Details of the Researcher

PHOTO

Koichi Hashimoto
Section
Graduate School of Information Sciences
Job title
Professor
Degree
  • 工学博士(大阪大学)

Research History 5

  • 2004/04 - Present
    東北大学大学院情報科学研究科教授

  • 2000/10 - 2004/03
    東京大学大学院情報理工学系研究科助教授

  • 1997/04 - 2000/09
    岡山大学工学部助教授

  • 1994/04 - 1997/03
    岡山大学工学部講師

  • 1990/04 - 1994/03
    大阪大学工学部助手

Education 3

  • Osaka University Graduate School, Division of Engineering Department of Industrial Mechanics

    1987/04 - 1990/03

  • 大阪大学大学院 工学研究科 電子制御機械工学専攻

    1985/04 - 1987/03

  • Osaka University Faculty of Engineering Science Department of Control Engineering

    1981/04 - 1985/03

Committee Memberships 18

  • The Japan Society of Mechanical Engineers Fellow

    2023/02 - Present

  • IEEE Senior Member

    2020/08 - Present

  • 日本ロボット学会 フェロー

    2019 - Present

  • 計測自動制御学会 フェロー

    2014/08 - Present

  • Int. Conf. Robotics and Automation Program Committee Member

    2004/04 - Present

  • Int. Conf. Intelligent Robots and Systems Program Committee Member

    1999/04 - Present

  • 日本ロボット学会 副会長

    2021/01 - 2022/12

  • 日本ロボット学会 理事

    2015/04 - 2017/04

  • 計測自動制御学会 理事

    2012/04 - 2014/03

  • システム制御情報学会 評議員

    2011/04 - 2012/03

  • 計測自動制御学会 東北支部長

    2010/04 - 2012/03

  • 日本機械学会 ロボティクスメカトロニクス部門技術委員会委員長

    2010/04 - 2011/03

  • 計測自動制御学会 SI部門講演会実行委員長

    2010/01 - 2010/12

  • 日本ロボット学会 評議員

    2007/04 - 2009/03

  • システム制御情報学会 評議員

    2004/04 - 2008/03

  • 日本ロボット学会 理事

    2005/04 - 2007/03

  • 特許庁 弁理士試験委員

    2002/04 - 2007/03

  • 日本ロボット学会 評議員

    2004/04 - 2005/03

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Professional Memberships 8

  • 映像情報メディア学会

  • 人工知能学会

  • Information Processing Society Japan

  • Institute of Systems, Control and Information Engineers

  • Japanese Society of Mechanical Engineering

  • Society of Instrument and Control Engineers

  • Robotics Society in Japan

  • IEEE (Institute of Electrical and Electronics Engineers)

︎Show all ︎Show first 5

Research Interests 4

  • Microscope Systems

  • Bio-Navigation

  • Robotics

  • Visual Servo

Research Areas 5

  • Informatics / Intelligent robotics /

  • Informatics / Intelligent informatics /

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Control and systems engineering /

  • Informatics / Mechanics and mechatronics /

  • Informatics / Robotics and intelligent systems /

Awards 22

  1. Advanced Engineering Award

    2022/06 The Japan Society of Polymer Processing

  2. Best Paper Award

    2021/09 Society of Instrument and Control Engineers 3D Measurement Based on Row-wise LT Matrix Estimation

  3. 学術業績賞

    2021/06 日本機械学会 ロボティクス・メカトロニクス部門

  4. The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Research Category

    2021/04

  5. InteractiveStickies: Innovative Technologies 2020 Special Prize - Expression

    2020/12

  6. Best Paper Finalist

    2019/12 IEEE ROBIO Bin-Picking of Randomly Piled Shiny Industrial Objects Using Light Transport Matrix Estimation

  7. Best Paper Finalist

    2019/12 IEEE ROBIO Fast ADMM l1 Minimization by Applying SMW Formula and Multi-Row Simultaneous Estimation for Light Transport Matrix Acquisition

  8. Certificate of commendation

    2018/12 FA Foundation 3D Measurement with High Accuracy and Robust Estimation for Bin Picking

  9. Best Journal Paper Award

    2018/09 Robotics Society Japan 3D Measurement with High Accuracy and Robust Estimation for Bin Picking

  10. Best Poster Presentation Award, ast Light Transport Matrix Estimation for 3D Shape Acquisition

    2018/02

  11. Best Poster Presentation Award, Generating Mesh-base Shape from Learned Latent Spaces of Point Clouds with VAE-GAN

    2018/02 GPDS Kick-off Symposium

  12. 優秀講演賞、形状モデルを用いないばら積みシーンの物体検出

    2017/12 計測自動制御学会システムインテグレーション部会

  13. 優秀講演賞、LT行列の推定に基づく三次元計測法

    2017/12 計測自動制御学会システムインテグレーション部会

  14. 優秀講演賞、高速ディスプレイ映像に隠蔽されたマーカを用いるモバイルARシステム

    2017/12 計測自動制御学会システムインテグレーション部門

  15. ベストデモ賞

    2017/09 日本情報処理学会エンタテインメントコンピューティング2017 高速プロジェクタによる投影コンテンツとの動的インタラクション

  16. 画像の認識・理解シンポジウムフロンティア論文賞

    2010/08 画像の認識・理解シンポジウム実行委員会

  17. Frontier Paper Award

    2010/05 MIRU2010 Time Augmented Reality System by Local Adaptive Sampling of Video Stream

  18. システム制御情報学会論文賞

    2010/04 システム制御情報学会

  19. 2006 Best Paper Award, IEEE Int. Conf. Robotics and Bio-Mimetics

    2006/12 IEEE

  20. 2005 Best Application Paper Award, Int. Conf. Mechatronics and Information Technology

    2005/09 IEEE

  21. IEEE ICRA Best Vision Paper Finalist

    2004/04 IEEE

  22. 日本ロボット学会研究奨励賞

    1994/09 日本ロボット学会

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Papers 360

  1. Chaotic map-coded metaheuristics for metameric variable-length problems

    Haichuan Yang, Haotian Li, Yifei Yang, Naoya Chiba, Shingo Kagami, Koichi Hashimoto, Yuichi Nagata

    Genetic Programming and Evolvable Machines 26 (2) 2025/06/04

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1007/s10710-025-09517-6  

    ISSN: 1389-2576

    eISSN: 1573-7632

  2. Product Engagement Detection Using Multi-Camera 3D Skeleton Reconstruction and Gaze Estimation Peer-reviewed

    Matus Tanonwong, Yu Zhu, Naoya Chiba, Koichi Hashimoto

    Sensors 25 (10) 3031-3031 2025/05/11

    Publisher: MDPI AG

    DOI: 10.3390/s25103031  

    eISSN: 1424-8220

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    Product engagement detection in retail environments is critical for understanding customer preferences through nonverbal cues such as gaze and hand movements. This study presents a system leveraging a 360-degree top-view fisheye camera combined with two perspective cameras, the only sensors required for deployment, effectively capturing subtle interactions even under occlusion or distant camera setups. Unlike conventional image-based gaze estimation methods that are sensitive to background variations and require capturing a person’s full appearance, raising privacy concerns, our approach utilizes a novel Transformer-based encoder operating directly on 3D skeletal keypoints. This innovation significantly reduces privacy risks by avoiding personal appearance data and benefits from ongoing advancements in accurate skeleton estimation techniques. Experimental evaluation in a simulated retail environment demonstrates that our method effectively identifies critical gaze-object and hand-object interactions, reliably detecting customer engagement prior to product selection. Despite yielding slightly higher mean angular errors in gaze estimation compared to a recent image-based method, the Transformer-based model achieves comparable performance in gaze-object detection. Its robustness, generalizability, and inherent privacy preservation make it particularly suitable for deployment in practical retail scenarios such as convenience stores, supermarkets, and shopping malls, highlighting its superiority in real-world applicability.

  3. A Self-Attention Multi-Task Learning Model for Garment Segmentation and Parts Recognition.

    Yilin Zhang, Alberto Petrilli, Naoya Chiba, Koichi Hashimoto

    SII 1185-1192 2025

    DOI: 10.1109/SII59315.2025.10870984  

  4. Accurate Estimation of Fiducial Marker Positions Using Motion Capture System.

    Matus Tanonwong, Naoya Chiba, Koichi Hashimoto

    SII 625-632 2025

    DOI: 10.1109/SII59315.2025.10870922  

  5. RPD-SLAM: Real-time Semantic SLAM for Partially Dense Mapping with Road-Sign Understanding in Dynamic Outdoor Environments

    Yu Zhu, Naoya Chiba, Koichi Hashimoto

    2024 IEEE International Conference on Robotics and Biomimetics (ROBIO) 2111-2118 2024/12/10

    Publisher: IEEE

    DOI: 10.1109/robio64047.2024.10907651  

  6. Garment Recognition and Reconstruction Using Object Simultaneous Localization and Mapping International-journal

    Yilin Zhang, Koichi Hashimoto

    Sensors 24 (23) 2024/11

    DOI: 10.3390/s24237622  

    eISSN: 1424-8220

  7. Automated escape system: identifying prey's kinematic and behavioral features critical for predator evasion. International-journal

    Nozomi Sunami, Hibiki Kimura, Hidechika Ito, Koichi Hashimoto, Yuta Sato, Soki Tachibana, Mikiya Hidaka, Kouki Miyama, Hirofumi Watanabe, Yuuki Kawabata

    The Journal of experimental biology 227 (10) 2024/05/15

    DOI: 10.1242/jeb.246772  

    ISSN: 0022-0949

    eISSN: 1477-9145

  8. Hole detection for industrial parts using inverse problem of persistent homology

    CHIBA Naoya, YANG Haichuan, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2024 1P2-R03 2024

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2024.1p2-r03  

    eISSN: 2424-3124

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    Persistent homology, which captures topological features of point clouds and has been used successfully in the field of topology in mathematics. This approach can extract shape features robustly by low-dimensional (i.e., 3D in this paper context) points. We applied this technique to 3D point cloud processing in robot vision. Persistent homology captures holes in point cloud as pairs of birth time and death time of changing radius of point distance. By selecting these pairs by criteria based on the focusing hole parameter, corresponding hole can be detected. In this paper, we demonstrate that a method called inverse analysis of persistent homology can be used to robustly detect holes in industrial parts.

  9. Chaotic Map-Coded Evolutionary Algorithms for Dendritic Neuron Model Optimization

    Haichuan Yang, Yifei Yang, Yuxin Zhang, Cheng Tang, Koichi Hashimoto, Yuichi Nagata

    2024 IEEE Congress on Evolutionary Computation, CEC 2024 - Proceedings 1-8 2024

    Publisher: IEEE

    DOI: 10.1109/CEC60901.2024.10612087  

  10. Comparative Study of Hybridization and Parameter Tuning Improvement Methods for EAs in WFLOP

    Ziqing Ye, Haichuan Yang, Naoya Chiba, Koichi Hashimoto

    ACM International Conference Proceeding Series 59-65 2023/11/25

    Publisher: ACM

    DOI: 10.1145/3638209.3638219  

  11. Multi-Objective Deep Reinforcement Learning for Crowd Route Guidance Optimization Peer-reviewed

    Ryo Nishida, Yuki Tanigaki, Masaki Onishi, Koichi Hashimoto

    Transportation Research Record: Journal of the Transportation Research Board 2678 (5) 617-633 2023/08/17

    Publisher: SAGE Publications

    DOI: 10.1177/03611981231190635  

    ISSN: 0361-1981

    eISSN: 2169-4052

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    In this study, we propose an improved version of Pareto deep Q-network (PDQN), a multi-objective deep reinforcement learning method, and attempt to demonstrate its effectiveness in a real-world problem such as crowd route guidance strategy optimization. Overcrowding during crowd movement can sometimes lead to accidents; therefore, it is imperative to guide crowds to move safely and efficiently. Safety and efficiency are conflicting objectives, and how to dynamically determine guidance can be formulated as a multi-objective sequential decision-making problem. PDQN is suitable for solving these problems, but its applicability to complex real-world problems has not been fully verified. To apply PDQN to real problems, we propose to adjust the parameters of PDQN and improve the action selection criteria during learning. A toy problem and a crowd guidance problem using multi-agent crowd simulation are adopted to evaluate the performance of improved PDQN. Experimental results show that the improved PDQN can search for good strategies compared with the original PDQN and can obtain better strategies than simplified strategies.

  12. Multi-Objective Deep Reinforcement Learning for Crowd Route Guidance Optimization Peer-reviewed

    Ryo Nishida, Yuki Tanigaki, Masaki Onishi, Koichi Hashimoto

    Transportation Research Record: Journal of the Transportation Research Board 2678 (5) 617-633 2023/08/17

    Publisher: SAGE Publications

    DOI: 10.1177/03611981231190635  

    ISSN: 0361-1981

    eISSN: 2169-4052

  13. Homography Estimation Using Marker Projection Control: A Case of Calibration-Free Projection Mapping

    Shingo Kagami, Koichi Hashimoto

    IFAC-PapersOnLine 56 (2) 2951-2956 2023/07/01

    DOI: 10.1016/j.ifacol.2023.10.1418  

    eISSN: 2405-8963

  14. Crowd simulation incorporating a route choice model and similarity evaluation using real large-scale data.

    Ryo Nishida, Masaki Onishi, Koichi Hashimoto

    CoRR abs/2302.10421 2023

    DOI: 10.48550/arXiv.2302.10421  

  15. Crowd Simulation Incorporating a Route Choice Model and Similarity Evaluation using Real Large-scale Data

    Ryo Nishida, Masaki Onishi, Koichi Hashimoto

    Proceedings of the International Joint Conference on Autonomous Agents and Multiagent Systems, AAMAS 2023-May 2751-2753 2023

    Publisher: ACM

    DOI: 10.48550/arXiv.2302.10421  

    ISSN: 1548-8403

    eISSN: 1558-2914

  16. Recognition of Human Relationships Using Interactions and Gazes through Video Analysis in Surveillance Footage

    Matus Tanonwong, Naoya Chiba, Koichi Hashimoto

    2023 IEEE International Conference on Robotics and Biomimetics, ROBIO 2023 1-7 2023

    Publisher: IEEE

    DOI: 10.1109/ROBIO58561.2023.10354720  

  17. Evaluation of Perceptual Difference in Dynamic Projection Mapping with and without Movement of the Target Surface

    Shunya Fukuda, Shingo Kagami, Koichi Hashimoto

    Journal of Robotics and Mechatronics 34 (5) 1141-1151 2022/10

    DOI: 10.20965/jrm.2022.p1141  

    ISSN: 0915-3942

    eISSN: 1883-8049

  18. Simulation Analysis on Benefits of Introducing Meeting Points Into On-Demand Shared Mobility Services.

    Ryo Nishida, Ryo Kanamori, Masaki Onishi, Itsuki Noda, Koichi Hashimoto

    IEEE Access 10 124114-124129 2022

    DOI: 10.1109/ACCESS.2022.3224728  

    eISSN: 2169-3536

  19. Sample-Efficient Multimodal Dynamics Modeling for Risk-Sensitive Reinforcement Learning.

    Ryota Yashima, Akihiko Yamaguchi, Koichi Hashimoto

    ICMRE 21-27 2022

    Publisher: IEEE

    DOI: 10.1109/ICMRE54455.2022.9734091  

  20. Simultaneous recording of behavioral and neural responses of free-moving nematodes C. elegans

    Hirofumi Sato, Hirofumi Kunitomo, Xianfeng Fei, Koichi Hashimoto, Yuichi Iino

    STAR Protocols 2 (4) 2021/12/17

    DOI: 10.1016/j.xpro.2021.101011  

    eISSN: 2666-1667

  21. Glutamate signaling from a single sensory neuron mediates experience-dependent bidirectional behavior in Caenorhabditis elegans. International-journal

    Hirofumi Sato, Hirofumi Kunitomo, Xianfeng Fei, Koichi Hashimoto, Yuichi Iino

    Cell reports 35 (8) 109177-109177 2021/05/25

    DOI: 10.1016/j.celrep.2021.109177  

    eISSN: 2211-1247

  22. Vibration Control for Pivoting by Robot Hand Equipped with CAVS and FingerVision

    Yoshiyuki Suzuki, Akihiko Yamaguchi, Seita Nojiri, Tetsuyou Watanabe, Koichi Hashimoto

    Proceedings - 2021 5th IEEE International Conference on Robotic Computing, IRC 2021 18-26 2021

    DOI: 10.1109/IRC52146.2021.00010  

  23. MetamorHockey: A Projection-based Virtual Air Hockey Platform Featuring Transformable Mallet Shapes.

    Shun Ueda, Shingo Kagami, Koichi Hashimoto

    Special Interest Group on Computer Graphics and Interactive Techniques Conference Emerging Technologies, SIGGRAPH 2021 7-4 2021

    Publisher: ACM

    DOI: 10.1145/3450550.3465341  

  24. Vision-Based Finger Tapping Detection Without Fingertip Observation.

    Shotaro Narita, Shingo Kagami, Koichi Hashimoto

    J. Robotics Mechatronics 33 (3) 484-493 2021

    DOI: 10.20965/jrm.2021.p0484  

    ISSN: 0915-3942

    eISSN: 1883-8049

  25. Special Issue on Bio-Logging and Robotics.

    Koichi Osuka, Koichi Hashimoto, Midori Sakura, Shizuko Hiryu

    J. Robotics Mechatronics 33 (3) 445-445 2021

    DOI: 10.20965/jrm.2021.p0445  

    ISSN: 0915-3942

    eISSN: 1883-8049

  26. Interactive Stickies: Low-latency projection mapping for dynamic interaction with projected images on a movable surface

    Shingo Kagami, Koichi Hashimoto

    ACM SIGGRAPH 2020 Emerging Technologies, SIGGRAPH 2020 16-2 2020/08/17

    Publisher: ACM

    DOI: 10.1145/3388534.3407291  

  27. Presynaptic MAST kinase controls opposing postsynaptic responses to convey stimulus valence in Caenorhabditis elegans Peer-reviewed

    Shunji Nakano, Muneki Ikeda, Yuki Tsukada, Xianfeng Fei, Takamasa Suzuki, Yusuke Niino, Rhea Ahluwalia, Ayana Sano, Rumi Kondo, Kunio Ihara, Atsushi Miyawaki, Koichi Hashimoto, Tetsuya Higashiyama, Ikue Mori

    Proceedings of the National Academy of Sciences of the United States of America 117 (3) 1638-1647 2020/01/21

    DOI: 10.1073/pnas.1909240117  

    ISSN: 0027-8424

    eISSN: 1091-6490

  28. Fast and Robust 3D Measurement by Light Transport Matrix Estimation

    CHIBA Naoya, ITO Hidechika, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2020 1P2-L10 2020

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2020.1p2-l10  

    eISSN: 2424-3124

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    3D Measurements for metallic objects or semi-transparent objects are required; however, they are still a hard problem in the robot vision field. We have developed a novel 3D measurement method that utilizes LTM sparse estimation and epipolar geometry constraint, which can measure these complex lighting objects accurately. In this presentation, we will show our results from the perspectives of computation cost and robustness. Na¨ıve LTM estimation takes a very long time; thus, we have developed computation cost and the number of projection and capturing reduction methods. We also developed a robust LTM sparse estimation method for non-linear projector-camera system behavior.

  29. Sparse estimation under saturated condition for 3D Measurement and its application for bin-picking robot

    Naoya Chiba, Koichi Hashimoto

    Seimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering 86 (1) 106-112 2020

    Publisher: The Japan Society for Precision Engineering

    DOI: 10.2493/jjspe.86.106  

    ISSN: 0912-0289

    eISSN: 1882-675X

  30. FAst Detection Algorithm for 3D Keypoints (FADA-3K). Peer-reviewed

    Shogo Arai, Nobuaki Fukuchi, Koichi Hashimoto

    IEEE Access 8 189556-189564 2020

    DOI: 10.1109/ACCESS.2020.3025534  

    ISSN: 2169-3536

    eISSN: 2169-3536

  31. Fast Prediction of a Worker's Reaching Motion Without a Skeleton Model (F-PREMO). Peer-reviewed

    Shogo Arai, Andreas Lennart Pettersson, Koichi Hashimoto

    IEEE Access 8 90340-90350 2020

    DOI: 10.1109/ACCESS.2020.2992068  

    ISSN: 2169-3536

    eISSN: 2169-3536

  32. Fast ADMM ℓ<inf>1</inf> minimization by applying SMW formula and multi-row simultaneous estimation for Light Transport Matrix acquisition Peer-reviewed

    Naoya Chiba, Akira Imakura, Koichi Hashimoto

    IEEE International Conference on Robotics and Biomimetics, ROBIO 2019 14-21 2019/12

    Publisher: IEEE

    DOI: 10.1109/ROBIO49542.2019.8961736  

  33. Disease-associated mutations hyperactivate KIF1A motility and anterograde axonal transport of synaptic vesicle precursors International-journal Peer-reviewed

    Kyoko Chiba, Hironori Takahashi, Min Chen, Hiroyuki Obinata, Shogo Arai, Koichi Hashimoto, Toshiyuki Oda, Richard J. McKenney, Shinsuke Niwa

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 116 (37) 18429-18434 2019/09

    DOI: 10.1073/pnas.1905690116  

    ISSN: 0027-8424

    eISSN: 1091-6490

  34. Animated Stickies: Fast Video Projection Mapping onto a Markerless Plane through a Direct Closed-Loop Alignment Peer-reviewed

    Shingo Kagami, Koichi Hashimoto

    IEEE TRANSACTIONS ON VISUALIZATION AND COMPUTER GRAPHICS 25 (11) 3094-3104 2019/08/30

    DOI: 10.1109/TVCG.2019.2932248  

    ISSN: 1077-2626

    eISSN: 1941-0506

  35. STEFTR: A Hybrid Versatile Method for State Estimation and Feature Extraction From the Trajectory of Animal Behavior International-journal Peer-reviewed

    Shuhei J. Yamazaki, Kazuya Ohara, Kentaro Ito, Nobuo Kokubun, Takuma Kitanishi, Daisuke Takaichi, Yasufumi Yamada, Yosuk Ikejiri, Fumie Hiramatsu, Kosuke Fujita, Yuki Tanimoto, Akiko Yamazoe-Umemoto, Koichi Hashimoto, Katsufumi Sato, Ken Yoda, Akinori Takahashi, Yuki Ishikawa, Azusa Kamikouchi, Shizuko Hiryu, Takuya Maekawa, Koutarou D. Kimura

    FRONTIERS IN NEUROSCIENCE 13 (JUN) 626-626 2019/06

    DOI: 10.3389/fnins.2019.00626  

    ISSN: 1662-453X

    eISSN: 1662-453X

  36. Context-based semantical vector representations for animal trajectories Peer-reviewed

    Ilya Ardakani, Koichi Hashimoto, Ken Yoda

    Advanced Robotics 33 (3-4) 118-133 2019/02/16

    DOI: 10.1080/01691864.2019.1573704  

    ISSN: 0169-1864

    eISSN: 1568-5535

  37. Point cloud deep learning for multiple object pose estimation

    TODA Yukihiro, CHIBA Naoya, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019 2P2-H06 2019

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2019.2p2-h06  

    eISSN: 2424-3124

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    6D pose estimation is an important task in the research field of robot vision. Pose estimation is used in picking task in industrial scene. the previous study shows that the pose estimation can be performed by deep learning if the scene is only a single object. In industrial applications, it is necessary to perform tasks in scenes multiple objects are placed in disorder. In multiple objects scene, each object must be identified from the scene, and pose estimation performed separately. In this paper we design a neural network that estimates multiple objects at the same time. Using an object clustering module, the network became possible to learn scenes of multiple objects.

  38. Development of Simulator for Object Pose Estimation by Using of Pointcloud Deep Learning

    CHIBA Naoya, TODA Yukihiro, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019 2P1-I03 2019

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2019.2p1-i03  

    eISSN: 2424-3124

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    3D object detection and pose estimation are an essential task for the bin-picking robot. We try to apply to solve 3D pose estimation task by using the pointcloud deep learning, which techniques are developing rapidly in computer vision. In this paper, we updated our 3D bin scene generation program we had developed for generating pointcloud deep learning dataset. We also propose a straightforward method which applies PointNet to estimate the 3D pose of a single object in the scene.

  39. 3D Measurement Based on Row-wise LT Matrix Estimation Peer-reviewed

    CHIBA Naoya, HASHIMOTO Koichi

    Transactions of the Society of Instrument and Control Engineers 55 (4) 294-304 2019

    Publisher: The Society of Instrument and Control Engineers

    DOI: 10.9746/sicetr.55.294  

    ISSN: 0453-4654

    eISSN: 1883-8189

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    3D Measurement is an essential element of robotics for industrial usage. Many methods have been proposed so far, but some objects with specular reflections or subsurface scatterings are difficult to measure the shape accurately. We have developed a new method by using projector-camera Light Transport (LT) Matrix. LT Matrix is often used in computer graphics to make relighting images, light path understanding, and 3D measurement. It is useful for describing light paths on projector-camera system because it includes all light reflection information. However, it takes a long time to measure LT Matrix accurately. This paper first proposes how to obtain 3D shape from LT Matrix. Then we propose fast LT Matrix estimation method by using its sparseness. Our method can estimate accurate LT Matrix to obtain 3D shape in short time. Finally, we compare our results and previous 3D measurement methods, and we conclude our methods performs much better than other methods for metallic or transparent objects.

  40. Anomaly detection of the injection molding clamping unit Peer-reviewed

    NAGANUMA Tsuneo, HASHIMOTO Koichi

    Transactions of the JSME (in Japanese) 85 (871) 18-00258-18-00258 2019

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/transjsme.18-00258  

    eISSN: 2187-9761

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    <p>Our previous research (Naganuma, Hashimoto, 2018) demonstrates that the anomaly detection in the injection molding clamping unit will be made possible by evaluating the operating mode. Based on our previous research, this article suggests the sign of failure in the injection molding clamping unit can detected the anomaly detection through the unusual values of the production machine. A plastic injection molding manufacturing company built a data network system that collects a machine state log in the factory and saves data in the server. Over the past two years, two failures of clamping unit in the injection molding machine occurred under the production and the machine data of both cases are logged . We use a threshold method to detect the anomaly of the clamping unit. This thresholding is obtained by the maximum accuracy of the confusion matrix. It was tested against the two failure cases, which number of data is about 1.8 million cycle data. As a result, we discovered that this threshold method can detect the anomaly for both cases before the machine has to be shut down by the failure. Thus, it is expected to be useful for the preventive maintenance and the quality assurance of products due to its ability to detect the sign of failure in the injection molding machine.</p>

  41. Tracking fluorescent protein transgenic cells using a robot microscope Peer-reviewed

    Toshiki Nozawa, Koichi Hashimoto

    2019 IEEE INTERNATIONAL CONFERENCE ON PERVASIVE COMPUTING AND COMMUNICATIONS WORKSHOPS (PERCOM WORKSHOPS) 771-776 2019

    DOI: 10.1109/PERCOMW.2019.8730568  

    ISSN: 2474-2503

  42. Bin-picking of Randomly Piled Shiny Industrial Objects Using Light Transport Matrix Estimation. Peer-reviewed

    Naoya Chiba, Mingyu Li, Akira Imakura, Koichi Hashimoto

    IEEE International Conference on Robotics and Biomimetics, ROBIO 2019 7-13 2019

    Publisher: IEEE

    DOI: 10.1109/ROBIO49542.2019.8961622  

  43. Discriminative Recognition of Point Cloud Gesture Classes through One-Shot Learning. Peer-reviewed

    Joshua Owoyemi, Naoya Chiba, Koichi Hashimoto

    IEEE International Conference on Robotics and Biomimetics, ROBIO 2019 2304-2309 2019

    Publisher: IEEE

    DOI: 10.1109/ROBIO49542.2019.8961778  

  44. Preface: special issue on systems science of bio-navigation Peer-reviewed

    Koichi Hashimoto, Yuichi Tsumaki, Takuya Maekawa, Shizuko Hiryu

    ADVANCED ROBOTICS 33 (3-4) 107-107 2019

    DOI: 10.1080/01691864.2019.1575544  

    ISSN: 0169-1864

    eISSN: 1568-5535

  45. Construction of A Route Choice Model for Application to A Pedestrian Flow Simulation Peer-reviewed

    Ryo Nishida, Masaki Onishi, Koichi Hashimoto

    2019 IEEE INTERNATIONAL CONFERENCE ON PERVASIVE COMPUTING AND COMMUNICATIONS WORKSHOPS (PERCOM WORKSHOPS) 614-619 2019

    DOI: 10.1109/PERCOMW.2019.8730657  

    ISSN: 2474-2503

  46. Puppeteered rain: interactive illusion of levitating water drops by position-dependent strobe projection. Peer-reviewed

    Shingo Kagami, Kotone Higuchi, Koichi Hashimoto

    ACM SIGGRAPH 2019 Posters, SIGGRAPH 2019 48-2 2019

    Publisher: ACM

    DOI: 10.1145/3306214.3338603  

  47. Quantification of Aggregation and Associated Brain Areas in Drosophila melanogaster Peer-reviewed

    Takuto Okuno, Koichi Hashimoto, Hiromu Tanimoto

    2019 IEEE INTERNATIONAL CONFERENCE ON PERVASIVE COMPUTING AND COMMUNICATIONS WORKSHOPS (PERCOM WORKSHOPS) 759-764 2019

    DOI: 10.1109/PERCOMW.2019.8730594  

    ISSN: 2474-2503

  48. Perception of Motion-Adaptive Color Images Displayed by a High-Speed DMD Projector Peer-reviewed

    Wakana Oshiro, Shingo Kagami, Koichi Hashimoto

    2019 26TH IEEE CONFERENCE ON VIRTUAL REALITY AND 3D USER INTERFACES (VR) 1790-1793 2019

    DOI: 10.1109/VR.2019.8797850  

  49. Point attention network for gesture recognition using point cloud data Peer-reviewed

    Cherdsak Kingkan, Joshua Owoyemi, Koichi Hashimoto

    British Machine Vision Conference 2018, BMVC 2018 2019

  50. Sparse estimation of light transport matrix under saturated condition Peer-reviewed

    Naoya Chiba, Koichi Hashimoto

    British Machine Vision Conference 2018, BMVC 2018 2019

  51. Spatiotemporal Learning of Dynamic Gestures from 3D Point Cloud Data Peer-reviewed

    Joshua Owoyemi, Koichi Hashimoto

    CoRR abs/1804.08859 2018/04/24

    More details Close

    In this paper, we demonstrate an end-to-end spatiotemporal gesture learning approach for 3D point cloud data using a new gestures dataset of point clouds acquired from a 3D sensor. Nine classes of gestures were learned from gestures sample data. We mapped point cloud data into dense occupancy grids, then time steps of the occupancy grids are used as inputs into a 3D convolutional neural network which learns the spatiotemporal features in the data without explicit modeling of gesture dynamics. We also introduced a 3D region of interest jittering approach for point cloud data augmentation. This resulted in an increased classification accuracy of up to 10% when the augmented data is added to the original training data. The developed model is able to classify gestures from the dataset with 84.44% accuracy. We propose that point cloud data will be a more viable data type for scene understanding and motion recognition, as 3D sensors become ubiquitous in years to come.

  52. Accurate Object Pose Estimation Using Depth Only Peer-reviewed

    Mingyu Li, Koichi Hashimoto

    SENSORS 18 (4) 1045-1045 2018/04

    DOI: 10.3390/s18041045  

    ISSN: 1424-8220

    eISSN: 1424-8220

  53. Object Detection in Bin Scene without CAD Model Peer-reviewed

    Fukuchi Nobuaki, Chiba Naoya, Hashimoto Koichi

    Journal of the Robotics Society of Japan 36 (5) 368-375 2018

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.36.368  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    Bin picking robot plays an important role in automated manufacturing in industries. One of the most important techniques of bin picking robot is object detection or pose estimation in bin scene, and recently various methods reported good performance. Some industrial parts have its 3D CAD model that can represent whole shape of those parts; hence these methods are based on comparing the model of target object with the scene measured by camera or 3D sensors. However, almost all foods handled at factory do not have fixed shape against the recent demand of automating pick and place task. Therefore model-based techniques cannot be applied. In this paper, we propose a method of object detection without its 3D CAD model by utilizing target surface area information and concavity of boundaries between respective individuals. We evaluate proposed method against some foods and show the effectiveness of the method.

  54. Development of Calibration Tool for Projector-Camera System Considering Saturation And Gamma Correction

    CHIBA Naoya, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 2A1-M13 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2018.2a1-m13   10.1109/robio49542.2019.8961736_references_DOI_IJAxo4C8ZDdo5Nazc6pfGb97yKF   10.1109/robio49542.2019.8961622_references_DOI_IJAxo4C8ZDdo5Nazc6pfGb97yKF  

    eISSN: 2424-3124

    More details Close

    Active stereo vision is a 3D measurement method which uses a projector-camera system. These almost methods require linearity between a projector intensity value and camera intensity value. However, the relationship of the intensities is not linear in practice because of projector gamma and saturation on the camera pixel. Therefore, we have to calibrate it to be linear before 3D measurements. We developed a program which calibrates the relationship on a projector-camera system. In this paper, we examined our proposed method by applying to two 3D measurement methods: Phase Shift and LT Matrix Estimation. Both of them requires linearity between a projector intensity value and camera intensity value, and they perform better with proposed method than without optical calibration.

  55. Robotic Microscope System for Studying the Basic Principles of Brain Function Peer-reviewed

    Koutarou D. Kimura, Koichi Hashimoto

    2018 INTERNATIONAL SYMPOSIUM ON MICRO-NANOMECHATRONICS AND HUMAN SCIENCE (MHS) 2018

    DOI: 10.1109/MHS.2018.8886997  

    ISSN: 2474-378X

    eISSN: 2474-3798

  56. Estimation of operation mode from the clamping force variation of injection molding machine (Application of big data from the injection molding machine under a production) Peer-reviewed

    NAGANUMA Tsuneo, HASHIMOTO Koichi

    Transactions of the JSME (in Japanese) 84 (857) 17-00417-17-00417 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/transjsme.17-00417  

    ISSN: 2187-9761

    eISSN: 2187-9761

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    <p>This article suggests the machine operation mode can be estimated from sensors attached to the machine in the production line. An injection molding machine (IMM), which is widely operated in the plastics industry, was used in this research within an actual production line. Four strain sensors were attached to the IMM to measure the clamping force in each production cycle. Auto or semi-auto mode was estimated from the clamping force sequence. Auto mode is continuous production by the machine itself, while semi-auto mode involves intermittent human operation and includes such functions as machine start, machine finish, and trouble shooting. Approximately 340000 cycle data were obtained in 10-week production. The changing value was calculated by the binomial filter statistical technique, as well as the differencing of time series data from the clamping force in each cycle. And the relationship between changing value and operation mode is evaluated by the area under the curve (AUC) calculated from the receiver operating characteristic curve (ROC curve). As a result, we obtained that AUC value was 0.86 from 10-week production data, which means operation mode can be estimated from the changing value of clamping force in a high level. This estimating method has a low computational cost; therefore it is easy to install on a machine's board control system. We expect that this method will be used to detect the defective product, the machine malfunction or the mold failure.</p>

  57. Fast and Robust Pose Estimation Algorithm for Bin Picking Using Point Pair Feature Peer-reviewed

    Mingyu Li, Koichi Hashimoto

    2018 24TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION (ICPR) 2018-August 1604-1609 2018

    DOI: 10.1109/ICPR.2018.8545432  

    ISSN: 1051-4651

  58. Generating Mesh-based Shapes From Learned Latent Spaces of Point Clouds with VAE-GAN Peer-reviewed

    Cherdsak Kingkan, Koichi Hashimoto

    2018 24TH INTERNATIONAL CONFERENCE ON PATTERN RECOGNITION (ICPR) 308-313 2018

    DOI: 10.1109/ICPR.2018.8546232  

    ISSN: 1051-4651

  59. A Full-Color Single-Chip-DLP Projector with an Embedded 2400-fps Homography Warping Engine Peer-reviewed

    Shingo Kagami, Koichi Hashimoto

    SIGGRAPH'18: ACM SIGGRAPH 2018 EMERGING TECHNOLOGIES 1:1-1:2 2018

    DOI: 10.1145/3214907.3214927  

  60. Multiple Destinations Pedestrian Model using an Improved Social Force Model. Peer-reviewed

    Ryo Nishida, Masaki Onishi, Koichi Hashimoto

    Proceedings of the Tenth International Workshop on Agents in Traffic and Transportation (ATT 2018) co-located with with the Federated Artificial Intelligence Meeting, including ECAI/IJCAI, AAMAS and ICML 2018 conferences (FAIM 2018), Stockholm, Sweden, Ju 24-30 2018

    Publisher: CEUR-WS.org

  61. Spatiotemporal Learning of Dynamic Gestures from 3D Point Cloud Data. Peer-reviewed

    Joshua Owoyemi, Koichi Hashimoto

    2018 IEEE International Conference on Robotics and Automation, ICRA 2018, Brisbane, Australia, May 21-25, 2018 abs/1804.08859 1-5 2018

    Publisher: IEEE

    DOI: 10.1109/ICRA.2018.8460910  

  62. Ultra-Fast Multi-Scale Shape Estimation of Light Transport Matrix for Complex Light Reflection Objects Peer-reviewed

    Naoya Chiba, Koichi Hashimoto

    2018 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA) 6147-6152 2018

    DOI: 10.1109/ICRA.2018.8460892  

    ISSN: 1050-4729

  63. Understanding Animal Behavior Using Their Trajectories A Case Study of Gender Specific Trajectory Trends Peer-reviewed

    Ilya Ardakani, Koichi Hashimoto, Ken Yoda

    DISTRIBUTED, AMBIENT AND PERVASIVE INTERACTIONS: TECHNOLOGIES AND CONTEXTS, DAPI 2018, PT II 10922 3-22 2018

    DOI: 10.1007/978-3-319-91131-1_1  

    ISSN: 0302-9743

    eISSN: 1611-3349

  64. Point Attention Network for Gesture Recognition Using Point Cloud Data. Peer-reviewed

    Cherdsak Kingkan, Joshua Owoyemi, Koichi Hashimoto

    British Machine Vision Conference 2018, BMVC 2018, Northumbria University, Newcastle, UK, September 3-6, 2018 118-118 2018

    Publisher: BMVA Press

  65. Sparse Estimation of Light Transport Matrix under Saturated Condition. Peer-reviewed

    Naoya Chiba, Koichi Hashimoto

    British Machine Vision Conference 2018, BMVC 2018, Northumbria University, Newcastle, UK, September 3-6, 2018 68-68 2018

    Publisher: BMVA Press

  66. Homogeneous light transport matrix estimation based 3D shape measurement Peer-reviewed

    Chiba, N., Hashimoto, K.

    International Journal of Mechatronics and Automation 6 (2-3) 63-70 2018

    DOI: 10.1504/IJMA.2018.094476  

  67. Vision System for Coarsely Estimating Motion Parameters for Unknown Fast Moving Objects in Space Peer-reviewed

    Min Chen, Koichi Hashimoto

    SENSORS 17 (12) 2820 2017/12

    DOI: 10.3390/s17122820  

    ISSN: 1424-8220

    eISSN: 1424-8220

  68. Lightning Markers: Synchronization-free Single-shot Detection of Imperceptible AR Markers Embedded in a High-Speed Video Display Peer-reviewed

    Tsutomu Kusanagi, Shingo Kagami, Koichi Hashimoto

    Adjunct Proceedings of the 2017 IEEE International Symposium on Mixed and Augmented Reality, ISMAR-Adjunct 2017 229-234 2017/10/27

    DOI: 10.1109/ISMAR-Adjunct.2017.75  

  69. Curve Set Feature-Based Robust and Fast Pose Estimation Algorithm Peer-reviewed

    Mingyu Li, Koichi Hashimoto

    SENSORS 17 (8) 1782 2017/08

    DOI: 10.3390/s17081782  

    ISSN: 1424-8220

  70. A new platform for long-term tracking and recording of neural activity and simultaneous optogenetic control in freely behaving Caenorhabditis elegans Peer-reviewed

    Keiko Gengyo-Ando, Yuko Kagawa-Nagamura, Masamichi Ohkura, Xianfeng Fei, Min Chen, Koichi Hashimoto, Junichi Nakai

    JOURNAL OF NEUROSCIENCE METHODS 286 56-68 2017/07

    DOI: 10.1016/j.jneumeth.2017.05.017  

    ISSN: 0165-0270

    eISSN: 1872-678X

  71. Calcium dynamics regulating the timing of decision-making in C. elegans Peer-reviewed

    Yuki Tanimoto, Akiko Yamazoe-Umemoto, Kosuke Fujita, Yuya Kawazoe, Yosuke Miyanishi, Shuhei J. Yamazaki, Xianfeng Fei, Karl Emanuel Busch, Keiko Gengyo-Ando, Junichi Nakai, Yuichi Lino, Yuishi Iwasaki, Koichi Hashimoto, Koutarou D. Kimura

    ELIFE 6 2017/05

    DOI: 10.7554/eLife.21629  

    ISSN: 2050-084X

  72. Estimation of a large relative rotation between two images of a fast spinning marker-less golf ball Peer-reviewed

    Yuta Imai, Shingo Kagami, Koichi Hashimoto

    SII 2016 - 2016 IEEE/SICE International Symposium on System Integration 556-561 2017/02/06

    Publisher: Institute of Electrical and Electronics Engineers Inc.

    DOI: 10.1109/SII.2016.7844057  

  73. Development of program for generating pointcloud of bin scene using physical simulation and perspective camera model

    CHIBA Naoya, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 2A2-O09 2017

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2017.2a2-o09  

    eISSN: 2424-3124

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    Bin picking is an important task in industrial applications of robots. To achieve the bin picking task, approaches using 3D pointcloud have been taken. For bin picking, it is necessary to recognize picking targets from the scene pointcloud and to estimate the position and the orientation of each target. We developed a program for generating pointcloud of bin scene. This program can be used for development and verification of position and orientation estimation algorithm. By using physical simulation and simulation of stereo vision system using perspective projection model, we have achieved generating 3D pointclouds similar to that obtained by actual 3D sensors.

  74. 3D Pose Estimation Algorithm of Multiple Same Objects Detection Using Point Pair Feature

    Li Mingyu, Arai Shogo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 2A2-N08 2017

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2017.2A2-N08  

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    <p>This paper proposes a point pair feature (PPF) based pose estimation algorithm. Compared to the traditional PPF approach that searches among selected scene points, our approach is designed to search among all scene points. This is accomplished without increasing the computational time. We propose a pose verification method to improve the speed and recognition rate of the algorithm. We evaluated our approach against synthetic and real scenes. A high recognition rate and speed were demonstrated on 3 industrial objects, which are typically difficult to estimate using the PPF approach. The performance of our method was shown to be superior to traditional PPF approach in terms of recognition rate and speed.</p>

  75. Learning Human Motion Intention with 3D Convolutional Neural Network Peer-reviewed

    Joshua Owoyemi, Koichi Hashimoto

    2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION (ICMA) 1810-1815 2017

    DOI: 10.1109/ICMA.2017.8016092  

  76. 3D Measurement by Estimating Homogeneous Light Transport (HLT) Matrix Peer-reviewed

    Naoya Chiba, Koichi Hashimoto

    2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION (ICMA) 1763-1768 2017

    DOI: 10.1109/ICMA.2017.8016084  

  77. Encoding Bird's Trajectory using Recurrent Neural Networks Peer-reviewed

    Ilya S. Ardakani, Koichi Hashimoto

    2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION (ICMA) 1644-1649 2017

    DOI: 10.1109/ICMA.2017.8016063  

  78. Multiple Drosophila Tracking with Behavior Classification Peer-reviewed

    Pudith Sirigrivatanawong, Koichi Hashimoto

    2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION (ICMA) 1041-1046 2017

    DOI: 10.1109/ICMA.2017.8015960  

  79. Feedback Projection for 3D Measurements Under Complex Lighting Conditions Peer-reviewed

    Naoya Chiba, Shogo Arai, Koichi Hashimoto

    2017 AMERICAN CONTROL CONFERENCE (ACC) 4649-4656 2017

    DOI: 10.23919/ACC.2017.7963673  

    ISSN: 0743-1619

    eISSN: 2378-5861

  80. Multiple Drosophila Tracking System with Heading Direction Peer-reviewed

    Pudith Sirigrivatanawong, Shogo Arai, Vladimiros Thoma, Koichi Hashimoto

    SENSORS 17 (1) 96 2017/01

    DOI: 10.3390/s17010096  

    ISSN: 1424-8220

  81. Display tracking using blended images with unknown mixing ratio as a template Peer-reviewed

    Akifumi Goto, Shingo Kagami, Koichi Hashimoto

    SA 2016 - SIGGRAPH ASIA 2016 Technical Briefs 24 2016/11/28

    Publisher: Association for Computing Machinery, Inc

    DOI: 10.1145/3005358.3005381  

  82. Functional dissociation in sweet taste receptor neurons between and within taste organs of Drosophila Peer-reviewed

    Vladimiros Thoma, Stephan Knapek, Shogo Arai, Marion Hartl, Hiroshi Kohsaka, Pudith Sirigrivatanawong, Ayako Abe, Koichi Hashimoto, Hiromu Tanimoto

    CHEMICAL SENSES 41 (9) E171-E171 2016/11

    ISSN: 0379-864X

    eISSN: 1464-3553

  83. In actio optophysiological analyses reveal functional diversification of dopaminergic neurons in the nematode C-elegans Peer-reviewed

    Yuki Tanimoto, Ying Grace Zheng, Xianfeng Fei, Yukako Fujie, Koichi Hashimoto, Koutarou D. Kimura

    SCIENTIFIC REPORTS 6 2016/05

    DOI: 10.1038/srep26297  

    ISSN: 2045-2322

  84. Functional dissociation in sweet taste receptor neurons between and within taste organs of Drosophila Peer-reviewed

    Vladimiros Thoma, Stephan Knapek, Shogo Arai, Marion Hartl, Hiroshi Kohsaka, Pudith Sirigrivatanawong, Ayako Abe, Koichi Hashimoto, Hiromu Tanimoto

    NATURE COMMUNICATIONS 7 2016/02

    DOI: 10.1038/ncomms10678  

    ISSN: 2041-1723

  85. On special issue &ldquo;Selected Papers from the 33rd Annual Conference of the Rototics Society of Japan (RSJ2015)&rdquo;

    Hashimoto Koichi

    Journal of the Robotics Society of Japan 34 (7) 421-421 2016

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.34.421  

    ISSN: 0289-1824

    eISSN: 1884-7145

  86. ビンピッキングのための高精度三次元計測とロバスト推定

    荒井翔悟, 原田智紀, 藤平敦, 橋本浩一

    日本ロボット学会誌 34 (4) 261‐271(J‐STAGE)-271 2016

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.34.261  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    Robotic bin picking of small industrial parts with metallic luster is a challenging task. Especially, the bin picking for metallic bolts with high success rate is very challenging, since the metallic bolts are part of in nearly all industrial products. High accuracy 3D measurement for metallic bolts is difficult due to specular and diffuse reflection caused by a screw part of bolts. To achieve high success rate for bin picking of metallic bolts, we propose the following three approaches. First, we show that 4 steps phase shift can achieve three-order accuracy for 3D measurement by mathematical analysis and adopt it. Second, we propose a novel robust and fast posture estimation algorithm named SAC-LMI (Sample Consensus with Linear Matrix Inequality). The proposed algorithm SAC-LMI can compute posture of the metallic bolts with high accuracy by using 3D measured point cloud having many outliers. Finally, we adopt a simple 1-DOF handling device called RAPiD for robust bin picking against calibration error for camera-robot posture. Considering the three approaches shown above, we have developed a robotic bin picking system which provides 95% success rates in industrial bin picking.

  87. High-frame-rate Region-based Visual Tracking on CPU: An Implementation Perspective Peer-reviewed

    Shingo Kagami, Koichi Hashimoto

    2016 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII) 562-567 2016

    DOI: 10.1109/SII.2016.7844058  

    ISSN: 2474-2317

  88. Multiple Drosophila Tracking with Heading Direction in Crossover and Touching Scenarios Peer-reviewed

    Pudith Sirigrivatanawong, Koichi Hashimoto

    2016 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO) 1954-1959 2016

    DOI: 10.1109/ROBIO.2016.7866615  

  89. Model-Based Virtual Visual Servoing With Point Cloud Data Peer-reviewed

    Cherdsak Kingkan, Shogo Ito, Shogo Arai, Takashi Nammoto, Koichi Hashimoto

    2016 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2016) 5549-5555 2016

    DOI: 10.1109/IROS.2016.7759816  

  90. Alignment of a flexible sheet object with position-based and image-based visual servoing Peer-reviewed

    Shingo Kagami, Kotaro Omi, Koichi Hashimoto

    ADVANCED ROBOTICS 30 (15) 965-978 2016

    DOI: 10.1080/01691864.2016.1183518  

    ISSN: 0169-1864

    eISSN: 1568-5535

  91. Sticky projection mapping: 450-fps tracking projection onto a moving planar surface Peer-reviewed

    Shingo Kagami, Koichi Hashimoto

    SIGGRAPH Asia 2015 Emerging Technologies, SA 2015 26297-26297 2015/11/02

    Publisher: Association for Computing Machinery, Inc

    DOI: 10.1145/2818466.2818485  

  92. 1A1-H03 3D Keypoint Matching with High Accuracy

    ARAI Shogo, FUKUCHI Nobuaki, CHIBA Naoya, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2015 _1A1-H03_1-_1A1-H03_2 2015

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2015._1a1-h03_1  

    eISSN: 2424-3124

    More details Close

    3D registration is becoming one of the essential technologies for service and industrial robots. For 3D registration, 3D keypoint detection, feature computation on the detected keypoints, and correspondence between model and scene keypoints based on the features are required in most cases. In this research, we will propose high accuracy correspondence method to improve accuracy of 3D registration by using geometric relation among 3D keypoints. As the first step, this paper shows accuracy analysis of the correspondence that depends on 3D shape of a target object and methods to detect 3D keypoints and compute features on the detected keypoints.

  93. Multiple Drosophila Tracking and Posture Estimation Algorithm Peer-reviewed

    Shogo Arai, Pudith Sirigrivatanawong, Koichi Hashimoto

    2015 4TH INTERNATIONAL CONFERENCE ON INFORMATICS, ELECTRONICS & VISION ICIEV 15 2015

    DOI: 10.1109/ICIEV.2015.7334011  

  94. Photo Billboarding: A Simple Method to Provide Clues that Relate Camera Views and a 2D Map for Mobile Pedestrian Navigation Peer-reviewed

    Junta Watanabe, Shingo Kagami, Koichi Hashimoto

    2015 IEEE International Symposium on Mixed and Augmented Reality 210-211 2015

    DOI: 10.1109/ISMAR.2015.69  

  95. Hit-to-scroll: A scroll interface utilizing impacting motions for a handheld projector Peer-reviewed

    Keima Abe, Shingo Kagami, Koichi Hashimoto

    SIGGRAPH Asia 2014 Posters, SIGGRAPH ASIA 2014 16 2014/11/24

    Publisher: Association for Computing Machinery, Inc

    DOI: 10.1145/2668975.2669021  

  96. Camera synchronization to imperceptible frames embedded in a displayed video sequence Peer-reviewed

    Hidetaka Niidome, Shingo Kagami, Koichi Hashimoto

    SIGGRAPH Asia 2014 Posters, SIGGRAPH ASIA 2014 25 2014/11/24

    Publisher: Association for Computing Machinery, Inc

    DOI: 10.1145/2668975.2668997  

  97. Regulation of Experience-Dependent Bidirectional Chemotaxis by a Neural Circuit Switch in Caenorhabditis elegans Peer-reviewed

    Yohsuke Satoh, Hirofumi Sato, Hirofumi Kunitomo, Xianfeng Fei, Koichi Hashimoto, Yuichi Iino

    JOURNAL OF NEUROSCIENCE 34 (47) 15631-15637 2014/11

    DOI: 10.1523/JNEUROSCI.1757-14.2014  

    ISSN: 0270-6474

  98. Regulation of Experience-Dependent Bidirectional Chemotaxis by a Neural Circuit Switch in Caenorhabditis elegans Peer-reviewed

    Yohsuke Satoh, Hirofumi Sato, Hirofumi Kunitomo, Xianfeng Fei, Koichi Hashimoto, Yuichi Iino

    JOURNAL OF NEUROSCIENCE 34 (47) 15631-15637 2014/11

    DOI: 10.1523/JNEUROSCI.1757-14.2014  

    ISSN: 0270-6474

  99. A condition for better estimation using asynchronous sampling than synchronous sampling

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    2009 European Control Conference, ECC 2009 3719-3724 2014/03/26

  100. Control of Water Resource Monitoring Sensors with Flow Field Estimation for Low Energy Consumption Peer-reviewed

    Shogo Arai, Pudith Sirigrivatanawong, Koichi Hashimoto

    11TH IEEE INTERNATIONAL CONFERENCE ON CONTROL AND AUTOMATION (ICCA) 1037-1044 2014

    DOI: 10.1109/ICCA.2014.6871063  

    ISSN: 1948-3449

  101. ロックオントラッキング顕微鏡 Invited Peer-reviewed

    橋本浩一

    日本ロボット学会誌 32 (9) 784-788 2014

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.32.784  

    ISSN: 0289-1824

    eISSN: 1884-7145

  102. Principal component analysis of odor coding at the level of third-order olfactory neurons in Drosophila Peer-reviewed

    Makoto Hiroi, Masamichi Ohkura, Junichi Nakai, Naoki Masuda, Koichi Hashimoto, Kiichi Inoue, Andre Fiala, Tetsuya Tabata

    GENES TO CELLS 18 (12) 1070-1081 2013/12

    DOI: 10.1111/gtc.12094  

    ISSN: 1356-9597

    eISSN: 1365-2443

  103. Feedback regulation of microscopes by image processing Peer-reviewed

    Yuki Tsukada, Koichi Hashimoto

    DEVELOPMENT GROWTH & DIFFERENTIATION 55 (4) 550-562 2013/05

    DOI: 10.1111/dgd.12056  

    ISSN: 0012-1592

    eISSN: 1440-169X

  104. Frame Synchronization of High-Speed Vision Sensors with Respect to Temporally Encoded Illumination in Highly Dynamic Environments Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    SENSORS 13 (4) 4102-4121 2013/04

    DOI: 10.3390/s130404102  

    ISSN: 1424-8220

  105. Lake Monitoring Sensors Distribution with Low Energy Consumption Peer-reviewed

    Pudith Sirigrivatanawong, Shogo Arai, Koichi Hashimoto

    2013 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO) 2062-2069 2013

    DOI: 10.1109/ROBIO.2013.6739773  

  106. Model-based compliant motion control scheme for assembly tasks using vision and force information Peer-reviewed

    Takashi Nammoto, Kazuhiro Kosuge, Koichi Hashimoto

    IEEE International Conference on Automation Science and Engineering 948-953 2013

    Publisher: IEEE

    DOI: 10.1109/CoASE.2013.6653912  

    ISSN: 2161-8070 2161-8089

  107. High Speed/Accuracy Visual Servoing based on Virtual Visual Servoing with Stereo Cameras Peer-reviewed

    Takashi Nammoto, Koichi Hashimoto, Shingo Kagami, Kazuhiro Kosuge

    2013 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS) 44-49 2013

    DOI: 10.1109/IROS.2013.6696330  

    ISSN: 2153-0858

  108. Assembly of Gear Components with Monocular Eye-to-Hand Visual Servoing Peer-reviewed

    Kenji Matsunaga, Shingo Kagami, Koichi Hashimoto

    43rd International Symposium on Robotics / Proceedings 2012/08

  109. Marker-less 6-DoF Pose Estimation of Industrial Wire-Harness Components from Shapes in 2-D Images Peer-reviewed

    Masaru Morita, Shingo Kagami, Koichi Hashimoto, Kazuhiro Kosuge

    43rd International Symposium on Robotics / Proceedings 2012/08

  110. Efficient second-order minimization combined with fuzzy control-based visual tracking of a moving face Peer-reviewed

    Le Duc Hanh, Chyi-Yeu Lin, Chi-Ying Lin, Koichi Hashimoto

    PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART I-JOURNAL OF SYSTEMS AND CONTROL ENGINEERING 226 (I6) 852-862 2012/07

    DOI: 10.1177/0959651811430800  

    ISSN: 0959-6518

    eISSN: 2041-3041

  111. Special Issue on Visual Servoing Peer-reviewed

    Graziano Chesi, Koichi Hashimoto, Domenico Prattichizzo

    MECHATRONICS 22 (4) 369-369 2012/06

    DOI: 10.1016/j.mechatronics.2012.03.001  

    ISSN: 0957-4158

  112. GPU acceleration in a visual servo system

    Chuantao Zang, Koichi Hashimoto

    Journal of Robotics and Mechatronics 24 (1) 105-114 2012

    Publisher: Fuji Technology Press

    DOI: 10.20965/jrm.2012.p0105  

    ISSN: 1883-8049 0915-3942

  113. The application on tracking moving face by combining efficient second-order minimization and PD neural controller

    Hanh Duc Le, Chyi-Yeu Lin, Chi-Ying Lin, Koichi Hashimoto

    Advanced Science Letters 8 291-296 2012

    DOI: 10.1166/asl.2012.2387  

    ISSN: 1936-6612 1936-7317

  114. A flexible visual inspection system combining pose estimation and visual servo approaches Peer-reviewed

    Chuantao Zang, Koichi Hashimoto

    2012 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA) 1304-1309 2012

    DOI: 10.1109/ICRA.2012.6224912  

    ISSN: 1050-4729

    eISSN: 2577-087X

  115. Control performance comparison of asynchronous and synchronous sensor system in UAV applications Peer-reviewed

    Shogo Arai, Tong Ye, Koichi Hashimoto

    2012 IEEE International Conference on Mechatronics and Automation, ICMA 2012 359-365 2012

    DOI: 10.1109/ICMA.2012.6282870  

  116. A flexible camera positioning strategy for robot-based visual inspection applications Peer-reviewed

    Chuantao Zang, Koichi Hashimoto

    2012 IEEE International Conference on Mechatronics and Automation, ICMA 2012 527-532 2012

    DOI: 10.1109/ICMA.2012.6283163  

  117. Autonomous Flight Control of RC Helicopter With Wind Disturbance Peer-reviewed

    Yoshikazu Furusawa, Shogo Arai, Koichi Hashimoto

    2012 PROCEEDINGS OF SICE ANNUAL CONFERENCE (SICE) 2133-2138 2012

  118. Exploration of Brain Function through Behavior, Neural Activity Observation, and Optogenetic Manipulation Peer-reviewed

    Koichi Hashimoto, Xianfeng Fei

    2012 INTERNATIONAL SYMPOSIUM ON OPTOMECHATRONIC TECHNOLOGIES (ISOT) 2012

    DOI: 10.1109/ISOT.2012.6403223  

  119. 3D Object Pose Estimation from Binarized Images Peer-reviewed

    Shingo Kagami, Masaru Morita, Koichi Hashimoto

    2012 PROCEEDINGS OF SICE ANNUAL CONFERENCE (SICE) 759-761 2012

  120. Localization and Tracking of an Accelerometer in a Camera View based on Feature Point Motion Analysis Peer-reviewed

    Yuichi Maki, Shingo Kagami, Koichi Hashimoto

    2012 PROCEEDINGS OF SICE ANNUAL CONFERENCE (SICE) 293-294 2012

  121. An RC Helicopter Autonomous Control System with Single Web Camera Peer-reviewed

    Tong Ye, Shogo Arai, Koichi Hashimoto

    2012 PROCEEDINGS OF SICE ANNUAL CONFERENCE (SICE) 2127-2132 2012

  122. Fast Sensor Scheduling for Spatially Distributed Sensors Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    IEEE TRANSACTIONS ON AUTOMATIC CONTROL 56 (8) 1900-1905 2011/08

    DOI: 10.1109/TAC.2011.2141450  

    ISSN: 0018-9286

    eISSN: 1558-2523

  123. Fast and Adaptive Auto-focusing Microscope

    OBARA Takeshi, IGARASHI Yasunobu, HASHIMOTO Koichi

    Transactions of the Society of Instrument and Control Engineers 47 (1) 31-39 2011

    Publisher: The Society of Instrument and Control Engineers

    DOI: 10.9746/sicetr.47.31  

    ISSN: 0453-4654

    eISSN: 1883-8189

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    Optical microscopes are widely used in biological and medical researches. By using the microscope, we can observe cellular movements including intracellular ions and molecules tagged with fluorescent dyes at a high magnification. However, a freely motile cell easily escapes from a 3D field of view of the typical microscope. Therefore, we propose a novel auto-focusing algorithm and develop a auto-focusing and tracking microscope. XYZ positions of a microscopic stage are feedback controlled to focus and track the cell automatically. A bright-field image is used to estimate a cellular position. XY centroids are used to estimate XY positions of the tracked cell. To estimate Z position, we use a diffraction pattern around the cell membrane. This estimation method is so-called Depth from Diffraction (DFDi). However, this method is not robust for individual differences between cells because the diffraction pattern depends on each cellular shape. Therefore, in this study, we propose a real-time correction of DFDi by using 2D Laplacian of an intracellular area as a goodness of the focus. To evaluate the performance of our developed algorithm and microscope, we auto-focus and track a freely moving paramecium. In this experimental result, the paramecium is auto-focused and kept inside the scope of the microscope during 45s. The evaluated focal error is within 5&micro;m, while a length and a thickness of the paramecium are about 200&micro;m and 50&micro;m, respectively.

  124. 3D Measurement Using a High-Speed Projector-Camera System with Application to Physical Interaction Games

    TOMA Kota, KAGAMI Shingo, HASHIMOTO Koichi

    Transactions of the Virtual Reality Society of Japan 16 (2) 251-260 2011

    Publisher: THE VIRTUAL REALITY SOCIETY OF JAPAN

    DOI: 10.18974/tvrsj.16.2_251  

    ISSN: 1344-011X

    eISSN: 2423-9593

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    In this paper, we describe high-speed 3D position and normal measurement of an arbitrarily specified point of interest using a high-speed projector-camera system. A cross line pattern is adaptively projected onto the point of interest and the reflected pattern on an object surface is captured by the camera and analyzed to obtain the position and normal information. Using this measurement system, we describe new game designs in which real-time interaction with non-structured 3D real environment is featured.

  125. A method of personal positioning for indoor customer tracking utilizing wearable inertial sensors

    Yasuaki Ohtaki, Dan Hu, Koichi Hashimoto, Hikaru Inooka

    INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS 36 (1-2) 75-83 2011

    DOI: 10.3233/JAE-2011-1346  

    ISSN: 1383-5416

  126. Fast and adaptive auto-focusing algorithm for microscopic cell observation

    Takeshi Obara, Yasunobu Igarashi, Koichi Hashimoto

    2011 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS 7-12 2011

    DOI: 10.1109/IROS.2011.6048505  

    ISSN: 2153-0858

  127. Experimental studies on prediction in air hockey games Peer-reviewed

    Yusuke Arai, Shingo Kagami, Koichi Hashimoto

    2011 IEEE/SICE International Symposium on System Integration, SII 2011 112-117 2011

    DOI: 10.1109/SII.2011.6147429  

  128. Camera localization by CAD model matching Peer-reviewed

    Chuantao Zang, Koichi Hashimoto

    2011 IEEE/SICE International Symposium on System Integration, SII 2011 30-35 2011

    DOI: 10.1109/SII.2011.6147414  

  129. 3D Object tracking using computer graphics and edge Peer-reviewed

    Chuantao Zang, Koichi Hashimoto, Jungjae Moon

    2011 IEEE International Conference on Robotics and Biomimetics, ROBIO 2011 2407-2408 2011

    DOI: 10.1109/ROBIO.2011.6181660  

  130. A visual tracking strategy using computer graphics and edge Peer-reviewed

    Chuantao Zang, Koichi Hashimoto, Jungjae Moon

    2011 IEEE International Conference on Robotics and Biomimetics, ROBIO 2011 981-986 2011

    DOI: 10.1109/ROBIO.2011.6181415  

  131. Visual servo microscope for locking on single neuron of a worm Peer-reviewed

    Mitsunori Maru, Min Chen, Koichi Hashimoto

    2011 IEEE International Conference on Robotics and Biomimetics, ROBIO 2011 2844-2849 2011

    DOI: 10.1109/ROBIO.2011.6181736  

  132. Fast and adaptive auto-focusing algorithm for microscopic cell observation Peer-reviewed

    Takeshi Obara, Yasunobu Igarashi, Koichi Hashimoto

    2011 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS 7-12 2011

    DOI: 10.1109/SII.2011.6147429  

    ISSN: 2153-0858

  133. Performance evaluation of illumination-based synchronization of high-speed vision sensors in dynamic scenes Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    2010 International Conference on Advanced Mechatronics 2010 573-578 2010/10

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1007/978-3-642-16587-0_35  

    ISSN: 1348-8961

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    To acquire images of dynamic scenes from multiple points of view simultaneously, the acquisition time of vision sensors should be synchronized. In this paper, an advanced illumination-based synchronization algorithm derived from the phase-locked loop (PLL) algorithm is proposed and evaluated. To remove the dependency of system behavior on the fluctuant amplitude of illumination, which may be caused by moving objects or variational distance between illumination and objects, the negative feedback amount to the PLL system is normalized by the estimated maximum time correlation value between the output signal and its quadrature counterpart, to generate stable synchronization even in highly dynamic scenes. Both simulated results and real world experiments demonstrate successful synchronization. System performance is also analyzed to optimize the settings.

  134. A Signal Normalization Technique for Illumination-Based Synchronization of 1,000-fps Real-Time Vision Sensors in Dynamic Scenes Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    SENSORS 10 (9) 8751-8771 2010/09

    ISSN: 1424-8220

    eISSN: 1424-8220

  135. A Signal Normalization Technique for Illumination-Based Synchronization of 1,000-fps Real-Time Vision Sensors in Dynamic Scenes Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    SENSORS 10 (9) 8719-8739 2010/09

    DOI: 10.3390/s100908719  

    ISSN: 1424-8220

    eISSN: 1424-8220

  136. Illumination-Based Synchronization of High-Speed Vision Sensors Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    SENSORS 10 (6) 5530-5547 2010/06

    DOI: 10.3390/s100605530  

    ISSN: 1424-8220

    eISSN: 1424-8220

  137. Lecture Notes in Control and Information Sciences: Preface

    Graziano Chesi, Koichi Hashimoto

    Lecture Notes in Control and Information Sciences 401 2010/04/05

    ISSN: 0170-8643

  138. Visual servoing for beating heart surgery

    Wael Bachta, Pierre Renaud, Ezio Malis, Koichi Hashimoto, Jacques Gangloff

    Lecture Notes in Control and Information Sciences 401 91-114 2010

    DOI: 10.1007/978-1-84996-089-2_6  

    ISSN: 0170-8643

  139. Autonomous flight of small helicopter with real-time camera calibration

    Takanori Matsukawa, Shogo Arai, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 242-247 2010

    DOI: 10.1109/SII.2010.5708332  

  140. Fluorescent microscope system to track a particular region of C. elegans

    Mitsunori Maru, Yasunobu Igarashi, Shogo Arai, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 347-352 2010

    DOI: 10.1109/SII.2010.5708350  

  141. An improved visual inspection system using visual servo

    Chuantao Zang, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 13-18 2010

    DOI: 10.1109/SII.2010.5708294  

  142. Real-Time Virtual Haptization of an Object Surface Measured by a High-Speed Projector-Camera System

    Kota Toma, Shingo Kagami, Koichi Hashimoto

    IEEE/RSJ 2010 INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2010) 5067-5072 2010

    DOI: 10.1109/IROS.2010.5651631  

    ISSN: 2153-0858

  143. Efficient second-order minimization based visual tracking on moving face

    Le Duc Hanh, Chyi-Yeu Lin, Chi-Ying Lin, Koichi Hashimoto

    Proceedings of the IASTED International Conference on Robotics, Robo 2010 40-46 2010

    DOI: 10.2316/P.2010.703-027  

  144. Time-domain augmented reality based on locally adaptive video sampling

    Tatsuro Orikasa, Shingo Kagami, Koichi Hashimoto

    9th IEEE International Symposium on Mixed and Augmented Reality 2010: Science and Technology, ISMAR 2010 - Proceedings 261-262 2010

    DOI: 10.1109/ISMAR.2010.5643597  

  145. An Advanced Algorithm for Illumination-Based Synchronization of High-Speed Vision Sensors in Dynamic Scenes

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    INTELLIGENT ROBOTICS AND APPLICATIONS, PT II 6425 378-389 2010

    DOI: 10.1007/978-3-642-16587-0_35  

    ISSN: 0302-9743

    eISSN: 1611-3349

  146. Fast Sensor Scheduling with Communication Costs for Sensor Networks Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    2010 AMERICAN CONTROL CONFERENCE 295-300 2010

    DOI: 10.1109/ACC.2010.5530843  

    ISSN: 0743-1619

    eISSN: 2378-5861

  147. A New Approach of GPU Accelerated Visual Tracking Peer-reviewed

    Chuantao Zang, Koichi Hashimoto

    ADVANCED CONCEPTS FOR INTELLIGENT VISION SYSTEMS, PT II 6475 354-365 2010

    DOI: 10.1007/978-3-642-17691-3_33  

    ISSN: 0302-9743

    eISSN: 1611-3349

  148. An Object-Tracking Algorithm Based on Particle Filtering with Region-Based Level Set Method Peer-reviewed

    Xianfeng Fei, Koichi Hashimoto

    IEEE/RSJ 2010 INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2010) 2010

    DOI: 10.1109/IROS.2010.5650445  

    ISSN: 2153-0858

  149. Using GPUs to improve system performance in Visual Servo systems Peer-reviewed

    Chuantao Zang, Koichi Hashimoto

    IEEE/RSJ 2010 INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2010) 3937-3942 2010

    DOI: 10.1109/IROS.2010.5650418  

    ISSN: 2153-0858

  150. Online 3-D trajectory estimation of a flying object from a monocular image sequence for catching Invited Peer-reviewed

    Rafael Herrejon Mendoza, Shingo Kagami, Koichi Hashimoto

    Visual Servoing 121-134 2010

  151. Unmanned helicopter control via visual servoing with occlusion handling Invited Peer-reviewed

    Yasushi Iwatani, Kei Watanabe, Koichi Hashimoto

    Lecture Notes in Control and Information Sciences 401 361-374 2010

    DOI: 10.1007/978-1-84996-089-2_19  

    ISSN: 0170-8643

  152. Multi-camera visual servoing of a micro helicopter under occlusions Invited Peer-reviewed

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    Visual Servoing 135-148 2010

  153. Visual servoing for beating heart surgery Invited Peer-reviewed

    Wael Bachta, Pierre Renaud, Ezio Malis, Koichi Hashimoto, Jacques Gangloff

    Lecture Notes in Control and Information Sciences 401 91-114 2010

    DOI: 10.1007/978-1-84996-089-2_6  

    ISSN: 0170-8643

  154. Real-Time Virtual Haptization of an Object Surface Measured by a High-Speed Projector-Camera System Peer-reviewed

    Kota Toma, Shingo Kagami, Koichi Hashimoto

    IEEE/RSJ 2010 INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2010) 5067-5072 2010

    DOI: 10.1109/IROS.2010.5651631  

    ISSN: 2153-0858

  155. Time-domain augmented reality based on locally adaptive video sampling Peer-reviewed

    Tatsuro Orikasa, Shingo Kagami, Koichi Hashimoto

    9th IEEE International Symposium on Mixed and Augmented Reality 2010: Science and Technology, ISMAR 2010 - Proceedings 261-262 2010

    DOI: 10.1109/ISMAR.2010.5643597  

  156. An Advanced Algorithm for Illumination-Based Synchronization of High-Speed Vision Sensors in Dynamic Scenes Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    INTELLIGENT ROBOTICS AND APPLICATIONS, PT II 6425 378-389 2010

    DOI: 10.1007/978-3-642-16587-0_35  

    ISSN: 0302-9743

    eISSN: 1611-3349

  157. 3D measurement of a surface point using a high-speed projector-camera system for augmented reality games Peer-reviewed

    Kota Toma, Shingo Kagami, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 84-89 2010

    DOI: 10.1109/SII.2010.5708306  

  158. Frame indexing of the illumination-based synchronized high-speed vision sensors Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 1-6 2010

    DOI: 10.1109/SII.2010.5708292  

  159. Accelerometer detection in a camera view based on feature point tracking Peer-reviewed

    Yuichi Maki, Shingo Kagami, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 448-453 2010

    DOI: 10.1109/SII.2010.5708367  

  160. 1,000-fps visual feedback control of an active vision system over a high-load network

    Daisuke Wako, Shingo Kagami, Koichi Hashimoto

    Proceedings of the 11th IAPR Conference on Machine Vision Applications, MVA 2009 114-117 2009/12/01

  161. Stability of switched stochastic systems in discrete-time

    Yasushi Iwatani, Shogo Arai, Koichi Hashimoto

    ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings 4097-4100 2009/12/01

  162. Fast sensor scheduling for estimation of networked sensor systems

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings 1240-1243 2009/12/01

  163. Fast Sensor Scheduling for Spatially Distributed Heterogeneous Sensors Peer-reviewed

    ARAI Shogo, IWATANI Yasushi, HASHIMOTO Koichi

    Transactions of the Institute of Systems, Control and Information Engineers 22 (9) 324-330 2009/09/15

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

    DOI: 10.5687/iscie.22.324  

    ISSN: 1342-5668

    eISSN: 2185-811X

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    This paper addresses a sensor scheduling problem for a class of networked sensor systems whose sensors are spatially distributed and measurements are influenced by state dependent noise. Sensor scheduling is required to achieve power saving since each sensor operates with a battery power source. A networked sensor system usually consists of a large number of sensors, but the sensors can be classified into a few different types. We therefore introduce a concept of sensor types in the sensor model to provide fast sensor scheduling algorithms for a class of networked sensor systems. The computation time of the proposed algorithms is exponential in the number of the sensor types, while that of standard algorithms increases exponentially with the number of the sensors. <br>

  164. A condition for better estimation using asynchronous sampling than synchronous sampling Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    European Control Conference 2009/08

  165. Fast sensor scheduling for estimation of networked sensor systems Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    ICROS-SICE International Joint Conference 2009 2009/08

  166. Stability of switched stochastic systems in discrete-time Peer-reviewed

    Yasushi Iwatani, Shogo Arai, Koichi Hashimoto

    ICROS-SICE International Joint Conference 2009 2009/08

  167. A parallel computation of the region-based level set method for boundary detection with moving object Peer-reviewed

    X. Fei, Y. Igarashi, M. Shinkai, M. Ishikawa, K. Hashimoto

    Robotics and Macharonics 21 (6) 698-708 2009/06

  168. 1,000-fps visual feedback control of an active vision system over a high-load network Peer-reviewed

    Daisuke Wako, Shingo Kagami, Koichi Hashimoto

    IAPR 11th Conference on Machine Vision Applications 114-117 2009/05

  169. Effects of camera calibration errors on RLS trajectory estimation of a spinning flying object Peer-reviewed

    Rafael Herrejon, Shingo Kagami, Koichi Hashimoto

    4th International Conference on Autonomous Robots and Agents 4199-4226 2009/02

  170. Visual Servo Control that is Robust to Occlusion Peer-reviewed

    IWATANI Yasushi, WATANABE Kei, HASHIMOTO Koichi

    Journal of the Robotics Society of Japan 27 (1) 55-62 2009/01/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.27.55  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    This paper proposes a visual servo control algorithm with occlusion handling. The proposed control algorithm selects a set of correctly extracted image features, and it estimates all image features from the correctly extracted image features. The estimation procedure enables us to track image features even when occlusion occurs. In addition, even when the algorithm fails to track a moving image feature, it does not need any global search over the entire image plane to find the failed image feature. The image feature selection and estimation are combined with visual servo control in the proposed algorithm. The control algorithm has low computational complexity, since image Jacobian is used for image feature selection and estimation. An experimental result shows the validity of the proposed visual servo control law.

  171. Illumination-based Real-Time Contactless Synchronization of High-Speed Vision Sensors

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    2008 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS, VOLS 1-4 1750-1755 2009

    DOI: 10.1109/ROBIO.2009.4913266  

  172. Position Based Visual Servoing for Catching a 3-D Flying Object Using RLS Trajectory Estimation from a Monocular Image Sequence

    R. Herrejon, S. Kagami, K. Hashimoto

    2009 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO 2009), VOLS 1-4 665-670 2009

    DOI: 10.1109/ROBIO.2009.5420593  

  173. Online 3-D Trajectory Estimation of a Flying Object from a Monocular Image Sequence

    R. Herrejon, S. Kagami, K. Hashimoto

    2009 IEEE-RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS 2496-2501 2009

    DOI: 10.1109/IROS.2009.5353936  

  174. Scalable Vision Graph Estimation for a Vision Sensor Network Peer-reviewed

    Shin Kondo, Shingo Kagami, Koichi Hashimoto

    2009 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO 2009), VOLS 1-4 865-870 2009

    DOI: 10.1109/ROBIO.2009.5420559  

  175. Parallel computation of level set method for 500 Hz visual servo control Peer-reviewed

    Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

    28TH INTERNATIONAL CONGRESS ON HIGH-SPEED IMAGING AND PHOTONICS 7126 2009

    DOI: 10.1117/12.822582  

    ISSN: 0277-786X

    eISSN: 1996-756X

  176. Parallel computation of level set method for 500 Hz visual servo control Peer-reviewed

    Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

    28TH INTERNATIONAL CONGRESS ON HIGH-SPEED IMAGING AND PHOTONICS 7126 2009

    DOI: 10.1117/12.822582  

    ISSN: 0277-786X

    eISSN: 1996-756X

  177. Illumination-based Real-Time Contactless Synchronization of High-Speed Vision Sensors Peer-reviewed

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    2008 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS, VOLS 1-4 1750-1755 2009

    DOI: 10.1109/ROBIO.2009.4913266  

  178. Parallel Region-Based Level Set Method with Displacement Correction for Tracking a Single Moving Object Peer-reviewed

    Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

    ADVANCED CONCEPTS FOR INTELLIGENT VISION SYSTEMS, PROCEEDINGS 5807 462-+ 2009

    ISSN: 0302-9743

    eISSN: 1611-3349

  179. Parallel computation of level set method for 500 Hz visual servo control Peer-reviewed

    Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

    28TH INTERNATIONAL CONGRESS ON HIGH-SPEED IMAGING AND PHOTONICS 7126 2009

    DOI: 10.1117/12.822582  

    ISSN: 0277-786X

    eISSN: 1996-756X

  180. Fast Sensor Scheduling for Spatially Distributed Heterogeneous Sensors Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    2009 AMERICAN CONTROL CONFERENCE, VOLS 1-9 2785-2790 2009

    DOI: 10.1109/ACC.2009.5160314  

    ISSN: 0743-1619

  181. Development of an Automatic Dishwashing Robot System Peer-reviewed

    Kazuhiro Kosuge, Yasuhisa Hirata, Jina Lee, Akira Kawamura, Koichi Hashimoto, Shingo Kagami, Yu Hayashi, Norio Yokoshima, Hiroshi Miyazawa, Ryosuke Teranaka, Yasutoshi Natsuizaka, Kazuhisa Sakai, Mizuo Koizumi, Junji Koyama, Naoki Kanayama, Shunichi Tezuka, Hiroshi Torimitsu

    2009 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION, VOLS 1-7, CONFERENCE PROCEEDINGS 43-+ 2009

    DOI: 10.1109/ICMA.2009.5245127  

  182. Online 3-D Trajectory Estimation of a Flying Object from a Monocular Image Sequence Peer-reviewed

    R. Herrejon, S. Kagami, K. Hashimoto

    2009 IEEE-RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS 2496-2501 2009

    DOI: 10.1109/IROS.2009.5353936  

  183. Composite Visual Servoing for Catching a 3-D Flying Object Using RLS Trajectory Estimation from a Monocular Image Sequence Peer-reviewed

    R. Herrejon, S. Kagami, K. Hashimoto

    IEEE INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL INTELLIGENCE IN ROBOTICS AND AUTOMATION 526-531 2009

    DOI: 10.1109/CIRA.2009.5423229  

  184. Scalable Vision Graph Estimation for a Vision Sensor Network Peer-reviewed

    Shin Kondo, Shingo Kagami, Koichi Hashimoto

    2009 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS (ROBIO 2009), VOLS 1-4 865-870 2009

    DOI: 10.1109/ROBIO.2009.5420559  

  185. Analysis of Switching Planes for the Sensor Scheduling Problem Peer-reviewed

    ARAI Shogo, IWATANI Yasushi, HASHIMOTO Koichi

    Transactions of the Institute of Systems, Control and Information Engineers 21 (12) 417-419 2008/12/15

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

    DOI: 10.5687/iscie.21.417  

    ISSN: 1342-5668

    eISSN: 2185-811X

  186. Trajectory estimation of a flying object using high speed vision for catching

    Rafael Herrejon, Shingo Kagami, Koichi Hashimoto

    Proceedings of the 10th IASTED International Conference on Control and Applications, CA 2008 219-224 2008/12/01

  187. Fast and Optimal Sensor Scheduling Peer-reviewed

    ARAI Shogo, IWATANI Yasushi, HASHIMOTO Koichi

    Transactions of the Institute of Systems, Control and Information Engineers 21 (10) 327-335 2008/10/15

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

    DOI: 10.5687/iscie.21.327  

    ISSN: 1342-5668

    eISSN: 2185-811X

    More details Close

    This paper addresses a sensor scheduling problem for large-scale networked sensor systems. Sensor scheduling is required to achieve power saving or to make efficient use of communication channels. The scheduling problem is formulated as a model predictive control problem with single sensor measurement per time. It is assumed that all sensors have the same characteristics and they have state dependent noise. We propose a fast and optimal sensor scheduling algorithm for a class of systems with a sensor characteristics. Computation time of the proposed algorithm is proportional to the number of sensors, and it is independent of the prediction horizon. In addition, a fast sensor scheduling algorithm is presented for a class of systems with a mild condition.

  188. Automatic take-off and landing of an unmanned helicopter using vision-based control with occlusion handling Peer-reviewed

    Yasushi Iwatani, Kei Watanabe, Koichi Hashimoto

    17th CISM-IFToMM Symposium on Robot Design, Dynamics, and Control (RoManSy) 11-18 2008/07

  189. 4ms level set method - parallel implementation of contour detection of paramecia by using cpv system Peer-reviewed

    Xianfeng Fei, Y. Igarashi, K. Hashimoto

    17th CISM-IFToMM Symposium on Robot Design, Dynamics, and Control (RoManSy) 27-32 2008/07

  190. Dynamics modeling and real-time observation of galvanotaxis in Paramecium caudatum

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    BIO-MECHANISMS OF SWIMMING AND FLYING: FLUID DYNAMICS, BIOMIMETIC ROBOTS, AND SPORTS SCIENCE 29-+ 2008

  191. Visual tracking with occlusion handling for visual servo control Peer-reviewed

    Yasushi Iwatani, Kei Watanabe, Koichi Hashimoto

    2008 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-9 101-106 2008

    DOI: 10.1109/ROBOT.2008.4543193  

    ISSN: 1050-4729

  192. Multi-Camera Visual Servoing of Multiple Micro Helicopters

    Yasushi Iwatani, Kohou, Koichi Hashimoto

    2008 PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-7 2331-2334 2008

    DOI: 10.1109/SICE.2008.4655072  

  193. Fast sensor scheduling for mobile sensor networks

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    Proceedings of the SICE Annual Conference 2442-2446 2008

    DOI: 10.1109/SICE.2008.4655074  

  194. 2D tracking of single paramecium by using parallel level set method and visual servoing Peer-reviewed

    Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

    2008 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS, VOLS 1-3 752-757 2008

    DOI: 10.1109/AIM.2008.4601754  

    ISSN: 2159-6255

  195. 2D tracking of single paramecium by using parallel level set method and visual servoing Peer-reviewed

    Xianfeng Fei, Yasunobu Igarashi, Koichi Hashimoto

    2008 IEEE/ASME INTERNATIONAL CONFERENCE ON ADVANCED INTELLIGENT MECHATRONICS, VOLS 1-3 752-757 2008

    DOI: 10.1109/AIM.2008.4601754  

    ISSN: 2159-6255

  196. Fluorescent and tracking microscope Peer-reviewed

    Takishi Obara, Yasunobu Igarashi, Daisuke Wako, Hiroshi Tusbokawa, Yasuo Nakaoka, Koichi Hashimoto

    Focus on Microscopy 2008 23 2008

  197. Visual control of a micro helicopter under dynamic occlusions Invited Peer-reviewed

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    RECENT PROGRESS IN ROBOTICS: VIABLE ROBOTIC SERVICE TO HUMAN 370 185-197 2008

    DOI: 10.1007/978-3-540-76729-9_15  

    ISSN: 0170-8643

  198. Image-based visual PID control of a micro helicopter using a stationary camera Peer-reviewed

    Kei Watanabe, Yuta Yoshihata, Yasushi Iwatani, Koichi Hashimoto

    ADVANCED ROBOTICS 22 (2-3) 381-393 2008

    DOI: 10.1163/156855308X292637  

    ISSN: 0169-1864

    eISSN: 1568-5535

  199. Fast Sensor Scheduling for Mobile Sensor Networks Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    2008 PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-7 2341-2345 2008

    DOI: 10.1109/SICE.2008.4655074  

  200. Multi-Camera Visual Servoing of Multiple Micro Helicopters Peer-reviewed

    Yasushi Iwatani, Kohou, Koichi Hashimoto

    2008 PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-7 2331-2334 2008

    DOI: 10.1109/SICE.2008.4655072  

  201. Identifying a Moving Object with an Accelerometer in a Camera View Peer-reviewed

    Osamu Shigeta, Shingo Kagami, Koichi Hashimoto

    2008 IEEE/RSJ INTERNATIONAL CONFERENCE ON ROBOTS AND INTELLIGENT SYSTEMS, VOLS 1-3, CONFERENCE PROCEEDINGS 3872-3877 2008

    DOI: 10.1109/IROS.2008.4651201  

  202. Fast and Optimal Sensor Scheduling for Networked Sensor Systems Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    47TH IEEE CONFERENCE ON DECISION AND CONTROL, 2008 (CDC 2008) 459-464 2008

    DOI: 10.1109/CDC.2008.4739445  

    ISSN: 0743-1546

  203. A visual-servo-based assistant system for unmanned helicopter control Peer-reviewed

    Kei Watanabe, Yasushi Iwatani, Kenichiro Nonaka, Koichi Hashimoto

    2008 IEEE/RSJ INTERNATIONAL CONFERENCE ON ROBOTS AND INTELLIGENT SYSTEMS, VOLS 1-3, CONFERENCE PROCEEDINGS 822-827 2008

    DOI: 10.1109/IROS.2008.4651153  

  204. A cellular automaton model for collective motion of microorganisms

    Yasushi Iwatani, Koichi Hashimoto, Koichi Hashimoto, Yuki Deguchi

    IFAC Proceedings Volumes (IFAC-PapersOnline) 11 161-166 2007/12/01

    ISSN: 1474-6670

  205. Visual control of a micro helicopter under dynamic occlusions Peer-reviewed

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    In the 13th International Conference on Advanced Robotics 785-790 2007/08

  206. Visual control of a micro helicopter under dynamic occlusions Peer-reviewed

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    13th International Conference on Advanced Robotics 785-790 2007/08

  207. A cellular automation model for collective motion of microorganisms Peer-reviewed

    Yasushi Iwatani, Koichi Hashimoto, Yuki Deguchi

    11th IFAC/IFORD/IMAACS/IFIP Syposium on Large Scale Systems 2007/07

  208. A cellular automaton model for collective motion of microorganisms Peer-reviewed

    Yasushi Iwatani, Koichi Hashimoto, Yuki Deguchi

    11th IFAC/IFORS/IMACS/IFIP Symposium on Large Scale Systems 2007/07

  209. Trajectory Planning of Motile Cell for Microrobotic Applications Peer-reviewed

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Journal of Robotics and Mechatronics 19 (2) 190-197 2007/04

    DOI: 10.20965/jrm.2007.p0190  

  210. Trajectory estimation of a spinning flying object using a high-speed vision Peer-reviewed

    Rafael Herrejon, Shingo Kagami, Koichi Hashimoto

    Robotics and Automation Conference, 2007 2007/03/26

  211. Image-based visual PID control of a micro helicopter using a stationary camera

    Kei Watanabe, Yata Yoshihata, Yasushi Iwatani, Koichi Hashimoto

    PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-8 2992-2997 2007

    DOI: 10.1109/SICE.2007.4421505  

  212. Multi-camera visual servoing of a micro helicopter under occlusions

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9 2621-2626 2007

    DOI: 10.1109/IROS.2007.4399025  

  213. Optimal sensor scheduling of sensors in a sensor network for mobile robot navigation

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    Proceedings of the American Control Conference 1027-1032 2007

    DOI: 10.1109/ACC.2007.4283086  

    ISSN: 0743-1619

  214. 3,000-fps 3-d shape measurement using a high-speed camera-projector system Peer-reviewed

    Joji Takei, Shingo Kagami, Koichi Hashimoto

    2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9 3217-3222 2007

    DOI: 10.1109/IROS.2007.4399626  

  215. A dynamically reconfigurable architecture combining pixel-level SIMD and operation-pipeline modes for high frame rate visual processing Peer-reviewed

    Nao Iwata, Shingo Kagami, Koichi Hashimoto

    ICFPT 2007: INTERNATIONAL CONFERENCE ON FIELD-PROGRAMMABLE TECHNOLOGY, PROCEEDINGS 321-324 2007

    DOI: 10.1109/FPT.2007.4439276  

  216. High-speed visual tracking of the nearest point of an object using 1,000-fps adaptive pattern projection Peer-reviewed

    Tomoyuki Inoue, Shingo Kagami, Joji Takei, Koichi Hashimoto, Kenkichi Yamamoto, Idaku Ishii

    2007 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, VOLS 1-8 3590-+ 2007

    DOI: 10.1109/CVPR.2007.383476  

    ISSN: 1063-6919

  217. Trajectory estimation of a spinning flying object using a high-speed vision Peer-reviewed

    Rafael Herrejon, Shingo Kagami, Koichi Hashimoto

    Robotics and Automation Conference 2007

  218. High-speed visual tracking of the nearest point of an object using 1,000-fps adaptive pattern projection Peer-reviewed

    Tomoyuki Inoue, Shingo Kagami, Joji Takei, Koichi Hashimoto, Kenkichi Yamamoto, Idaku Ishii

    2007 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION, VOLS 1-8 3590-+ 2007

    DOI: 10.1109/CVPR.2007.383476  

    ISSN: 1063-6919

  219. Optimal sensor scheduling of sensors in a sensor network for mobile robot navigation Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    2007 AMERICAN CONTROL CONFERENCE, VOLS 1-13 5688-5693 2007

    DOI: 10.1109/ACC.2007.4283086  

    ISSN: 0743-1619

    eISSN: 2378-5861

  220. Optimal sensor scheduling of sensors in a sensor network for mobile robot navigation Peer-reviewed

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    Proceedings of the American Control Conference 1027-1032 2007

    DOI: 10.1109/ACC.2007.4283086  

    ISSN: 0743-1619

  221. Image-based visual PID control of a micro helicopter using a stationary camera Peer-reviewed

    Kei Watanabe, Yata Yoshihata, Yasushi Iwatani, Koichi Hashimoto

    PROCEEDINGS OF SICE ANNUAL CONFERENCE, VOLS 1-8 2992-2997 2007

    DOI: 10.1109/SICE.2007.4421505  

  222. Multi-camera visual servoing of a micro helicopter under occlusions Peer-reviewed

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9 2621-2626 2007

    DOI: 10.1109/IROS.2007.4399025  

  223. Multi-camera visual servoing of a micro helicopter under occlusions Peer-reviewed

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    2007 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS, VOLS 1-9 2621-2626 2007

    DOI: 10.1109/IROS.2007.4399025  

  224. A dynamically reconfigurable architecture combining pixel-level SIMD and operation-pipeline modes for high frame rate visual processing Peer-reviewed

    Nao Iwata, Shingo Kagami, Koichi Hashimoto

    ICFPT 2007: INTERNATIONAL CONFERENCE ON FIELD-PROGRAMMABLE TECHNOLOGY, PROCEEDINGS 321-324 2007

    DOI: 10.1109/FPT.2007.4439276  

  225. Model-less visual servoing using modified simplex optimization Peer-reviewed

    Kanako Miura, Koichi Hashimoto, Hikaru Inooka, Jacques A. Gangloff, Michel F. de Mathelin

    Artificial Life and Robotics 10 (2) 131-135 2006/11

    DOI: 10.1007/s10015-005-0374-4  

    ISSN: 1433-5298

  226. A physical model for galvanotaxis of Paramecium cell Peer-reviewed

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    JOURNAL OF THEORETICAL BIOLOGY 242 (2) 314-328 2006/09

    DOI: 10.1016/j.jtbi.2006.02.021  

    ISSN: 0022-5193

    eISSN: 1095-8541

  227. Dynamics Modeling and Real-Time Observation of Galvanotaxis in Paramecium caudatum toward Robotic Maneuvering Peer-reviewed

    Naoko Ogawa, Hiromasa Oku, Masatoshi Ishikawa, Koichi Hashimoto

    The 3rd International Symposium on Aero Aqua Bio-mechanisms (2) 1-8 2006/07/05

  228. High-speed autofocusing of a cell using diffraction patterns Peer-reviewed

    H Oku, M Ishikawa, Theodorus, K Hashimoto

    OPTICS EXPRESS 14 (9) 3952-3960 2006/05

    DOI: 10.1364/OE.14.003952  

    ISSN: 1094-4087

  229. High-speed autofocusing of a cell using diffraction patterns

    Hiromasa Oku, Masatoshi Ishikawa, Theodorus, Koichi Hashimoto

    Optics Express 14 (9) 3952-3960 2006

    Publisher: Optical Society of America (OSA)

    DOI: 10.1364/OE.14.003952  

    ISSN: 1094-4087

  230. Relationships between camera performance and control performance in visual control systems

    K. Watanabe, Y. Iwatani, K. Hashimoto, S. W. Kagami, Y. Minier

    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13 335-+ 2006

    DOI: 10.1109/SICE.2006.315115  

  231. Evaluation and Suppression of Overrun of Microorganisms using Dynamics Model for Microrobotic Application

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    INTELLIGENT AUTONOMOUS SYSTEMS 9 1015-+ 2006

  232. Visual feedback control for a cluster of microorganisms

    Koichi Hashimoto, Kiyonori Takahashi, Naoko Ogawa, Hiromasa Oku

    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13 1068-+ 2006

    DOI: 10.1109/SICE.2006.314769  

  233. Evaluation and Suppression of Overrun of Microorganisms using Dynamics Model for Microrobotic Application Peer-reviewed

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    INTELLIGENT AUTONOMOUS SYSTEMS 9 9 1015-+ 2006

  234. Organized motion control of a lot of microorganisms using visual feedback Peer-reviewed

    Kiyonori Takahashi, Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto

    2006 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA), VOLS 1-10 1408-+ 2006

    DOI: 10.1109/ROBOT.2006.1641906  

    ISSN: 1050-4729

    eISSN: 2577-087X

  235. High-speed focusing of cells using depth-from-diffraction method Peer-reviewed

    Hiromasa Oku, Theodorus, Koichi Hashimoto, Masatoshi Ishikawa

    2006 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION (ICRA), VOLS 1-10 3636-+ 2006

    DOI: 10.1109/ROBOT.2006.1642257  

    ISSN: 1050-4729

  236. Visual feedback control for a cluster of microorganisms Peer-reviewed

    Koichi Hashimoto, Kiyonori Takahashi, Naoko Ogawa, Hiromasa Oku

    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13 1068-+ 2006

    DOI: 10.1109/SICE.2006.314769  

  237. Relationships between camera performance and control performance in visual control systems Peer-reviewed

    K. Watanabe, Y. Iwatani, K. Hashimoto, S. W. Kagami, Y. Minier

    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13 335-+ 2006

    DOI: 10.1109/SICE.2006.315115  

  238. Relationships between camera performance and control performance in visual control systems Peer-reviewed

    K. Watanabe, Y. Iwatani, K. Hashimoto, S. W. Kagami, Y. Minier

    2006 SICE-ICASE INTERNATIONAL JOINT CONFERENCE, VOLS 1-13 335-+ 2006

    DOI: 10.1109/SICE.2006.315115  

  239. Visualization and estimation of contact stimuli using living microorganisms Peer-reviewed

    Anchelee Davies, Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    2006 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS, VOLS 1-3 445-+ 2006

    DOI: 10.1109/ROBIO.2006.340233  

  240. トラッキング顕微鏡による遊泳する微生物のin vivo計測

    奥寛雅, 尾川順子, 橋本浩一, 石川正俊

    バイオイメージング 14 (3) 148-149 2005/09/26

    ISSN: 1342-2634

  241. Microrobotic visual control of motile cells using high-speed tracking system Peer-reviewed

    N Ogawa, H Oku, K Hashimoto, M Ishikawa

    IEEE TRANSACTIONS ON ROBOTICS 21 (4) 704-712 2005/08

    DOI: 10.1109/TRO.2205.844686  

    ISSN: 1552-3098

    eISSN: 1941-0468

  242. Microorganism Tracking Microscope System Peer-reviewed

    H. Oku, N. Ogawa, K. Hashimoto, M. Ishikawa

    2005 IEEE International Conference on Robotics and Automation 2005/04

  243. Two-dimensional tracking of a motile micro-organism allowing high-resolution observation with various imaging techniques Peer-reviewed

    H Oku, N Ogawa, M Ishikawa, K Hashimoto

    REVIEW OF SCIENTIFIC INSTRUMENTS 76 (3) 2005/03

    DOI: 10.1063/1.1857632  

    ISSN: 0034-6748

  244. Visual servoing without Jacobian using modified simplex optimization

    K Miura, K Hashimoto, J Gangloff, M de Mathelin

    2005 IEEE International Conference on Robotics and Automation (ICRA), Vols 1-4 2005 3504-3509 2005

    DOI: 10.1109/ROBOT.2005.1570652  

    ISSN: 1050-4729

  245. A method of personal positioning for indoor customer tracking utilizing wearable inertial sensors - art. no. 60401W

    Y Ohtaki, D Hu, K Hashimoto, H Inooka

    ICMIT 2005: Mechatronics, MEMS, and Smart Materials 6040 W401-W401 2005

    DOI: 10.1117/12.664238  

    ISSN: 0277-786X

  246. Dynamics model of Paramecium galvanotaxis for microrobotic application

    N Ogawa, H Oku, K Hashimoto, M Ishikawa

    2005 IEEE International Conference on Robotics and Automation (ICRA), Vols 1-4 2005 1246-1251 2005

    DOI: 10.1109/ROBOT.2005.1570286  

    ISSN: 1050-4729

  247. Dynamics model of Paramecium galvanotaxis for microrobotic application Peer-reviewed

    N Ogawa, H Oku, K Hashimoto, M Ishikawa

    2005 IEEE International Conference on Robotics and Automation (ICRA), Vols 1-4 1246-1251 2005

    DOI: 10.1109/ROBOT.2005.1570286  

    ISSN: 1050-4729

  248. Visual servoing without Jacobian using modified simplex optimization Peer-reviewed

    K Miura, K Hashimoto, J Gangloff, M de Mathelin

    2005 IEEE International Conference on Robotics and Automation (ICRA), Vols 1-4 3504-3509 2005

    DOI: 10.1109/ROBOT.2005.1570652  

    ISSN: 1050-4729

  249. A method of personal positioning for indoor customer tracking utilizing wearable inertial sensors - art. no. 60401W Peer-reviewed

    Y Ohtaki, D Hu, K Hashimoto, H Inooka

    ICMIT 2005: Mechatronics, MEMS, and Smart Materials 6040 W401-W401 2005

    DOI: 10.1117/12.664238  

    ISSN: 0277-786X

  250. Examination of ball lifting task using a mobile robot

    Ryosuke Mon, Koichi Hashimoto, Fumiaki Takagi, Fumio Miyazaki

    2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 1 369-374 2004/12/01

  251. Keeping features in the field of view in eye-in-hand visual servoing: A switching approach Peer-reviewed

    Graziano Chesi, Koichi Hashimoto, Domenico Prattichizzo, Antonio Vicino

    IEEE Transactions on Robotics 20 (5) 908-913 2004/10

    DOI: 10.1109/TRO.2004.829456  

    ISSN: 1552-3098

  252. Keeping features in the field of view in eye-in-hand visual servoing: A switching approach Peer-reviewed

    G Chesi, K Hashimoto, D Prattichizzo, A Vicino

    IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION 20 (5) 908-913 2004/10

    DOI: 10.1109/TRO.2004.829456  

    ISSN: 1042-296X

  253. A simple technique for improving camera displacement estimation in eye-in-hand visual servoing Peer-reviewed

    G Chesi, K Hashimoto

    IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE 26 (9) 1239-1242 2004/09

    DOI: 10.1109/TPAMI.2004.56  

    ISSN: 0162-8828

    eISSN: 1939-3539

  254. Realtime Control with Linux OS Invited Peer-reviewed

    KUMAGAI Masaaki, MORI Yuichiro, HASHIMOTO Koichi

    Journal of The Society of Instrument and Control Engineers 43 (6) 515-520 2004/06/10

    Publisher: The Society of Instrument and Control Engineers

    DOI: 10.11499/sicejl1962.43.515  

    ISSN: 0453-4662

    eISSN: 1883-8170

  255. Variable-focus lens with 1-kHz bandwidth Peer-reviewed

    H Oku, K Hashimoto, M Ishikawa

    OPTICS EXPRESS 12 (10) 2138-2149 2004/05

    DOI: 10.1364/OPEX.12.002138  

    ISSN: 1094-4087

  256. Variable-focus lens with 1-kHz bandwidth

    Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Optics Express 12 (10) 2138-2149 2004

    Publisher: Optical Society of American (OSA)

    DOI: 10.1364/OPEX.12.002138  

    ISSN: 1094-4087

  257. Tracking and catching of 3D flying target based on GAG strategy

    R Mori, K Hashimoto, F Miyazaki

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 2004 5189-5194 2004

    ISSN: 1050-4729

  258. Dynamic active catching using a high-speed multifingered hand and a high-speed vision system

    Y Imai, A Namiki, K Hashimoto, M Ishikawa

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 2004 1849-1854 2004

    ISSN: 1050-4729

  259. Motile cell galvanotaxis control using high-speed tracking system

    N Ogawa, H Oku, K Hashimoto, M Ishikawa

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 2004 1646-1651 2004

    ISSN: 1050-4729

  260. Camera pose estimation from less than eight points in visual servoing

    G Chesi, K Hashimoto

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 2004 733-738 2004

    ISSN: 1050-4729

  261. Single-cell level continuous observation of microorganism galvanotaxis using high-speed vision

    N Ogawa, H Oka, K Hashimoto, M Ishikawa

    2004 2ND IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING: MACRO TO NANO, VOLS 1 and 2 2 1331-1334 2004

  262. Single-cell level continuous observation of microorganism galvanotaxis using high-speed vision Peer-reviewed

    N Ogawa, H Oka, K Hashimoto, M Ishikawa

    2004 2ND IEEE INTERNATIONAL SYMPOSIUM ON BIOMEDICAL IMAGING: MACRO TO NANO, VOLS 1 and 2 1331-1334 2004

  263. Tracking and catching of 3D flying target based on GAG strategy Peer-reviewed

    R Mori, K Hashimoto, F Miyazaki

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 5189-5194 2004

    ISSN: 1050-4729

  264. Dynamic active catching using a high-speed multifingered hand and a high-speed vision system Peer-reviewed

    Y Imai, A Namiki, K Hashimoto, M Ishikawa

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 1849-1854 2004

    ISSN: 1050-4729

  265. Motile cell galvanotaxis control using high-speed tracking system Peer-reviewed

    N Ogawa, H Oku, K Hashimoto, M Ishikawa

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 1646-1651 2004

    ISSN: 1050-4729

  266. Camera pose estimation from less than eight points in visual servoing Peer-reviewed

    G Chesi, K Hashimoto

    2004 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1- 5, PROCEEDINGS 733-738 2004

    ISSN: 1050-4729

  267. A hierarchical control architecture for high-speed visual servoing Peer-reviewed

    A Namiki, K Hashimoto, M Ishikawa

    INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH 22 (10-11) 873-888 2003/10

    ISSN: 0278-3649

  268. The Robot Gesture Generation Approach Based on Appearance from the User Viewpoint Peer-reviewed

    平松雅已, 八木康史, 橋本浩一, 谷内田正彦

    日本ロボット学会誌 21 (3) 265-272 2003/04/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.21.265  

    ISSN: 0289-1824

    eISSN: 1884-7145

    More details Close

    Generation of human-like gesture is an important factor for human- robot communication. However, Generation of smooth gesture by the robot manipulator is difficult because the difference between the human arm kinematics and robot arm kinematics is amplified in their appearances. In this paper, we propose the new robot gesture generation approach based on appearance from the user viewpoint.

  269. Improving camera displacement estimation in eye-in-hand visual servoing: a simple strategy

    G Chesi, K Hashimoto

    2003 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3, PROCEEDINGS 3 3911-3916 2003

    ISSN: 1050-4729

  270. A switching control law for keeping features in the field of view in eye-in-hand visual servoing

    G Chesi, K Hashimoto, D Prattichizzo, A Vicino

    2003 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3, PROCEEDINGS 3 3929-3934 2003

    ISSN: 1050-4729

  271. Effects of camera calibration errors on static-eye and hand-eye visual servoing

    G Chesi, K Hashimoto

    ADVANCED ROBOTICS 17 (10) 1023-1039 2003

    DOI: 10.1163/156855303322554409  

    ISSN: 0169-1864

    eISSN: 1568-5535

  272. Visuomotor architecture for high-speed robot control Peer-reviewed

    K Hashimoto, A Namiki, M Ishikawa

    CONTROL AND MODELING OF COMPLEX SYSTEMS 323-337 2003

  273. Improving camera displacement estimation in eye-in-hand visual servoing: a simple strategy Peer-reviewed

    G Chesi, K Hashimoto

    2003 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3, PROCEEDINGS 3911-3916 2003

    ISSN: 1050-4729

  274. A switching control law for keeping features in the field of view in eye-in-hand visual servoing Peer-reviewed

    G Chesi, K Hashimoto, D Prattichizzo, A Vicino

    2003 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3, PROCEEDINGS 3929-3934 2003

    ISSN: 1050-4729

  275. Effects of camera calibration errors on static-eye and hand-eye visual servoing Peer-reviewed

    G Chesi, K Hashimoto

    ADVANCED ROBOTICS 17 (10) 1023-1039 2003

    DOI: 10.1163/156855303322554409  

    ISSN: 0169-1864

    eISSN: 1568-5535

  276. A review on vision-based control of robot manipulators Peer-reviewed

    Koichi Hashimoto

    Advanced Robotics 17 (10) 969-991 2003

    Publisher:

    DOI: 10.1163/156855303322554382  

    ISSN: 0169-1864

    eISSN: 1568-5535

  277. Static-eye against hand-eye visual servoing

    Graziano Chesi, Koichi Hashimoto

    Proceedings of the IEEE Conference on Decision and Control 3 2854-2859 2002/12/01

    ISSN: 0191-2216

  278. A self-calibrating technique for visual servoing

    Graziano Chesi, Koichi Hashimoto

    Proceedings of the IEEE Conference on Decision and Control 3 2878-2883 2002/12/01

    ISSN: 0191-2216

  279. Keeping Features in the Camera's Field of View: a Visual Servoing Strategy Peer-reviewed

    G. Chesi, K. Hashimoto, D. Prattichizzo, A. Vicino

    15th Int. Symp. on Mathematical Theory of Networks and Systems 2002/08

  280. Handy and Clean Realtime Operating Systems(Questions and Answers)

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 46 (10) 648-649 2002

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.46.10_648  

    ISSN: 0916-1600

    eISSN: 2424-1806

  281. A mode switching estimator for visual servoing

    K Hashimoto, K Nagahama, T Noritsugu

    2002 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS I-IV, PROCEEDINGS 2 1610-1615 2002

    DOI: 10.1109/ROBOT.2002.1014773  

    ISSN: 1050-4729

  282. A mode switching estimator for visual servoing Peer-reviewed

    K Hashimoto, K Nagahama, T Noritsugu

    2002 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS I-IV, PROCEEDINGS 1610-1615 2002

  283. A self-calibrating technique for visual servoing Peer-reviewed

    G Chesi, K Hashimoto

    PROCEEDINGS OF THE 41ST IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 2878-2883 2002

    ISSN: 0743-1546

  284. Static-eye against hand-eye visual servoing Peer-reviewed

    G Chesi, K Hashimoto

    PROCEEDINGS OF THE 41ST IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 2854-2859 2002

    ISSN: 0743-1546

  285. Prediction and Sensitivity in Visual Servo Invited Peer-reviewed

    橋本浩一

    計測と制御 40 (9) 630-635 2001/09

    Publisher: The Society of Instrument and Control Engineers

    DOI: 10.11499/sicejl1962.40.630  

    ISSN: 0453-4662

    eISSN: 1883-8170

  286. User's Viewpoint Based Gesture Generation Peer-reviewed

    Y. Yagi, M. Hiramatsu, K. Hashimoto, M. Yachida

    32nd Int. Symposium on Robotics 568-573 2001/04

  287. Toward automated inspection of textile surfaces: Removing the textural information by using wavelet shrinkage Peer-reviewed

    H Fujiwara, Z Zhang, K Hashimoto

    2001 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS I-IV, PROCEEDINGS 3529-3534 2001

    DOI: 10.1109/ROBOT.2001.933164  

    ISSN: 1050-4729

  288. A visuomotor control architecture for high-speed grasping Peer-reviewed

    K Hashimoto, A Namiki, M Ishikawa

    PROCEEDINGS OF THE 40TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-5 15-20 2001

    ISSN: 0743-1546

  289. Visual Feedback Control of Cart based on Path Planning in Image Plane Peer-reviewed

    HASHIMOTO Koichi, SO Teruhito, NORITSUGU Toshiro

    Transactions of the Japan Society of Mechanical Engineers. Series C. 66 (652) 3984-3990 2000/12/25

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaic.66.3984  

    ISSN: 0387-5024

    eISSN: 1884-8354

  290. Potential switching control in visual servo

    Koichi Hashimoto, Toshiro Noritsugu

    Proceedings - IEEE International Conference on Robotics and Automation 3 2765-2770 2000/12/03

    ISSN: 1050-4729

  291. Potential Switching Control in Visual Servo Peer-reviewed

    HASHIMOTO Koichi, TANAKA Kouhei, NORITSUGU Toshiro

    計測自動制御学会論文集 36 (8) 660-667 2000/08/31

    Publisher: The Society of Instrument and Control Engineers

    DOI: 10.9746/sicetr1965.36.660  

    ISSN: 0453-4654

    eISSN: 1883-8189

    More details Close

    This paper discusses potential and stable region problems in feature-based visual servoing. Visual servoing controllers proposed so far are valid only for the features in the neighborhood of the reference features. For initial features far from the reference may converge to a feature set that is different from the reference. Even worse, for some special cases the camera moves away from the reference position. In this paper, the visual servoing is considered as a potential minimization problem whose potential being squared error of the features. Stable region is visualized by using the potential and artificial potential switching control is proposed to enlarge the stable region.

  292. Potential Switching Control in Visual Servo Peer-reviewed

    K. Hashimoto, T. Noritsugu

    IEEE Int. Conf. on Robotics and Automation 3 2765-2770 2000/04

    DOI: 10.1109/ROBOT.2000.846446  

  293. Visual Servo Systems with RT-Linux Invited Peer-reviewed

    橋本浩一

    画像ラボ 11 (4) 13-17 2000/04

  294. Visual servoing based on object motion estimation

    K Nagahama, K Hashimoto, T Noritsugu, M Takaiawa

    2000 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2000), VOLS 1-3, PROCEEDINGS 1 245-250 2000

    DOI: 10.1109/IROS.2000.894612  

  295. Potential problems in visual servo

    K Hashimoto, K Tanaka, T Noritsugu

    IECON 2000: 26TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1-4 1 2189-2194 2000

    DOI: 10.1109/IECON.2000.972615  

    ISSN: 1553-572X

  296. Potential problems and switching control for visual servoing

    K Hashimoto, T Noritsugu

    2000 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2000), VOLS 1-3, PROCEEDINGS 1 423-428 2000

  297. Visual servoing based on object motion estimation Peer-reviewed

    K Nagahama, K Hashimoto, T Noritsugu, M Takaiawa

    2000 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2000), VOLS 1-3, PROCEEDINGS 245-250 2000

  298. Potential problems and switching control for visual servoing Peer-reviewed

    K Hashimoto, T Noritsugu

    2000 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS 2000), VOLS 1-3, PROCEEDINGS 423-428 2000

  299. Enlargement of stable region in visual servo Peer-reviewed

    K Hashimoto, T Noritsuga

    PROCEEDINGS OF THE 39TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-5 3927-3932 2000

    ISSN: 0191-2216

  300. Mathematical Modeling of Yoyo and an Implementation of Robotic Yoyo Based on Visual Feedback Peer-reviewed

    HASHIMOTO Koichi, NORITSUGU Toshiro

    Transactions of the Institute of Systems, Control and Information Engineers 12 (10) 633-638 1999/10/15

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS (ISCIE)

    DOI: 10.5687/iscie.12.633  

    ISSN: 1342-5668

    eISSN: 2185-811X

    More details Close

    Yoyo is a simple toy but it has complicated dynamical characteristics. This paper describes a model of the yoyo suitable for feedback control and a visual feedback control scheme based on this model. The validity of the model and the control scheme is evaluated by the simulations and the experiments on PUMA 560.

  301. An Implementation of Visual Servo System on RT-Linux Peer-reviewed

    HASHIMOTO Koichi, NORITSUGU Toshiro

    Journal of the Robotics Society of Japan 17 (5) 685-688 1999/07/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.17.685  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    This paper describes the implementation issues of visual servo controller on a Linux-based real-time operating system. The Linux operating system is a Unix-like multi-user multi-task operating system and it is distributed freely. The real-time linux module adds a capability for hard real-time functionality, that is necessary for robot control, to Linux. Also a graphical user interface has been implemented on the basis of X Window System and Qt library. The implementation issues and some experimental data are presented. Discussion on the real-time control against the disturbance loads such as optical flow computation and heavy background processes are given.

  302. Observer-based Visual Servoing Peer-reviewed

    K. Hashimoto

    Control in Robotics and Automation 1999/02

  303. Visual servoing with linearized observer

    K Hashimoto, T Noritsugu

    ICRA '99: IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-4, PROCEEDINGS 1 263-268 1999

    ISSN: 1050-4729

  304. Visual servoing with linearized observer Peer-reviewed

    K Hashimoto, T Noritsugu

    ICRA '99: IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-4, PROCEEDINGS 263-268 1999

  305. Design of a Robotic System that Performs Yoyo Peer-reviewed

    K. Hashimoto, T. Noritsugu

    3rd Int. Conf. Advanced Mechatronics 886-891 1998/08

  306. Visual Navigation of Nonholonomic Car without Dead Reckoning Peer-reviewed

    K. Hashimoto, T. Noritsugu

    3rd Int. Conf. Advanced Mechatronics 235-240 1998/08

  307. Improving the Performance of Visual Servo Systems by using Sensitivity Peer-reviewed

    K. Hashimoto, T. Noritsugu

    3rd Int. Conf. Advanced Mechatronics 241-246 1998/08

  308. Visual Servoing with Redundant Features Peer-reviewed

    HASHIMOTO Koichi, AOKI Atsuhito, NORITSUGU Toshiro

    Journal of the Robotics Society of Japan 16 (3) 384-390 1998/04/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.16.384  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    This paper presents how the control performance of the feature-based visual servo system is improved by utilizing the redundant features. It also proves the effectiveness of the redundant features to increase the accuracy of the visual servo system by using the smallest singular value of a matrix called image Jacobian. Real time experiments on a PUMA 560 manipulator show usefulness of the redundant features to improve the performance.

  309. Performance and sensitivity in visual servoing

    K Hashimoto, T Noritsugu

    1998 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-4 3 2321-2326 1998

    ISSN: 1050-4729

  310. Performance and sensitivity in visual servoing Peer-reviewed

    K Hashimoto, T Noritsugu

    1998 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-4 2321-2326 1998

    ISSN: 1050-4729

  311. Visual tracking of redundant features

    Koichi Hashimoto, Atsuhito Aoki, Toshiro Noritsugu

    IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 51 1997/12/01

  312. Position Control of a Car with Visual Servo Peer-reviewed

    K. Hashimoto, T. Noritsugu

    2nd Asian Control Conference .III-343-346 1997/07

  313. Visual Tracking of Redundant Features Peer-reviewed

    K. Hashimoto, A. Aoki, T. Noritsugu

    IEEE/ASME Int. Conf. on Advanced Intelligent Mechatronics '97 1997/06

  314. Visual Servoing of Nonholonomic Cart Peer-reviewed

    K. Hashimoto, T. Noritsugu

    1997 IEEE Int. Conf. Robotics and Automation 1719-1724 1997/04

  315. Visual servoing with hand-eye manipulator - Optimal control approach Peer-reviewed

    K Hashimoto, T Ebine, H Kimura

    IEEE TRANSACTIONS ON ROBOTICS AND AUTOMATION 12 (5) 766-774 1996/10

    DOI: 10.1109/70.538981  

    ISSN: 1042-296X

  316. Observer-based Control for Visual Servoing Peer-reviewed

    K. Hashimoto, T. Noritsugu

    1996 IFAC World Congress 453-158 1996/07

  317. Observer-based Visual Servoing with Redundant Features Peer-reviewed

    K. Hashimoto, T. Noritsugu

    MTNS-96 1996/07

  318. Robotic Yoyo based on Visual Feedback Peer-reviewed

    K. Hashimoto, T. Noritsugu

    1996 IFAC World Congress C 61-66 1996/06

    Publisher:

    DOI: 10.1016/s1474-6670(17)57802-7  

    ISSN: 1474-6670

  319. Intelligent Robotics. Visual Servoing. Invited Peer-reviewed

    HASHIMOTO Koichi

    Journal of The Society of Instrument and Control Engineers 35 (4) 282-285 1996/04/10

    Publisher: The Society of Instrument and Control Engineers

    DOI: 10.11499/sicejl1962.35.4_282  

    ISSN: 0453-4662

    eISSN: 1883-8170

  320. Modelling and control of robotic yoyo with visual feedback

    K Hashimoto, T Noritsugu

    1996 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, PROCEEDINGS, VOLS 1-4 3 2650-2655 1996

    ISSN: 1050-4729

  321. Visual servoing with hand-eye manipulator - Optimal control approach

    Koichi Hashimoto, Takumi Ebine, Hidenori Kimura

    IEEE Transactions on Robotics and Automation 12 (5) 766-774 1996

    DOI: 10.1109/70.538981  

    ISSN: 1042-296X

  322. Modelling and control of robotic yoyo with visual feedback Peer-reviewed

    K Hashimoto, T Noritsugu

    1996 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, PROCEEDINGS, VOLS 1-4 2650-2655 1996

    ISSN: 1050-4729

  323. Visual servoing with redundant features Peer-reviewed

    K Hashimoto, A Aoki, T Noritsugu

    PROCEEDINGS OF THE 35TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 2482-2483 1996

    ISSN: 0191-2216

  324. Visual Servoing : Nonlinear Observer Approach Peer-reviewed

    HASHIMOTO Koichi, KIMURA Hidenori

    Journal of the Robotics Society of Japan 13 (7) 986-993 1995/10/01

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.13.986  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    The visual servo system is a robotic servo mechanism that incorporates the vision sensor in the feedback loop. The conventional static look and move scheme is not suitable for visual servoing because the visual servoing is used mainly in dynamically chaning environments. Although the dynamic couplings exist between the robot and the camera, previously proposed schemes neglected the robot dynamics. Therefore, they are not sufficient for real-time dynamic visual servoing. This paper proposes a nonlinear controller and a nonlinear observer for the visual servo system. Also a consideration on the tracking condition is given. The nonlinear controller compensates the robot and camera characteristics. The nonlinear observer estimates the object velocity and predicts the object motion. The observer-based control scheme is proved to be asymptotically stabile. Moreover, the effectiveness of the nonlinear observer approach is verified by simulations and experiments on a two link direct drive robot.

  325. Visual Servoing - Nonlinear Control Approach - Peer-reviewed

    HASHIMOTO Koichi, INOUE Takahiro, KIMURA Hidenori

    Journal of the Robotics Society of Japan 13 (2) 263-269 1995/03/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.13.263  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    This paper proposes a visual feedback control scheme for an eye-in-hand robot. Previous visual feedback schemes treated the robot as an ideal device to generate the desired motion of the robot hand and hand-mounted camera. However, they are not suffitient for high speed tasks because the robot dynamics is neglected. This paper proposes a nonlinear model-based scheme which compensates the robot dynamics. Asymptotic stability of the proposed scheme is proved. Also the effectiveness of the nonlinear approach is verified by simulations and experiments on a two link direct drive robot.

  326. Visual servoing with nonlinear observer

    K HASHIMOTO, H KIMURA

    PROCEEDINGS OF 1995 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3 1 484-489 1995

    ISSN: 1050-4729

  327. Visual servoing with nonlinear observer Peer-reviewed

    K HASHIMOTO, H KIMURA

    PROCEEDINGS OF 1995 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3 484-489 1995

    ISSN: 1050-4729

  328. Visual Feedback Control Based on H^∞ Control Theory

    OGURA Saori, EBINE Takumi, HASHIMOTO Koichi, KIMURA Hidenori

    計測自動制御学会論文集 30 (12) 1505-1511 1994/12/31

    Publisher: 計測自動制御学会

    DOI: 10.9746/sicetr1965.30.1505  

    ISSN: 0453-4654

    eISSN: 1883-8189

    More details Close

    This paper proposes a robust control scheme for the robotic visual feedback control. The visual feedback control system is regarded as the motion control system based on the image information obtained from the camera mounted on the robot end-point. Two ways of visual feedback control shame, namely position-based and feature-based have been proposed. The feature-based scheme uses the object image feature directly without computing the object 3D position and orientation. In this paper the plant is represented in state space with the state being the object features, which is linearized around the desired state to obtain a linear time-invariant system. The modeling error due to the linearization is regarded as a multiplicative plant perturbation. The robustly stabilizing controller is obtained by solving a mixed sensitibity H problem. Real-time experimental results on PUMA560 are also presented to show the effectiveness of the proposed method.

  329. Visual Feedback Control ---From Static to Dynamic Invited Peer-reviewed

    橋本浩一

    システム/制御/情報 38 (12) 659-665 1994/12/15

    Publisher:

    ISSN: 0916-1600

  330. Visual Feedback Control Based on H.INF. Control Theory.

    小倉佐織, 海老根巧, 橋本浩一, 木村英紀

    計測自動制御学会論文集 30 (12) 1505-1511 1994/12

    DOI: 10.9746/sicetr1965.30.1505  

    ISSN: 0453-4654

  331. Visual Servoing - Optimal Control Approach - Peer-reviewed

    HASHIMOTO Koichi, EBINE Takumi, KIMURA Hidenori

    Journal of the Robotics Society of Japan 12 (5) 129-134 1994/07/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.12.773  

    ISSN: 0289-1824

    eISSN: 1884-7145

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    The visual servoing system is composed of an object and an eye-in-hand robot. The object is moving around the robot work space and the robot is tracking the object by using a visual sensor mounted on the hand. This paper proposes a control theoretic formulation for the visual servoing system. The system is modeled by the perspective transformation of the camera and the kinematic transformation of the robot. The system is linearized at the reference point yielding an MIMO time-invariant model. An optimal control approach is proposed to design a robust feedback controller. Controllability and stability of the system is also discussed. Realtime experiments on PUMA560 are carried out to evaluate and compare the proposed approach with previously proposed algorithms.

  332. Visual Servoing based on Adaptive Identifier Peer-reviewed

    K. Hashimoto, T. Inoue, H. Kimura

    1994 Japan/USA Symposium on Flexible Automation 1 39-42 1994/07

  333. DYNAMIC VISUAL SERVOING WITH NONLINEAR MODEL-BASED CONTROL Peer-reviewed

    K HASHIMOTO, H KIMURA

    AUTOMATIC CONTROL - WORLD CONGRESS 1993, VOL 3 639-642 1994

  334. H.INF. Control of Robot with Linearized Model.

    川端将司, 橋本浩一, 木村英紀

    日本機械学会論文集 C編 59 (566) 3151-3156 1993/10

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/kikaic.59.3151  

    ISSN: 0387-5024

    eISSN: 1884-8354

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    Dynamic models of mechanical manipulators consist of highly nonlinear coupled second-order differential equations. Linear time-invariant control laws which utilize the linear model of robot dynamics are often used for industrial robots because of the simplicity of the control algorithms. However, due to the fact that nonlinearity is not considered and uncertainity exeists in the manipulator models, linear time-invariant control schemes cannot achieve satisfactory control performance. Therefore, a control scheme which is robust against the errors caused by the linerization procedure is required. In this paper we propose an H control approach to the position control of the manipulator. The H controller is linear and time-invariant and it guarantees the closed-loop robustness against the modeling error. Simulations and experiments on the two-link direct-drive manipulator demonstrate the effectiveness of the proposed H control scheme.

  335. H-infinity Controller Design for Robust Manipulator Control Peer-reviewed

    K. Hashimoto, M. Kawabata, H. Kimura

    1992 Japan/USA Symposium on Flexible Automation 1992 591-594 1993/10

  336. Visual Servoing: Real-Time Control of Robot Manipulators Based on Visual Sensory Feedback Peer-reviewed

    K. Hashimoto ed

    World Scientific Series in Robotics and Automated Systems (7) 1993/10

    Publisher:

    DOI: 10.1142/1995   10.2322/tjsass.46.173_references_DOI_3uCpqflqNtTEq6v585GyXUGFb5o   10.2322/tjsass.48.213_references_DOI_3uCpqflqNtTEq6v585GyXUGFb5o  

    ISSN: 1793-0774

  337. LQ Optimal and Nonlinear Approaches to Visual Servoing Peer-reviewed

    K. Hashimoto, H. Kimura

    World Scientific Series in Robotics and Automated Systems (7) 165-198 1993/10

    Publisher:

  338. Dynamic Visual Servoing with Nonlinear Model-based Control Peer-reviewed

    K. Hashimoto, H. Kimura

    12th IFAC World Congress 9 405-408 1993/07

  339. REAL-TIME VISUAL SERVOING WITH TRANSPUTER NETWORK Peer-reviewed

    K HASHIMOTO, T EBINE, H KIMURA

    TRANSPUTER/OCCAM JAPAN 5 35 54-68 1993

    ISSN: 0925-4986

  340. FULL 3D VISUAL TRACKING WITH NONLINEAR MODEL-BASED CONTROL

    K HASHIMOTO, T EBINE, K SAKAMOTO, H KIMURA

    PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 3180-3184 1993

  341. FULL 3D VISUAL TRACKING WITH NONLINEAR MODEL-BASED CONTROL Invited Peer-reviewed

    K HASHIMOTO, T EBINE, K SAKAMOTO, H KIMURA

    PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 3180-3184 1993

  342. H∞ controller design for robust manipulator control

    Koichi Hashimoto, Masashi Kawabata, Hidenori Kimura

    Proceedings of the 1992 Japan - USA Symposium on Flexible Automation Part 1 (of 2); San Francisco, CA, USA; ; 13 July 1992 through 15 July 1992 1 591-594 1992/12

  343. Dynamic Visual Feedback Control for a Hand-Eye Manipulator Peer-reviewed

    K. Hashimoto, T. Ebine, H. Kimura

    1992 IEEE/RSJ Int. Conf. Intelligent Robots and Systems 3 1863-1868 1992/07

  344. H-infinity Model-based Robust Control of a Manipulator Peer-reviewed

    K. Hashimoto, T. Kimoto, M. Kawabata, H. Kimura

    1991 IEEE/RSJ Int. Conf. Intelligent Robots and Systems 1957-1602 1991/11

  345. Image-Based Dynamic Visual Servo for a Hand-Eye Manipulator Peer-reviewed

    K. Hashimoto, T. Kimoto, T. Ebine, H. Kimura

    Int. Symposium MTNS-91 609-614 1991/06

  346. MANIPULATOR CONTROL WITH IMAGE-BASED VISUAL SERVO

    K HASHIMOTO, T KIMOTO, T EBINE, H KIMURA

    1991 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3 3 2267-2272 1991

    ISSN: 1050-4729

  347. MANIPULATOR CONTROL WITH IMAGE-BASED VISUAL SERVO Peer-reviewed

    K HASHIMOTO, T KIMOTO, T EBINE, H KIMURA

    1991 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION, VOLS 1-3 2267-2272 1991

  348. AN IMPLEMENTATION OF A PARALLEL ALGORITHM FOR REAL-TIME MODEL-BASED CONTROL ON A NETWORK OF MICROPROCESSORS Peer-reviewed

    K HASHIMOTO, K OHASHI, H KIMURA

    INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH 9 (6) 37-47 1990/12

    ISSN: 0278-3649

  349. Cartesian-Space Nonlinear Feedback Control with a Parallel Processing System Peer-reviewed

    橋本浩一, 木元努, 大橋謙次, 赤井健二, 鹿児島昌之, 木村英紀

    日本ロボット学会誌 8 (1) 48-56 1990/02

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.8.48  

    ISSN: 0289-1824

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    The dynamic equations of a manipulator are modeled by a system of second-order nonlinear differential equations with its kinematic and dynamic parameters. On the basis of this model, the manipulator can be controlled in a strict way by compensating all dynamic torques/forces consist of inertial, centrifugal, Coriolis, and frictional effects. However, since these dynamic torques/forces are highly complex functions of joint positions and velocities, the computational burden for evaluating these torques is significant. Further, the Cartesian-space control, in which positions and velocities are controlled directly in Cartesian work space, requires considerable amount of additional computations for inverse kinematics. Hence it has been difficult to implement the realtime model-based control with conventional commercially available microprocessors.<BR>This paper presents a real-time implemetation scheme of Cartesian-space nonlinear feedback control based on a new parallel computation scheme called Resolved Newton-Euler algorithm. Some experiments on the basic three joints of the PUMA 560 manipulator are also reported by using a parallel processing system with multiple microprocessors. A sampling period of 0.79 msec is achieved and fairly good control performances are obtained.

  350. An Implementation of a Parallel Algorithm for Real-Time Model- Based Control on a Network of Microprocessors

    Koichi Hashimoto, Kenjo Ohashi, Hidenori Kimura

    The International Journal of Robotics Research 9 (6) 37-47 1990

    DOI: 10.1177/027836499000900604  

    ISSN: 1741-3176 0278-3649

  351. A NEW PARALLEL ALGORITHM FOR INVERSE DYNAMICS

    K HASHIMOTO, H KIMURA

    INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH 8 (1) 63-76 1989/02

    ISSN: 0278-3649

  352. A NEW PARALLEL ALGORITHM FOR INVERSE DYNAMICS Peer-reviewed

    K HASHIMOTO, H KIMURA

    INTERNATIONAL JOURNAL OF ROBOTICS RESEARCH 8 (1) 63-76 1989/02

    ISSN: 0278-3649

  353. An Adaptive Equalizer Based on Parallel Computation Scheme Peer-reviewed

    橋本浩一, 木村英紀

    電子通信学会論文誌 70 (5) 58-66 1987/05

  354. A Parallel Architecture for Recursive Least Square Method Peer-reviewed

    K. Hashimoto, H. Kimura

    Electronics and Communication in Japan, Part 1 70 (4) 1-11 1987/04

  355. A parallel architecture for recursive least square method

    Koichi Hashimoto, Hidenori Kimura

    Electronics and Communications in Japan (Part I: Communications) 70 (4) 1-11 1987

    DOI: 10.1002/ecja.4410700401  

    ISSN: 1520-6424 8756-6621

  356. An adaptive equalizer based on parallel computation scheme

    Koichi Hashimoto, Hidenori Kimura

    Electronics and Communications in Japan (Part I: Communications) 70 (5) 58-66 1987

    DOI: 10.1002/ecja.4410700506  

    ISSN: 1520-6424 8756-6621

  357. An adaptive equalizer based on parallel computation scheme Peer-reviewed

    Koichi Hashimoto, Hidenori Kimura

    Electronics and Communications in Japan (Part I: Communications) 70 (5) 58-66 1987

    DOI: 10.1002/ecja.4410700506  

    ISSN: 1520-6424 8756-6621

  358. A Parallel Architecture for Recursive Least Square Identification Peer-reviewed

    K. Hashimoto, H. Kimura

    IEEE Int. Conf. Acoustics, Speech, and Signal Processing 1185-1188 1986/04

  359. An adaptive equalizer based on parallel computation scheme.

    橋本浩一, 木村英紀

    電子通信学会論文誌 A 69 (3) p400-407 1986/03

    Publisher:

    ISSN: 0373-6091

  360. 逐次型最小2乗法の並列計算アーキテクチャ Peer-reviewed

    橋本浩一, 木村英紀

    電子通信学会論文誌 68 (11) p1148-1156 1985/11

    Publisher:

    ISSN: 0373-6091

Show all ︎Show first 5

Misc. 147

  1. Improving accuracy of position-based visual servo with online calibration

    TERAZONO Daigo, SHIBAYAMA Chihuyu, CHIBA Naoya, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2024 1P2-R02 2024

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2024.1p2-r02  

    eISSN: 2424-3124

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    Position-based visual servoing has the disadvantages of low initial calibration accuracy and sensitivity to noise such as environmental changes. Therefore, in order to enable highly accurate object tracking of position-based visual servoing considering disturbances, this study performs online calibration using the least-squares method during the operation of position-based visual servoing considering errors that occur during feature point extraction on images and calibration errors of the camera. The camera pose is calibrated using the least squares method during operation. This enables the position-based visual servoing to reach objects with high accuracy, considering the measurement errors.

  2. Human Relationship Recognition in Surveillance Views for Human Behavior Analysis

    Tanonwong Matus, Hashimoto Koichi

    Proceedings of the Japan Joint Automatic Control Conference 66 452-458 2023

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.66.0_452  

  3. Calibration of a galvanometric laser scanner for line-art projection in a dynamic scene

    Matsumoto Daigo, Kagami Shingo, Hashimoto Koich

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2023 2A2-H26 2023

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2023.2a2-h26  

    eISSN: 2424-3124

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    Calibaration of a galvanometric scanner is important in providing distortion-free line-art projections. In particular, accurate projection in a dynamic scene requires an efficient backward model that maps a target projection point to voltages applied to the scanner. However, most of existing calibration methods offer forward models, which are difficult to invert efficiently. In this study, we investigate two types of simple backward models. Through experiments, we argue that the model representing the voltages by polynomials in terms of the light direction vector components achieves high projection accuracies for a wide range of target depths, despite the fact that it must introduce an approximate optical center.

  4. カメラパラメータの誤差を考慮したマニピュレータの動作計画

    柴山千冬, 鏡慎吾, 千葉直也, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 41st 2023

  5. Reinforcement learning with incremental skill models: Extension to tool use as skills

    Ryota Yashima, Akihiko Yamaguchi, Koichi Hashimoto

    2023 IEEE/SICE International Symposium on System Integration, SII 2023 1-8 2023

    Publisher: IEEE

    DOI: 10.1109/SII55687.2023.10039431  

  6. Advances in Antiviral Therapy for Subacute Sclerosing Panencephalitis

    Koichi Hashimoto, Mitsuaki Hosoya

    Molecules 26 (2) 427 2021/01/15

    Publisher: MDPI AG

    DOI: 10.3390/molecules26020427   10.1016/j.jneuroim.2021.577656_references_DOI_4f7ud2flsgCOwenL4cN5TxKuRrX  

    eISSN: 1420-3049

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    <jats:p>Subacute sclerosing panencephalitis (SSPE) is a late-onset, intractable, and fatal viral disease caused by persistent infection of the central nervous system by a mutant strain of the measles virus. Ribavirin intracerebroventricular therapy has already been administered to several SSPE patients in Japan based on fundamental and clinical research findings from our group, with positive therapeutic effects reported in some patients. However, the efficacy of this treatment approach has not been unequivocally established. Hence, development of more effective therapeutic methods using new antiviral agents is urgently needed. This review describes the current status of SSPE treatment and research, highlighting promising approaches to the development of more effective therapeutic methods.</jats:p>

  7. In-hand manipulation by a robot hand equipped with friction-variable surface and vision-based tactile sensor

    SUZUKI Yoshiyuki, YAMAGUCHI Akihiko, NOJIRI Seita, WATANABE Tetsuyou, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021 1P1-J01 2021

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2021.1p1-j01   10.1109/irc52146.2021.00010_references_DOI_OC4bC52o3tLfNNJnxIsAWhXWNPW  

    eISSN: 2424-3124

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    We explore a control method of a robot hand where the CAVS mechanism is introduced on the fingers to change the contact friction. A vision-based tactile FingerVision is introduced under CAVS, with which the hand can sense slippage and orientation of grasped objects. We use this robot hand in controlling the orientation of a grasped object by slipping it on purpose with the gravity. This paper reports the preliminary results of comparison of control with and without CAVS.

  8. Debugging method of model-based reinforcement learning for complex dynamics structures

    Yashima Ryota, Yamaguchi Akihiko, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021 1A1-F05 2021

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2021.1a1-f05  

    eISSN: 2424-3124

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    In this study, we explore a systematic debugging method for model-based reinforcement learning where a library of skills is introduced. When the performance (learning speed, obtained quality of behavior) of model-based reinforcement learning is not sufficient, identifying the reason is difficult especially when the dynamics are complicated such as liquid pouring. In our previous work, we introduced a library of skills in reinforcement learning of such complicated tasks. We think that the use of a skill library is also beneficial to investigate the performance issues since we can test each subset of skills separately. Our goal is making a systematic debugging way of reinforcement learning based on this idea. This paper reports a preliminary development toward this goal where we repeatedly increase and decrease the complexity of a subtask to make debug easier like curriculum learning until we can obtain sufficient results with the original task. We conducted simulation experiments of liquid pouring to investigate this approach. The results show a performance improvement.

  9. Detection of human and birds using a fulldome camera

    NABESHIMA Eishu, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021 2P1-M06 2021

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2021.2p1-m06  

    eISSN: 2424-3124

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    The fulldome camera is a camera that can capture images in all directions, including up and down, from the shooting point in a single shot. In this study, we aim to detect people and birds in an image taken by a fulldome camera. As a result, we can detect small people in the image by dividing the image into small parts. We also try to detect birds, but it is difficult to detect them. In the future, we aim to make bird datasets and detect them with high accuracy.

  10. LTMスパース推定による三次元計測の白飛び対応とばら積みピッキングロボットへの応用—Introductions of Sparse Estimation under Saturated Condition for 3D Measurement and Its Application for Bin-Picking Robot—特集 工場・物流倉庫の自動化に貢献するロボットビジョン&三次元計測技術(1)

    千葉 直也, 伊東 秀謹, 橋本 浩一

    画像ラボ / 画像ラボ編集委員会 編 31 (11) 41-47 2020/11

    Publisher: 日本工業出版

    ISSN: 0915-6755

  11. 生物のナビゲーションに学ぶ(第16回)トラジェクトリを考える

    橋本 浩一

    遺伝 : 生物の科学 74 (6) 700-707 2020/11

    Publisher: エヌ・ティー・エス

    ISSN: 0387-0022

  12. 経路選択モデリングによる大規模な人流シミュレーションの再現性向上

    西田 遼, 大西 正輝, 野田 五十樹, 橋本 浩一

    システム制御情報学会研究発表講演会講演論文集 64 498-503 2020/05

    Publisher: システム制御情報学会

  13. Anomaly Detection of Injection Molding Machine Using Mold Clamping Force Changes

    Naganuma Tsuneo, Hashimoto Koichi

    Seikei-Kakou 32 (4) 134-137 2020/04/20

    Publisher: The Japan Society of Polymer Processing

    DOI: 10.4325/seikeikakou.32.134   10.20965/ijat.2021.p0689_references_DOI_MxBJ0aVLdzosYcFgs3Qbq0VNvaW  

    ISSN: 0915-4027

    eISSN: 1883-7417

  14. Relationship between Degree of Freedom of Robot Hands and Manipulation Capabilities

    SUZUKI Yoshiyuki, YAMAGUCHI Akihiko, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2020 2A2-K02 2020

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2020.2a2-k02  

    eISSN: 2424-3124

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    We explore designing a guideline of robotic hands that can perform a range of manipulation tasks with minimum mechanical complexities. Referring to the analysis of human hand movement, we analyze finger-independent movement requirements for each manipulation task, and robotic hands that are capable of those movements. This paper reports a preliminary version of these analyses and its verification with two robotic hands that have different mechanisms.

  15. A Low-Latency Display Method for Motion-Adaptive Projecton with a DMD Projector Peer-reviewed

    Oshiro Wakana, Kagami Shingo, Hashimoto Koichi

    Transactions of the Virtual Reality Society of Japan 25 (2) 108-116 2020

    Publisher: THE VIRTUAL REALITY SOCIETY OF JAPAN

    DOI: 10.18974/tvrsj.25.2_108  

    ISSN: 1344-011X

    eISSN: 2423-9593

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    Low-latency projection is a key technology for fast motion-adaptive projection. Digital Micromirror Devices (DMDs) are widely used for this purpose because they enable high frame rate projection of binary patterns, although additional techniques are needed to realize projection of multi-valued images. This paper proposes a low-latency projection method, Binary Frame Warping, with which displayed patterns are warped at the binary pattern rate instead of the video frame rate. Experimental results suggest that the proposed method applied to 60-fps video input offers perceived image quality comparable with that offered by over 500-fps projection.

  16. Study on the calibration method using the geometric errors on active stereo method

    ITO Hidechika, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2020 1P2-L12 2020

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2020.1p2-l12  

    eISSN: 2424-3124

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    The purpose of this study is to improve the three-dimensional measurement accuracy in active stereo method. We propose a method to modify calibration parameters by non-linear optimization based on the error on euclidean space. The cost function in the optimization uses geometric constraints calculated based on euclidean coordinates of the feature points on the target. The accuracy of the proposed method was verified by the experiment. As a result, that the measurement accuracy was improved only in parts of the measurement regions was confirmed . By investigating the relationship between the spatial distribution of feature points and the measurement area, that the distribution affected the measurement accuracy was suggested.

  17. Environmental design by behavior modeling and simulation for effective guidance

    NISHIDA Ryo, ONISHI Masaki, NODA Itsuki, HASHIMOTO Koichi

    Proceedings of the Annual Conference of JSAI JSAI2020 2C4OS7a03-2C4OS7a03 2020

    Publisher: The Japanese Society for Artificial Intelligence

    DOI: 10.11517/pjsai.jsai2020.0_2c4os7a03  

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    In large-scale events, guidance is performed for easing congestion. Moreover, several studies on optimization ofguidance has been reported. Many existing studies assume that people follow guidance, but in fact some peopledo not follow guidance. It is presumed that factors other than guidance are involved as reasons for not followingthe guidance. In this study, we estimate the factors that induce non-following of guidance by behavioral modeling.Then we verify that the guidance following rate can be improved by manipulating the factors by changing theenvironment using a pedestrian flow simulation.

  18. Light Transport Matrixのスパース推定を用いた三次元計測・材質推定 : 金属物体・半透明物体に対応した三次元計測法と材質推定応用—3D Measurement and Material Estimation by estimating Light Transport Matrix

    千葉 直也, 橋本 浩一

    検査技術 / 検査技術編集委員会 編 24 (10) 14-19 2019/10

    Publisher: 日本工業出版

    ISSN: 1342-9825

  19. Low-Latency Interaction with Large Displays Using a Handheld High-Speed Projector

    2019 434-437 2019/09/13

    Publisher: 情報処理学会

  20. ロボット Light Transport Matrix(LTM)推定による三次元計測法とその高速化手法—3D Measurement via Light Transport Matrix (LTM) Estimation and Its Speed-up Approaches

    千葉 直也, 橋本 浩一

    画像ラボ / 画像ラボ編集委員会 編 30 (8) 6-11 2019/08

    Publisher: 日本工業出版

    ISSN: 0915-6755

  21. Analyzing correlation between gulls physical features and movement dynamics

    NABESHIMA Eishu, ARDAKANI Ilya, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019 2P2-E06 2019

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2019.2p2-e06  

    eISSN: 2424-3124

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    In this paper, we analyze the relationship among physical feature data and sensor data (GPS trajectory data, accelerometer sensor data, pressure sensor data) focused on marine birds ’flying state. In tracking animals ’behavior to search a special behavior, we want to put an animal which do the behavior to GPS and acc sensor. We analyze 17 sea gulls (umineko). We use the birds ’age, mass, head and wing as physical feature data and we also use their flying count, flying time, frequency, amplitude and height difference as flying state data. As a result, we conclude that there is no significant relationship between physical feature data and flying state data.

  22. Light Transport Matrix(LTM)推定による三次元計測法とその高速化手法

    千葉直也, 橋本浩一

    画像ラボ 30 (8) 2019

    ISSN: 0915-6755

  23. Light Transport Matrixのスパース推定を用いた三次元計測・材質推定 金属物体・半透明物体に対応した三次元計測法と材質推定応用

    千葉直也, 橋本浩一

    検査技術 24 (10) 2019

    ISSN: 1342-9825

  24. 投影型バーチャルエアホッケーにおける打突感提示のための視覚的刺激の検討

    島森, 洸, 鏡, 慎吾, 橋本, 浩一

    エンタテインメントコンピューティングシンポジウム2018論文集 2018 273-275 2018/09/06

    Publisher: 情報処理学会

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    プロジェクタによる投影像として表示されるパックを物理的なマレットで打つバーチャルエアホッケーにおいて、より高い臨場感を得るための打突感提示方法について検討する。バイブレータによる振動やソレノイドによる撃力をマレット内で発生させる方法が考えられるが、そこにプロジェクタによる視覚刺激を加えることで、より高い打突感や指向性を付与できる可能性がある。本発表では、システム実装および適切な視覚刺激を設計するための評価実験について報告する。

  25. 生物ナビゲーションのシステム科学~生物移動情報学の創生~

    橋本浩一

    映像情報メディア学会誌 72 (4) 521‐528-528 2018/07/01

    Publisher: The Institute of Image Information and Television Engineers

    DOI: 10.3169/itej.72.521  

    ISSN: 1342-6907

    eISSN: 1881-6908

  26. Social Force Modelを用いた目的地選択可能な歩行者モデルの提案—Destination Selectable Pedestrian Model using Social Force Model

    西田 遼, 橋本 浩一, 大西 正輝

    システム制御情報学会研究発表講演会講演論文集 62 5p 2018/05

    Publisher: 京都 : システム制御情報学会

  27. 三次元構造マッチングを用いたペプチド立体構造探索手法の構築

    小松, 大和, 千葉, 直也, 橋本, 浩一

    第80回全国大会講演論文集 2018 (1) 933-934 2018/03/13

    Publisher: 情報処理学会

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    ペプチドはアミノ酸の配列により非常に多様で複雑な立体構造を取り、様々な性質を発現する。そのため、多様なペプチドライブラリから目的の性質を持つペプチドを探索する研究が行われてきた。しかし、化学反応に伴う効率等の問題から、物理的・時間的制約が生じていた。本研究ではシミュレーションにより擬似的に生成したペプチドと探索対象の立体構造間で、三次元点群ベースの物体検出に用いられている三次元構造マッチング手法を応用することで、上記の制約を受けずにペプチドを探索する方法論を目指した。具体的目標として、未だ発見されていない「酵素活性を持つペプチド」の探索を行った。本発表ではその方法論構築の経過について報告する。

  28. In-hand pose estimation with FingerVision

    Takayama Shintaro, Yamaguchi Akihiko, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 2A1-H14 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2018.2a1-h14  

    eISSN: 2424-3124

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    FingerVision is an optical multimodal sensor for robot grippers. This sensor is transparent, soft at the surface, covered with dotted-markers material, and a camera is mounted inside. By using this sensor, it is possible to estimate the contact pressure by tracking the markers on the surface, and to acquire the visual information of the nearby object. If object information could be acquired in-hand, it leads to a reduction in cycle time of work and so on. FingerVision has the potential to acquire various information of objects based on visual information. In this research, we propose a method for estimating the in-hand pose of a grasped object in order to present the possibility of acquiring object information with FingerVision.

  29. Vibration analysis for touch detection using a high speed camera

    Narita Shotaro, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 1P2-L17 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2018.1p2-l17  

    eISSN: 2424-3124

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    Recently projector and camera are miniaturized and improved, and it is expected that touch interaction with projection becomes more popular. Contrarily to existing methods using image information which require finding finger position itself in the images, we observe small vibration derived from touch using a high speed camera, and analyze the vibration to detect touch. Using machine learning techniques, we examine the presence or absence of touch from frequency components of the vibration.

  30. The proposal of the algorithm to track on each object against its deformation and brightness change

    Nozawa Toshiki, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 2P2-L03 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2018.2p2-l03  

    eISSN: 2424-3124

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    For all animals including human, migration is one of the most important activity to survive. In systems science of animal navigation filed[1], navigation is defined as a combination of destination setting, routing and control. Purpose in this filed is to observe, analyze and understand animal navigation to create a model of computation in their brains, and verify the model. Target in this filed includes micro navigation, like C.elegans, and macro navigation, like whales. C.elegans is one of the most popular model organisms. Tanimoto et. al.[4] found the relation between Dopamine–ergic neurons and feeding. To observe C.elegans, they developed robot microscope OSaKaBeN[5], but have not achieved to track on each cell yet[6]. We propose the algorithm to track on each object against its deformation and brightness change.

  31. 3D point cloud model reconstruction method by using multi–view 2D images and 3D point clouds

    TODA Yukihiro, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 2A1-I17 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2018.2a1-i17  

    eISSN: 2424-3124

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    This paper proposes a 3D point cloud model reconstruction method by using multi-view 2D images and 3D point clouds of an object. In order to reconstruct a point cloud of a 3D shape, point clouds registration is required. However, keypoints and correspondences between point clouds could not be detected using a shape with less feature. Therefore, we propose a method using 2D image-matching in order to overcome this problem. 2D image and 3D point cloud taken from the same view point of an object and utilized to find the correspondences between a point in 3D space and a position in the 2D image.

  32. A Fast Homography-Warping Full-Color Projector

    KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2018 2P2-I17 2018

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2018.2p2-i17  

    eISSN: 2424-3124

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    One of key challenges in projection-based interaction systems is adaptability to quick real-world motion. High-frame-rate DLP (Digital Light Processing) projectors have been applied to enabling such objectives, but none of them presented detailed investigations on projection of color images. This paper describes a 24-bit full-color projector that achieves over 2400-fps motion adaptability to a fast moving planar surface using single-chip DLP technology, which will be useful for projection mapping applications in highly dynamic scenes. The fast motion adaptability is achieved by a hardware accelerated homography warping engine embedded within the projector. An efficient color encoding scheme into mirror switching and light source modulation sequences is employed to offer better light utilization while maintaining quick response to motion. The developed projector can be interfaced with a host PC via standard HDMI and USB without need of high computational burden.

  33. weAtheR: Ambient display of weather information with AR technology

    Narita, Shotaro, Kagami, Shingo, Hashimoto, Koichi

    2017 357-358 2017/09/09

    Publisher: 情報処理学会

  34. Dynamic Interaction with Projected Contents by a High-Speed Projector

    Kagami, Shingo, Hashimoto, Koichi

    2017 406-407 2017/09/09

    Publisher: 情報処理学会

  35. A robotic microscope reveals the neural computation in worms for navigation

    KIMURA Kotaro, TANIMOTO Yuki, MIURA Takuya, WEN Chentao, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 2A2-Q05 2017

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2017.2a2-q05  

    eISSN: 2424-3124

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    National brain projects are being conducted in the US, EU, the major Asian countries etc, in which big brain data at the GB and TB levels are generated from many laboratories everyday. However, techniques to analyze these big data are very limited, which becomes one of the big problems in brain science. In order to establish a method of brain data analysis with a small brain and to apply the method to a larger brain eventually, we are analyzing the brain of a round worm, the nematode C. elegans. In this paper, we report a robot microscope system OSaCaBeN, which automatically tracks a behaving worm under a virtual odor gradient and measures its neural activity. Our integrated analyses of behavior and neural activity will reveal novel principles of brain computation during animal's navigation.

  36. Fast Implementation of a Virtual-Projection-based Interaction System

    Otobe Narifumi, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 2A1-I09 2017

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2017.2a1-i09  

    eISSN: 2424-3124

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    In recent years, interaction techniques with a display system using a handheld device such as a smartphone employing handheld projection as a metaphor, referred to as Virtual Projection, have been explored. However, typical implementations of such systems consist of video-rate cameras and liquid crystal displays, preventing them from achieving high responsiveness to quick motion of the handheld devices. In the meanwhile, high-speed cameras and high-speed projectors are becoming available, which will be useful to overcome these limitations. Our goal is to develop a fast Virtual-Projection-based interaction system with a small latency between the device motion and the display response so that we can investigate the effect of the latency on the usability. In this paper, we investigate vision processing algorithms for a Virtual Projection system to minimize the latency.

  37. Behavior estimation of Drosophila melanogaster

    NOZAWA Toshiki, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 2A2-Q04 2017

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2017.2a2-q04  

    eISSN: 2424-3124

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    Model organisms are used in biological research to understand how biological processes work, and fruit fly, Drosophila melanogaster, is one of the most popular model organisms. Recently many fly tracking tools are available. TPro is the one developed by our laboratory. In this work, we propose fly behavior classifier based on data form TPro. Our method can classify stop, walk, and jump behaviors.

  38. Model-less Object Detection in Bin Scene

    FUKUCHI Nobuaki, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 2A2-N07 2017

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2017.2a2-n07  

    eISSN: 2424-3124

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    Bin picking robot plays an important role in automating many field, such as logistics industry or manufacturing industry. One of the most important techniques of bin picking robot is object detection or pose estimation in bin scene. Usually, pose estimation is performed by utilizing model of the target. However, there are two cases that model is not available. One is that we can't construct model because target doesn't have fixed shape, for example, target is vegetable, fruit or other food made at factory. The other is that model is not prepared or model has different shape from the real target. In this paper, we address the first case and propose a method of object detection without its model. The target is in a bin scene and each has various shape. We evaluate proposed method in 18 scenes and show the effectiveness of the method.

  39. Pose Estimation for Random Bin Picking with Random Forest

    FUKUCHI Nobuaki, ARAI Shogo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2016 2A1-19b7 2016

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2016.2a1-19b7  

    eISSN: 2424-3124

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    This paper proposes a pose estimation method for random bin picking with random forest. Main contribution of the method consists of two parts. First, we provide novel 3D feature called cube based feature (CF) and pairs with segment based feature (PSF). To compute the proposed feature, it is not necessary to define the local coordinate system. Thus, the proposed 3D feature is strongly robust against measurement noise, which causes difficulty computing the local coordinate system with high repeatability. Second, we propose to utilize the random forest for correspondences finding between point cloud of scene and a model. Experimental results show that the proposed method can achieve high accuracy pose estimation of industrial parts.

  40. 3D point cloud model construction for industrial parts with few shape features

    TERASHIMA Yuto, ARAI Shogo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2016 2A1-19a4 2016

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2016.2a1-19a4   10.1299/jsmermd.2017.2a2-n11  

    eISSN: 2424-3124

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    A 3D point cloud model construction with keypoints has been widely utilized. In some cases, it is not suitable for industrial parts which consists of few shape features. We hypothesize that an object with few shape features are comprised of segments, and therefore propose the method for construction of a 3D point cloud model using segment information. First, segmentation is applied to a target point cloud and then two scenes are aligned using the segment information.

  41. Tracking of blended images with unknown mixing ratio

    GOTO Akifumi, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2016 2A1-19a1 2016

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2016.2a1-19a1  

    eISSN: 2424-3124

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    This paper describes a tracking method of blended images with unknown mixing ratio. We apply the Lucas-Kanade method to blended images to simultaneously estimate the warp and mixing ratio. Because its computational cost is too large for real-time tracking, we implement speeding-up techniques by partly adopting the inverse compositional approach. We implement speed up in reference to the Inverse compositional method. Experimental results of tracking images show effectiveness of the proposed method.

  42. A method of embedding imperceptible markers in a video for display-based mobile AR

    KUSANAGI Tsutomu, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2016 1A2-15a2 2016

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2016.1a2-15a2  

    eISSN: 2424-3124

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    In this paper, we propose a method of embedding augmented reality (AR) markers in a displayed video so that they are imperceptible to human eyes. Using a high-speed projector, we display a set of markers that change their positions so fast that human eyes cannot perceive them, while a camera with a sufficiently short exposure time is able to detect at least one marker in the image even if there is no means of synchronization between the projector and the camera. Details of the marker design with experimental results are presented. A simple AR application using the proposed method is also presented.

  43. 1A1-I04 The proposal for High Accurate Phase Shift

    Boshu Toshiki, Arai Shogo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2015 _1A1-I04_1-_1A1-I04_2 2015

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2015._1a1-i04_1  

    eISSN: 2424-3124

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    Phase shift method is one of the active 3D measurements. In this paper, we consider phase shift with a projector-camera system. Phase shift can reconstruct 3D points with sub pixel accuracy, that is one of main advantages for phase shift compared to the other active 3D measurements. On the other hand, this method assumes linearity between input brightness to a projector and intensity obtained by a camera. Thus measurement accuracy of phase shift depends on optical property for the projector, camera and especially a target object whose optical property is far from linearity. To solve this problem, we will propose high accuracy phase shift method for the target object with nonlinear optical property.

  44. 工業部品の認識と位置姿勢推定に関する研究

    房州俊樹, 荒井翔悟, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 32nd ROMBUNNO.1C2-04 2014/09/04

  45. 汎用ハンドを用いたマニピュレーションのための高性能ロボットビジョン技術開発

    橋本浩一, 荒井翔悟

    日本ロボット学会学術講演会予稿集(CD-ROM) 32nd ROMBUNNO.1C2-01 2014/09/04

  46. 位相シフト法によるばら積みボルトの認識とビンピッキング

    荒井翔悟, 原田智紀, 藤平敦, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 32nd ROMBUNNO.1C2-02 2014/09/04

  47. 人間‐マニピュレータ協働作業における高速3次元計測を用いたリアルタイム衝突回避

    古澤良和, 荒井翔悟, 橋本浩一

    ロボティクスシンポジア予稿集 19th 467-472 2014/03/13

    ISSN: 1881-7300

  48. 線虫の経験塩濃度依存的な行動を制御する神経回路の解明

    SATO HIROFUMI, KUNITOMO HIROFUMI, FEI XIANFENG, HASHIMOTO KOICHI, IINO YUICHI

    日本分子生物学会年会プログラム・要旨集(Web) 37th 1P-0685 (WEB ONLY) 2014

  49. 3A1-H07 Research on The Safety System for Human-Manipulator Cooperative Work(Robotics with Safety and Reliability)

    FURUSAWA Yoshikazu, ARAI Shogo, ITO Shogo, HASHIMOTO Koichi, TAKAHASHI Hiroshi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2014 (0) _3A1-H07_1-_3A1-H07_4 2014

    Publisher: 一般社団法人 日本機械学会

    DOI: 10.1299/jsmermd.2014._3a1-h07_1  

    eISSN: 2424-3124

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    In this paper, we focus on a safety system for human-manipulator cooperation works. The safety system is to avoid collision between the human and the manipulator for safe humanmanipulator cooperation work using a high speed perception system of the environment. First, new safety distance is defined because International Organization for Standardization (ISO) only lays down rules on the safety distance by sensor curtains. Our new safety distance shows that high sampling rate can improve safety for the cooperating works with human. Then, highspeed 3D measurement using volume intersection is introduced. Our system can reach 100 [Hz] sampling rate on 2.5 GHz Intel Core i5 PC. Finally, we explain collision avoidance algorithm. In the experiment, the manipulator was successfully able to avoid collision with the human.

  50. 3P1-X04 3D measurements by image feedback projection(3D Measurement/Sensor Fusion)

    Boshu Toshiki, Arai Shogo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2014 (0) _3P1-X04_1-_3P1-X04_4 2014

    Publisher: 一般社団法人 日本機械学会

    DOI: 10.1299/jsmermd.2014._3p1-x04_1  

    eISSN: 2424-3124

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    This paper focus on non-contacted 3D measurements with camera and projector system. 3D measurement technology projecting pattern needs calibration between camera and projector. But Calibration between camera and projector is more difficult and causes an error than stereo camera calibration. Accordingly, this paper constructed 3D measurement system without calibration between camera and projector. Moreover, by projecting pattern, this paper succeeded 3D measurement of target without pattern itself.

  51. 3P2-L05 Bin Picking of Bolts(Robots for Works (2))

    ARAI Shogo, HARADA Tomoki, TOUHEI Atushi, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2014 (0) _3P2-L05_1-_3P2-L05_3 2014

    Publisher: 一般社団法人 日本機械学会

    DOI: 10.1299/jsmermd.2014._3p2-l05_1  

    eISSN: 2424-3124

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    Robotic bin picking of small parts with metallic luster is a challenging task. This paper describes development of robotic bin picking for bolts with metallic luster. High accuracy measurement and estimation methods are presented based on highlight of bolts and the multi phase shift. Posture of bolts are estimated based on 3D points obtained by the multi phase shift. To reduce measurement error caused by metallic luster of bolts, we present an optical calibration between projector and cameras. A simple 1-DOF handling device called RAPiD is used for grasp of bolts. Developed robotic bin picking system provides 95% success picking rate.

  52. Position and Orientation Estimation of an Acceleration and Angular-Velocity Sensor with Help of Human Pose Information

    SHINDO Yasutaka, KAGAMI Shingo, HASHIMOTO Koichi

    IEICE technical report. ASN, Ambient intelligence and sensor networks 113 (38) 19-24 2013/05/16

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

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    We have been developing methods of identifying and tracking a person with an accelerometer of interest in a camera view. In this paper, we propose a method of estimating the body part at which an inertial (acceleration and angular velocity) sensor of interest is held as well as the posture of the inertial sensor by using the Kinect sensor as a vision sensor. The proposed method runs a particle filter that takes the inertial sensor data as inputs and Kinect-estimated joint motion as observation for each joint position detected by Kinect, and chooses the joint at which the estimated state best converges.

  53. Position and Orientation Estimation of an Acceleration and Angular-Velocity Sensor with Help of Human Pose Information

    Yasutaka Shindo, Shingo Kagami, Koichi Hashimoto

    2013 (4) 1-6 2013/05/09

    Publisher: Information Processing Society of Japan (IPSJ)

    ISSN: 0919-6072

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    We have been developing methods of identifying and tracking a person with an accelerometer of interest in a camera view. In this paper, we propose a method of estimating the body part at which an inertial (acceleration and angular velocity) sensor of interest is held as well as the posture of the inertial sensor by using the Kinect sensor as a vision sensor. The proposed method runs a particle filter that takes the inertial sensor data as inputs and Kinect-estimated joint motion as observation for each joint position detected by Kinect, and chooses the joint at which the estimated state best converges.

  54. 線虫用VR環境を用いた,神経回路の基本的動作メカニズムの解明

    木村幸太郎, 谷本悠生, FEI X, 橋本浩一

    自動制御連合講演会(CD-ROM) 56th ROMBUNNO.525 2013

  55. 2P1-Q04 Real time predictive motion display using a high-speed vision system : An air hockey system with predicted trajectory display(VR and Interface)

    ARAI Yusuke, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2012 "2P1-Q04(1)"-"2P1-Q04(4)" 2012/05/27

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2012._2p1-q04_1  

    eISSN: 2424-3124

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    High-speed vision systems, which provide high frame rate visual information in real time, are becoming widely used. Since the high-speed visual information is too fast for humans to recognize directly in real time, these systems are mainly used to control artificial systems such as robots. Contrary to this trend, we attempt to provide the high-speed visual information directly to humans so that they can respond to fast motional phenomena in real time. In this paper, we discuss the effect of an air hockey gaming system that displays predictive information of the puck trajectory by using a high-speed vision system. The results show that displaying the future trajectory of the puck significantly helps the assisted player. The results also suggested that humans optimize their strategy in utilizing the available predictive information depending on given tasks.

  56. 巻頭言:「システムインテグレーション最前線」について

    橋本 浩一, 妻木 勇一, 李 周浩, 平田 泰久

    計測自動制御学会論文集 48 (1) 1-1 2012

    Publisher: 公益社団法人 計測自動制御学会

    DOI: 10.9746/sicetr.48.1  

    ISSN: 0453-4654

    eISSN: 1883-8189

  57. 2A1-I11 Autonomous Flight of RC Helicopter with Vertical Disturbance(Aerial Robot and Mechatronics(1))

    Furusawa Yoshikazu, Aai Shogo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2012 (0) _2A1-I11_1-_2A1-I11_4 2012

    Publisher: 一般社団法人 日本機械学会

    DOI: 10.1299/jsmermd.2012._2a1-i11_1  

    eISSN: 2424-3124

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    This paper proposes autonomous flight control system of RC helicopter with wind disturbance. Autonomous RC helicopter is widely adopted in many fields such as surveillance, intelligence and rescue operations. Especially, it is expected that the super small-size RC helicopter is adopted in various environment. However, the low thrust and the light weight of the super small-size RC helicopter make it difficult to control the RC helicopter autonomously with wind disturbance. The relation between maximum takeoff weight of each helicopter and their corresponding difficulty of control with disturbance in previous works is given in this paper. To solve this problem, we present control law and conduct experiments for hovering flight with wind disturbance.

  58. 2P1-Q05 Investigation on Association of Accelerometer and Camera Measurements When Synchronously Moving Persons Are Observed(Intelligent and Robotic Room)

    SATO Shunichi, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2011 "2P1-Q05(1)"-"2P1-Q05(4)" 2011/05/26

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2011._2p1-q05_1  

    eISSN: 2424-3124

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    We have been developing methods of identifying moving objects and persons having an accelerometer of interest from a camera view. With our previous methods, it has been empirically pointed out that synchronously moving objects are often misidentified. In this paper, we first examine this pointing out through experiments of discriminating two synchronously walking persons, one of whom has the accelerometer and the other does not. Then we apply the coherence function to accomplishing the same discrimination problem. The experimental results show that the coherence function has higher discriminative ability than our previous methods, although it requires longer time to yield stable results.

  59. オンラインキャリブレーションされたカメラによるヘリコプターのホバリング制御

    松川隆典, 荒井翔悟, 橋本浩一

    システム制御情報学会研究発表講演会講演論文集(CD-ROM) 55th ROMBUNNO.T23-2 2011/05/17

  60. Investigation on Speeding Up of Accelerometer Detection in a Video Sequence

    2010 (2) 5p 2010/08

    Publisher: 情報処理学会

    ISSN: 1884-0930

  61. Investigation on Speeding Up of Accelerometer Detection in a Video Sequence

    MAKI Yuichi, KAGAMI Shingo, HASHIMOTO Koichi

    IEICE technical report 110 (130) 91-95 2010/07/08

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

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    We have been working on detecting an object with an accelerometer from many moving objects in a camera view. The previous method we proposed relied on color markers for visual tracking, which severely limited practical applicability. In this paper, aiming at removing dependency on specific knowledge of the object appearance as much as possible, we apply the detection method to the results of natural feature tracking within a camera view. We propose a method to speed up the computation for the detection so that numerous natural feature points can be handled ill real time. We also investigate a method to cope with natural features that are not always tracked continuously.

  62. Development and Application of Visual Servo Microscope

    Hashimoto Koichi, Maru Mitsunori, Obara Takeshi

    Proceedings of the Japan Joint Automatic Control Conference 53 275-275 2010

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.53.0.275.0  

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    Visual servo microscope is a microscope equipped with electrically controlled servo stage. It can measure the intra-cellular activity by canceling the cell motion. The paper presents the design and the implementation issues of the microscope. Also several applications will be given.

  63. Visual Servo-III : Robot Control Basics

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 54 (1) 34-42 2010

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.54.1_34  

    ISSN: 0916-1600

    eISSN: 2424-1806

  64. Visual Servo-IV : Position-based Visual Servo

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 54 (3) 117-123 2010

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.54.3_117  

    ISSN: 0916-1600

    eISSN: 2424-1806

  65. Visual Servo-V : Position-based Visual Servo

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 54 (5) 206-213 2010

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.54.5_206  

    ISSN: 0916-1600

    eISSN: 2424-1806

  66. Visual Servo-VI : Visual Tracking

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 54 (7) 264-273 2010

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.54.7_264  

    ISSN: 0916-1600

    eISSN: 2424-1806

  67. 視覚センサネットワークにおけるスケーラブルな視野接続推定

    近藤 真, 鏡 慎吾, 橋本 浩一

    電子情報通信学会技術研究報告. USN, ユビキタス・センサネットワーク : IEICE technical report 109 (248) 7-12 2009/10/15

    Publisher: 一般社団法人電子情報通信学会

    ISSN: 0913-5685

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    本論文では,多数の視覚センサ間で,ある2つのセンサが共通の事象を観測しているかどうかという視野接続関係を,画像特徴量に基づいて推定する方法について検討する.従来研究ではノード数が増加すると画像特徴量のデータ量が膨大になりネットワークの負荷が大きくなるという問題があった.本論文では特徴量空間を分割し対応づけの計算をノードごとに分散させて行うことで,データ通信量を大幅に低減しながら十分な精度で視野接続推定が可能であることを示す.

  68. ビジュアルフィードバック制御と今後

    橋本浩一

    日本ロボット学会誌 27 (4) 400-404 2009/05/15

    Publisher: The Robotics Society of Japan

    DOI: 10.7210/jrsj.27.400  

    ISSN: 0289-1824

    eISSN: 1884-7145

  69. 2A1-J02 Fluorescent microscope system to track C. elegans

    MARU Mitsunori, IGARASHI Yasunobu, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2009 (0) _2A1-J02_1-_2A1-J02_4 2009

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2009._2A1-J02_1  

    eISSN: 2424-3124

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    Many neuroscientists use C. elegans as a model organism to investigate neural functions. In order to evaluate neural activities in C. elegans, it is necessary to monitor Ca2+ concentration in neurons with a fluorescent microscope. However, it is difficult to observe C. elegans for a long time at a high magnification because of its movement. To solve this problem, we developed a microscope system which can track C. elegans and observe fluorescence emitted from fluorescent materials in C. elegans. As a result, we could continue to observe fluorescence emitted from GET introduced in a pharynx site of moving C.elegans for 30 seconds at 40x magnification.

  70. 1A1-D07 Weighted feature selection for visual servoing with occlusion recovery

    Matsukawa Takanori, Iwatani Yasushi, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2009 (0) _1A1-D07_1-_1A1-D07_2 2009

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2009._1A1-D07_1  

    eISSN: 2424-3124

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    This paper proposes a weighted feature selection technique for visual servoing with occlusion recovery. The proposed control algorithm selects a set of correctly extracted image features, and it estimates all image features from the correctly extracted image features. The control input signal is calculated by using the selected image features with weight in order to reduce discontinuities caused by the change of the selected set.

  71. 1A1-D21 3-D shape measurement using a high-speed projector-camera system for virtual haptization of an object surface

    TOMA Kota, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2009 (0) _1A1-D21_1-_1A1-D21_4 2009

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2009._1A1-D21_1  

    eISSN: 2424-3124

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    This paper reports real-time virtual haptization of, for example, a remote object surface based on highspeed 3-D shape measurement. With this system, the operator feels sense of touch as if following the object surface. We use a high-speed projector-camera system to realize real-time measurement, and a haptic device called PHAMToM to render virtual haptization. A dynamically changeable structured light is projected so that the projected slit ray intersects with a virtual touching point, which is determined by the stylus position of the haptic device. A camera image of this scene gives the positional relationship between the object surface and the virtual touching point. We use this relationship to generate force feedback such that the virtual touching point is piished back to the object surface.

  72. Visual Servo-I : What is Visual Servo?

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 53 (9) 411-416 2009

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.53.9_411  

    ISSN: 0916-1600

    eISSN: 2424-1806

  73. Visual Servo-II : Basics of Computer Vision

    HASHIMOTO Koichi

    SYSTEMS, CONTROL AND INFORMATION 53 (11) 476-483 2009

    Publisher: THE INSTITUTE OF SYSTEMS, CONTROL AND INFORMATION ENGINEERS

    DOI: 10.11509/isciesci.53.11_476  

    ISSN: 0916-1600

    eISSN: 2424-1806

  74. 2P2-B18 2D tracking of single micro-organism based on parallel level set method with intensity constraint

    Fei Xianfeng, Igarashi Yasunobu, Hashimoto Koichi

    2008 "2P2-B18(1)"-"2P2-B18(4)" 2008/06/06

    Publisher: The Japan Society of Mechanical Engineers

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    We propose a 2D microorganism tracking system using parallel level set method (LSM) and column parallel vision system (CPV). The proposed new energy function of LSM constrains the amount of light intensity inside detected object contours to control the number of detected objects. This algorithm is implemented in CPV system and computational time for each frame is 2 [ms], ap- proximately. Based on the single target detection and automated stage PD controlling, the single microorganism is tracked to be in the middle of visual field under a microscope. We demonstrated a tracking experiment for about 37 s which shows that a single paramecium can be kept tracking even if other paramecia appear in the visual field and contact with tracked paramecium.

  75. Identifying a Moving Object with an Accelerometer in a Stationary Camera View

    SHIGETA Osamu, KAGAMI Shingo, HASHIMOTO Koichi

    IEICE technical report 108 (43) 13-18 2008/05/22

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

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    This paper proposes a method for identifying an object with an accelerometer from many moving objects in a camera view. The camera and the accelerometer are connected with a network but not synchronized. To evaluate correlation despite the unknown time lag between them, NCC (Normalized Cross-Correlation) of the signals is computed. Since the coordinate system of the accelerometer is unknown, NCC is computed for the norms of the acceleration vectors, which are compensated for the gravitational acceleration component beforehand, obtained by the camera and the accelerometer. The experimental results show the proposed method successfully identified the person wearing the accelerometer from three walking people.

  76. A development of a tracking and fluorescence microscope system and a research for a spontaneous motility of a paramecium

    Obara Takeshi, Igarashi Yasunobu, Tsubokawa Hiroshi, Nakaoka Yasuo, Hashimoto Koichi

    Proceedings of the Japan Joint Automatic Control Conference 51 194-194 2008

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.51.0.194.0  

  77. Response Visualization and Motion Control of Motile Cells

    Hashimoto Koichi, Igarashi Yasunobu, Obara Takeshi, Iwatani Yasushi, Fei Xing Fang

    Proceedings of the Annual Conference of the Institute of Systems, Control and Information Engineers SCI08 49-49 2008

    Publisher: The Institute of Systems, Control and Information Engineers

    DOI: 10.11509/sci.sci08.0.49.0  

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    How the cell motion is initiated by external stimulus, what kind of response is activated inside the cell, and what kind of stimulus can be used to control the cell motion, these questions are the motivation of the research called organized-bio-module. Throughout this research we have developed some experimental systems including tracking microscope, cell actuation device and fluorescent visualization systems. We will present the results obtaind using these systems.

  78. Real-Time Identification of a Moving Object with an Accelerometer in a Stationary Camera View

    Shigeta Osamu, Kagami Shingo, Hashimoto Koichi

    Proceedings of the Japan Joint Automatic Control Conference 51 248-248 2008

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.51.0.248.0  

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    This paper proposes a real-time method for identifying an object with an accelerometer out of many moving objects in the view of a camera using motion data obtained by the camera and the accelerometer. In order to evaluate the similarity of the motion data, Normalized Cross-Correlation is computed for the norms of the acceleration vectors, which were compensated for the gravitational acceleration component.

  79. Visual Tracking for Endoscopic Surgery

    Endo Yoshihide, Hashimoto Koichi

    Proceedings of the Japan Joint Automatic Control Conference 51 245-245 2008

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.51.0.245.0  

  80. 1A1-F19 Implementation and evaluation of a real-time network system based on the standard Ethernet technology

    WAKO Daisuke, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (0) _1A1-F19_1-_1A1-F19_4 2008

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2008._1A1-F19_1  

    eISSN: 2424-3124

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    An easy-to-implement configuration for real-time communication over the standard Ethernet and TCP/IP technologies is presented.We introduce a dedicated network processing unit that handles all of the UDP/IP and Ethernet processing, which can communicate with a host computer through a shared memory, and use off-the-shelf Gigabit Ethernet switches. Experimental results show that the end-to-end delay through three Ethernet switches is below 180μs with 20-μs jitters.

  81. 1P1-F13 A vision-based support system for micro helicopter control

    Watanabe Kei, Iwatani Yasushi, Nonaka Kenichiro, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (0) _1P1-F13_1-_1P1-F13_4 2008

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2008._1P1-F13_1  

    eISSN: 2424-3124

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    This paper proposes an assistant and training system for controlling an unmanned helicopter. The unmanned helicopter does not have any sensors which measure its position or posture. Stationary cameras are placed on the flight field. The helicopter is controlled by using a visual servo technique as follows. An operator steers the helicopter using a controller. The controller makes reference signals. The assistant system designs control signals such that the helicopter tracks the reference signals. The proposed system has the following four functions: automatic takeoff and landing, control channel selection, flight in a desired area, and automatic motion generation. They enable beginners to control an unmanned helicopter.

  82. 1P1-F14 Cooperative control of micro helicopters

    Iwatani Yasushi, Kohou, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (0) _1P1-F14_1-_1P1-F14_4 2008

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2008._1P1-F14_1  

    eISSN: 2424-3124

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    This paper presents cooperative control of two micro co-axial helicopters using vision-based control with occlusion handling. The helicopters do not have any sensors which measure their positions or postures. Eight stationary cameras are placed on the ground. The helicopter positions and postures are reconstructed by fusing the visual information. Experimental results demonstrate that automatic guidance control of micro-helicopters is performed.

  83. 2P2-E15 Video Projection with Reduced Motion Blur Using a High-Speed DMD Projector

    INOUE Tomoyuki, KAGAMI Shingo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (0) _2P2-E15_1-_2P2-E15_4 2008

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2008._2P2-E15_1  

    eISSN: 2424-3124

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    This paper describes a video projection system with reduced motion blur using a high-speed DMD (Digital Micromirror Device) projector. Conventional DMD devices suffer from motion artifacts, which are observed as blurred moving objects, because of eye motion. A DMD projector displays grayscale brightness by pulse-width modulation and requires many patterns for a frame. In a motion video, image positions are updated per frame, which causes large motion blur. To address this issue, we propose a method in which image positions are updated per pattern. To examine whether the proposed method can give an improved result, an evaluation experiment was conducted. The result of the t-test applied to this evaluation experiment proved that there was significant difference at p<.001 between the proposed method and the conventional one, and the motion blur reduction was successful

  84. 2P2-J13 A development of a 3D cell tracking and fluorescence microscope system and its application to a cell motility research

    OBARA Takeshi, IGARASHI Yasunobu, WAKO Daisuke, TSUBOKAWA Hiroshi, NAKAOKA Yasuo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (0) _2P2-J13_1-_2P2-J13_4 2008

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2008._2P2-J13_1  

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    Molecular biologists use a fluorescent microscope to observe intracellular ions (molecules) and study intracellular mechanisms realizing cellular functions. However, they often defocus or miss a freely moving cell from a scope of the fluorescent microscope and then discontinue observation. To overcome this problem, we developed a new microscope system, which enables us to observe intracellular ions and molecules with emission light, focus and track a cell with a transmission light at the same time. We demonstrated that it is possible to continuously observe intracellular Ca^<2+> ions of a freely moving paramecium. It is helpful to research a cell motility of a paramecium.

  85. Fast Sensor Scheduling with Communications among Sensors

    荒井翔悟, 岩谷靖, 橋本浩一

    制御理論シンポジウム資料 37th 351-354 2008

  86. Analysis of Synchronous/Asynchronous Sensor Systems

    荒井翔悟, 岩谷靖, 橋本浩一

    制御理論シンポジウム資料 37th 323-328 2008

  87. Filtering properties of short-term plasticity in the local neural network

    IGARASHI Yasunobu, HONDA NAOKI, HASHIMOTO Koichi

    IEICE technical report 106 (588) 49-54 2007/03/07

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN: 0913-5685

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    We theoretically investigated how short-term plasticity work as a filter in the local neural network. We found a condition where short-term depression played a role of high-pass filter and short-term facilitation did a role of low-pass filter. The condition was that a connection strength of mutual connection is much stronger than that of self connection between excitatory and inhibitory neural populations.

  88. Multi-camera visual servoing of an unmanned helicopter

    Watanabe Kei, Iwatani Yasushi, Hashimoto Koichi

    Proceedings of the Japan Joint Automatic Control Conference 50 99-99 2007

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.50.0.99.0  

  89. 1P1-M02 Development of a 3,000-fps 3D Imaging System Using a High-Speed Projector

    Takei Joji, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2007 (0) _1P1-M02_1-_1P1-M02_4 2007

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2007._1P1-M02_1  

    eISSN: 2424-3124

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    This paper proposes a high frame rate 3D imaging system based on structural light projection using temporally-coded binary patterns. This system consists of a DMD (Digital Micromirror Device) projector and a high-speed camera, both of which operate at over 6,000 frames/s. Introducing image processing algorithms of detecting and tracking the projected light patterns enables frame-by-frame 3D image measurement. Experimental results show that the proposed algorithms worked effectively, and the system achieved 3D imaging at 3,350 frames/s.

  90. 2A2-A06 Image-based visual servo control for a micro helicopter under partial occlusions

    Yoshihata Yuta, Watanabe Kei, Iwatani Yasushi, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2007 (0) _2A2-A06_1-_2A2-A06_4 2007

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2007._2A2-A06_1  

    eISSN: 2424-3124

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    This paper proposes a switched visual feedback control method for a micro helicopter under temporary and partial occlusions. Two stationary cameras are placed on the ground. They track objects which are attached to the helicopter. The track objects are used as image features in the camera coordinates and they are redundant. The proposed controller selects visible track objects, and it computes the errors between positions of the selected objects and pre-specified reference values for them in the camera coordinates. The controller derives control input voltages by using this error. It is robust against temporary and partial occlusions.

  91. 2A2-N05 Development of a microscope system combining tracking and fluorescent observation

    OBARA Takeshi, WAKO Daisuke, IGARASHI Yasunobu, TSUBOKAWA Hiroshi, NAKAOKA Yasuo, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2007 (0) _2A2-N05_1-_2A2-N05_4 2007

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2007._2A2-N05_1  

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    Molecular biologists use a fluorescence microscope to observe intracellular ions (molecules) and study intracellular mechanisms realizing cellular functions. However, they often miss a freely moving cell from a scope of the fluorescence microscope and then discontinue observation. To overcome this problem, we developed a new microscope system, which enables us to observe intracellular ions and molecules with a fluorescent light and track the cell with a transmitted light at the same time. High-speed visual feedback control was an efficient technique for cell tracking. We demonstrated that it is possible to continuously observe intracellular Ca2+ ions of the freely moving paramecium, which is one of the fastest cells. Our microscope system should become an irreplaceable tool to investigate a frontier in molecular biology.

  92. 2P1-D07 A 2-D Mesh Architecture with SIMD and Operation-Pipeline Modes for High Frame Rate Visual Processing

    Iwata Nao, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2007 (0) _2P1-D07_1-_2P1-D07_4 2007

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2007._2P1-D07_1  

    eISSN: 2424-3124

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    Tins paper describes a new recon.flgurabie processor architecture for high frame rate visual processing. This architecture employs a 2-D mesh processing element (PE) array in which the PEs can he configured to operate as SIMD arrays or operation-pipeline trees depending on image processing algorithms so that maximum on-chip memory consumption is reduced, To achieve high on-chip memory utilization, the architecture features that. the instruction register in each PE is mapped in its local memory space and that tire ALU network and the local memory network can be configured independently. Experimental results show that the proposed architecture effectively utilizes both of the SIMD and operation pipeline modes.

  93. 2P1-D08 Moving Object Identification by Fusion of image arid Acceleration Sensors

    Shigeta Osamu, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2007 (0) _2P1-D08_1-_2P1-D08_4 2007

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2007._2P1-D08_1  

    eISSN: 2424-3124

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    This paper proposes a method for identifying an acceleration sensor from many moving objects in a camera image. The canriera and the acceleration sensor are connected with a network and they are not synchronized. To estimate the time lag and evaluate the correlation, NCC (Normalized Cross-Correlation) is utilized. Since the coord.iizate system of the acceleration sensor is not known, NCC of the iiorrns of the acceleration for the cainiera and the sensor are computed. The experimental results show that the proposed method successfully identifies the acceleration sensor from two moving objects.

  94. 1A1-B15 Control of Multi-Agent Systems Based on Collective Behavior of Animals

    Furuichi Junya, Hashimoto Koichi, Iwatani Yasushi, Kagami Shingo

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2006 (0) _1A1-B15_1-_1A1-B15_4 2006

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2006._1A1-B15_1  

    eISSN: 2424-3124

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    A lot of mathematical models of collective behavior for animals have been proposed by ecologists and physicists. This paper applies one of the models to a multi-agent system with non-holonomic constraints. In addition, this paper makes a quantitative assessment of the resulting collective behavior of robots for the obstacle avoidance problem.

  95. 2P1-A26 Trajectory Planning of Motile Cell for Microrobotic Application

    OGAWA Naoko, OKU Hiromasa, HASHIMOTO Koichi, ISHIKAWA Masatoshi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2006 (0) _2P1-A26_1-_2P1-A26_4 2006

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2006._2P1-A26_1  

    eISSN: 2424-3124

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    Our purpose is to utilize microorganisms as micro-robots by using galvanotaxis (locomotor response to electrical stimulus). In this paper, trajectory planning of a Paramecium cell is discussed. In galvanotactic navigation, a Paramecium cell is regarded as a nonholonomic system like a two-wheeled vehicle, but the system disallows switchback or pivoting. We propose a novel method for cusp-free trajectory planning by using Lyapunov method.

  96. 2P1-C14 Tracking and Decoding of Projected Structured Light Patterns for High-Speed 3D Imaging

    Takei Joji, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2006 (0) _2P1-C14_1-_2P1-C14_4 2006

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2006._2P1-C14_1  

    eISSN: 2424-3124

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    This paper proposes an algorithm for high frame rate 3D shape recognition based on structured light projection. We assume a high-speed DMD (Digital Micromirror Device) projector and a high-speed camera, both at over 1000 frame/s, for high frame rate projection and image acquisition, and introduce an image processing algorithm for detecting and tracking the projected structured light patterns to achieve frame-by-frame 3D recognition.

  97. 2P2-C13 Feature-Based Visual Servoing of a Helicopter

    Tokuda Masayuki, Hashimoto Koichi, Iwatani Yasushi, Kagami Shingo

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2006 (0) _2P2-C13_1-_2P2-C13_4 2006

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2006._2P2-C13_1  

    eISSN: 2424-3124

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    This paper presents a control method of a helicopter via feature-based visual servoing. The helicopter has no sensors or computers. The experimental result demonstrates the effectiveness of the control method.

  98. 2P2-C16 A Real-Time Network System Interoperable with the Standard Ethernet

    Aoki Ryosuke, Kagami Shingo, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2006 (0) _2P2-C16_1-_2P2-C16_4 2006

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2006._2P2-C16_1  

    eISSN: 2424-3124

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    This paper describes a concept of a new real-time network system by introducing a novel technique into a layer-2 network switch. Our goals are two-fold : (1) millisecond-order real-time communication, which is required in high-speed robot control applications, and (2) interoperability with the standard 100BASE-TX Ethernet. The operation of the proposed switch is described and the results of preliminary evaluation are presented.

  99. Optimal sensor scheduling in sensor networks

    荒井翔悟, 岩谷靖, 橋本浩一

    制御理論シンポジウム資料 35th 173-178 2006

  100. Microrobotic Control of Paramecium Cells using Galvanotaxis Invited

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    IEEE ROBIO '05 Workshop on Biomimetic Robotics and Biomimetic Control 2005/07

  101. Dynamics Model of Paramecium Galvanotaxis Invited

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings of SICE 5th Annual Conference on Control Systems 691-694 2005/05

  102. Motion Control of Paramecium Cell using High-Speed Tracking Invited

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings of SICE 5th Annual Conference on Control Systems 687-690 2005/05

  103. 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2004)

    HASHIMOTO Koichi

    44 (2) 154-154 2005/02/10

    ISSN: 0453-4662

  104. 2P1-N-078 Evaluation of Overrun in Paramecium Galvanotaxis using its Dynamics Model(Micro/Nano Operation 2,Mega-Integration in Robotics and Mechatronics to Assist Our Daily Lives)

    Ogawa Naoko, Oku Hiromasa, Hashimoto Koichi, Ishikawa Masatoshi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2005 (0) 194-194 2005

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2005.194_1  

    eISSN: 2424-3124

  105. ロボットにおける視覚と制御

    橋本浩一

    日本機械学会計算力学講演会講演論文集 17th (17) 3-3 2004/11/17

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmecmd.2004.17.3  

    ISSN: 1348-026X

    eISSN: 2424-2799

  106. Linux系OSによるリアルタイム制御

    熊谷正朗, 森友一朗, 橋本浩一

    計測と制御 43 (6) 515-520 2004/06/10

    DOI: 10.11499/sicejl1962.43.515  

    ISSN: 0453-4662

  107. Realization of Tracking and Catching a 3D Flying Target based on GAG Strategy

    Mori R, Hashimoto K, Miyazaki F

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 51 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.51_2  

    eISSN: 2424-3124

  108. Visual Servoing based on Switching Algorithm

    Shinohara R, Mori R, Hashimoto K

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 52 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.52_1  

    eISSN: 2424-3124

  109. 高速多指ハンドと高速視覚によるダイナミックキャッチング

    今井睦朗, 並木明夫, 橋本浩一, 石川正俊, 金子真, 亀田博, 小山順二

    ロボティクスシンポジア予稿集 9th 2004

    ISSN: 1881-7300

  110. High-Speed Focus Tracking of A Dynamic Microscopic Object Using 1-kHz High-Speed Variable-Focus Lens

    Oku H, Hashimoto K, Ishikawa M

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 (0) 14-15 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.14_5  

    eISSN: 2424-3124

  111. Microscope Focusing using High-speed Vision for Three-dimensional Tracking of Microorganism

    Theodorus., Oku H, Ishikawa M, Hashimoto K

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 (0) 15-15 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.15_1  

    eISSN: 2424-3124

  112. An active contour model for tracking a microorganism on a high-speed vision system

    Takemoto M, Ogawa N, Oku H, Ishikawa M, Hashimoto K

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 (0) 15-15 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.15_2  

    eISSN: 2424-3124

  113. A Current Controlled Electrostimulatoin Device for the Motion Control of Paramecia

    Yamane J, Ogawa N, Oku H, Hashimoto K, Ishikawa M

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 (0) 15-15 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.15_3  

    eISSN: 2424-3124

  114. Robotic Catching Using a high-speed Hand with Soft fingertips

    Onishi M, Namiki A, Hashimoto K, Ishikawa M

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2004 (0) 108-108 2004

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2004.108_1  

    eISSN: 2424-3124

  115. A Microorganism Galvanotaxis Measurement System

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings of The 4th SICE System Integration Division Annual Conference (SI2003) 2003 385-386 2003/12

    Publisher: 社団法人日本機械学会

  116. A Motile Microorganism Tracking System using a High-Speed Vision System with an Image Intensifier

    Hiromasa Oku, Naoko Ogawa, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings of SICE 20th Sensing Forum 20 331-334 2003/09/16

    Publisher: 〔計測自動制御学会〕

    ISSN: 1343-7631

  117. A Parallel Processing Algorithm for Active Contours

    Hashimoto Koichi

    Proceedings of the Japan Joint Automatic Control Conference 46 1157-1160 2003

    Publisher: The Japan Joint Automatic Control Conference

    DOI: 10.11511/jacc.46.0.1157.0  

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    This paper proposes a parallel computation algorithm for very highspeed active contour. The algorithm is implemented on the visionchip which has SIMD architecture. The performance is evaluated byreal time tracking of high speed finger motion.

  118. Configuration and Robustness in Visual Servo

    Hashimoto K.

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2003 65-65 2003

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2003.65_1  

    eISSN: 2424-3124

  119. Dynamic Catching Using a High-speed Multifingered Hand

    Imai Y., Namiki A., Hashimoto K., Ishikawa M.

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2003 (0) 41-41 2003

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2003.41_2  

    eISSN: 2424-3124

  120. Response Measurement of Paramecia for Realization of Organized Bio-Modules

    Ogawa N., Oku H., Hashimoto K., Ishikawa M.

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2003 (0) 140-140 2003

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2003.140_3  

    eISSN: 2424-3124

  121. Special Issue - Advanced 3D vision and its application to robotics - Preface

    K Hashimoto

    ADVANCED ROBOTICS 17 (10) 967-968 2003

    ISSN: 0169-1864

  122. Preface

    Koichi Hashimoto

    Advanced Robotics 17 (10) 965-966 2003/01/01

    DOI: 10.1163/156855303322554373  

    ISSN: 0169-1864

  123. A review on vision-based control of robot manipulators

    K Hashimoto

    ADVANCED ROBOTICS 17 (10) 969-991 2003

    DOI: 10.1163/156855303322554382  

    ISSN: 0169-1864

    eISSN: 1568-5535

  124. A hierarchical control architecture for high-speed visual servoing

    Akio Namiki, Koichi Hashimoto, Masatoshi Ishikawa

    International Journal of Robotics Research 22 (10-11) 873-888 2003

    Publisher: SAGE Publications Inc.

    DOI: 10.1177/027836490302210006  

    ISSN: 0278-3649

  125. Visual servoing with nonlinear observer

    Hashimoto, Koichi, Kimura, Hidenori

    Proceedings of 1995 IEEE International Conference on Robotics and Automation 1 484-489 2002/11/19

    Publisher: IEEE

    DOI: 10.1109/robot.1995.525330  

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    Visual servo system is a robot control system which incorporates the vision sensor in the feedback loop. Since the robot controller is also in the visual servo loop, compensation of the robot dynamics is important for high speed tasks. Moreover estimation of the object motion is necessary for real time tracking because the visual information includes considerable delay. This paper proposes a nonlinear model-based controller and a nonlinear observer for visual servoing. The observer estimates the object motion and the nonlinear controller makes the closed loop system asymptotically stable based on the estimated object motion. The effectiveness of the observer-based controller is verified by simulations and experiments on a two link planar direct drive robot.

  126. Development of a High-speed Hand System Based on Visual Feedback

    今井睦朗, 並木明夫, 橋本浩一, 金子真, 石川正俊

    日本ロボット学会学術講演会予稿集(CD-ROM) 20th 2002

  127. A Parallel Snake Algorithm for Vision Chip System

    山野高将, 中坊嘉宏, 橋本浩一, 石川正俊

    日本ロボット学会学術講演会予稿集(CD-ROM) 20th 2002

  128. Motion Measurement of a Rapidly Rotating Object Using a Vision Chip

    Watanabe Y., Komuro T., Kagami S., Hashimoto K., Ishikawa M.

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2002 (0) 114-114 2002

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2002.114_4  

    eISSN: 2424-3124

  129. ビジュアルサーボイング ビジュアルサーボにおける予測と感度

    橋本浩一

    計測と制御 40 (9) 630-635 2001/09/10

    DOI: 10.11499/sicejl1962.40.630  

    ISSN: 0453-4662

  130. HAIセッション3 ロボットと人間 対話者方向からのアピアランスに基づくジェスチャ生成—特集 HAI(Human-Agent Interaction)および一般発表

    平松 雅巳, 八木 康史, 橋本 浩一

    知識ベースシステム研究会 / 人工知能学会 [編] 52 25-30 2001/07

    Publisher: 東京 : 人工知能学会

  131. 1P1-G6 Message Transfar Protocol for RealTime-Linux : Controlling 7DOF robot manipulator

    Hiramatsu M., Yagi Y., Hashimoto K., Yachida M.

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2001 26 2001

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmermd.2001.26_5  

    eISSN: 2424-3124

  132. 視覚と制御

    橋本浩一

    計測自動制御学会制御部門大会ワークショップ制御部門大会ワークショップテキスト, 2001 2001

  133. RT‐Linuxに基づく視覚サーボシステム 画像処理とロボット制御をLinuxで実現

    橋本浩一

    画像ラボ 11 (4) 13-17 2000/04/01

    Publisher: 日本工業出版

    ISSN: 0915-6755

  134. 2A1-66-087 視覚サーボにおける中継画像生成法の比較

    橋本 浩一, 田中 浩平, 則次 俊郎

    ロボティクス・メカトロニクス講演会講演概要集 2000 (0) 71-71 2000

    Publisher: 一般社団法人 日本機械学会

    DOI: 10.1299/jsmermd.2000.71_5  

    eISSN: 2424-3124

    More details Close

    注視対象物のカメラ画像を目標の画像に収束させることによりロボットのハンド位置を目標位置に導く特徴ベース視覚サーボ法はその安定性が局所的であることは知られているが, 初期画像と目標画像の間に中継画像を内挿することにより安定領域を拡大させることが可能である。そこで本研究では, いくつかの中継画像生成法を例にとり, それらの間の比較を行うことで, その中継画像のより良い生成方法を検討する。

  135. 2P1-47-081 ゴムボールを用いた多自由度フレキシブルアクチュエータの開発

    冨家 滋晃, 則次 俊郎, 橋本 浩一, 高岩 昌弘

    ロボティクス・メカトロニクス講演会講演概要集 2000 (0) 86-86 2000

    Publisher: 一般社団法人 日本機械学会

    DOI: 10.1299/jsmermd.2000.86_7  

    eISSN: 2424-3124

    More details Close

    1つの関節に多自由度を持たせる, 柔らかい関節というコンセプトに基づき新しいアクチュエータを考案した。6つのゴムボールをアクチュエータとし, それぞれ正6角形のシャフトに固定する。ゴムボールの膨張はフレームにより拘束する。このゴムボールの圧力差によりシャフトがx, y, z軸周りに回転する3自由度のアクチュエータである。本稿ではこのアクチュエータの動作について解析し, 実際に製作したアクチュエータにより動作実験を行っている。

  136. 710 Haptic lnterface using Pneumatic Silicon Sheet

    TSUTSUI Shingo, NORITSUGU Toshiro, HASHIMOTO Koichi, TAKAIWA Masahiro

    The Proceedings of Conference of Chugoku-Shikoku Branch 5 (0) 237-238 2000

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmecs.005.1.237  

    eISSN: 2424-2764

  137. 714 Energy Saving Control of Air Active Suspension Using Low Pressure Supply

    NORITSUGU Toshiro, SUGA Yasuhiro, HASHIMOTO Koichi, TAKAIWA Masahiro

    The Proceedings of Conference of Chugoku-Shikoku Branch 5 (0) 245-246 2000

    Publisher: The Japan Society of Mechanical Engineers

    DOI: 10.1299/jsmecs.005.1.245  

    eISSN: 2424-2764

  138. Toward the breakthrough of Pneumatic System

    則次 俊郎, 橋本 浩一, 高岩 昌弘

    油空圧講演論文集 11 (2) 76-77 1999/10/01

  139. Study on the function enhancement of mechanical system with intelligent control technology.

    則次俊郎, 橋本浩一, 高岩昌弘

    ハイテクインフォメーション (109) 28-30 1999/07/30

    ISSN: 0914-6911

  140. Visual servoing of nonholonomic cart

    K Hashimoto, T Noritsugu

    1997 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION - PROCEEDINGS, VOLS 1-4 2 1719-1724 1997

    ISSN: 1050-4729

  141. Visual Feedback Control.

    橋本浩一

    システム制御情報学会研究発表講演会講演論文集 40th (33)-(38) 1996

  142. Visual Feedback Control-From Static to Dynamic.

    橋本浩一

    システム/制御/情報 38 (12) 659-665 1994/12

    ISSN: 0916-1600

  143. ビジュアルサーボイング-最適制御によるアプローチ-

    橋本浩一

    日本ロボット学会誌 12 (7) 773-778 1994

  144. ビジュアルフィートバックイング

    橋本浩一

    計測と制御 35 282-285 1994

  145. 第12回 IFAC 国際会議に出席して

    橋本 浩一

    システム/制御/情報 : システム制御情報学会誌 = Systems, control and information 37 (12) 739-740 1993/12/15

    ISSN: 0916-1600

  146. H_∞ Control of Robot with Linearized Model

    Kawabata Masashi, Hashimoto Koichi, Kimura Hidenori

    Transactions of the Japan Society of Mechanical Engineers. Series C. 59 (566) p3151-3156 1993/10

    Publisher: The Japan Society of Mechanical Engineers

    ISSN: 0387-5024

    More details Close

    Dynamic models of mechanical manipulators consist of highly nonlinear coupled second-order differential equations. Linear time-invariant control laws which utilize the linear model of robot dynamics are often used for industrial robots because of the simplicity of the control algorithms. However, due to the fact that nonlinearity is not considered and uncertainity exeists in the manipulator models, linear time-invariant control schemes cannot achieve satisfactory control performance. Therefore, a control scheme which is robust against the errors caused by the linerization procedure is required. In this paper we propose an H_∞ control approach to the position control of the manipulator. The H_∞ controller is linear and time-invariant and it guarantees the closed-loop robustness against the modeling error. Simulations and experiments on the two-link direct-drive manipulator demonstrate the effectiveness of the proposed H_∞ control scheme.

  147. 1992 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'92) に出席して

    橋本 浩一

    システム/制御/情報 : システム制御情報学会誌 = Systems, control and information 36 (11) 763-763 1992/11/15

    ISSN: 0916-1600

Show all ︎Show first 5

Books and Other Publications 4

  1. Visual servoing via advanced numerical methods

    Chesi Graziano, Koichi Hashimoto

    Springer 2010/09

    ISBN: 9781849960885

  2. Control and modeling of complex systems : cybernetics in the 21st century : festschrift in honor of Hidenori Kimura on the occasion of his 60th birthday, Cybernetics in the 21st Century

    Koichi Hashimoto, Yasushi Oishi, Yamamoto Yutaka

    Birkhäuser 2003/04

    ISBN: 0817643257

  3. Visual servoing : real-time control of robot manipulators based on visual sensory feedback : Paperback

    Koichi Hashimoto

    World scientific 1993/04

    ISBN: 9810246064

  4. Visual Servoing: Real-Time Control of Robot Manipulators Based on Visual Sensory Feedback

    Koichi Hashimoto ed

    World scientific 1993/04

    ISBN: 9810213646

Presentations 274

  1. Multi-objective Deep Reinforcement Learning for Crowd Guidance Policy Optimization

    NISHIDA Ryo, TANIGAKI Yuki, ONISHI Masaki, HASHIMOTO Koichi

    Proceedings of the Annual Conference of JSAI 2022

    More details Close

    The objective of this study is to improve Multi Objective Deep Reinforcement Learning (MODRL) for optimizing crowd guidance strategies. In general, MODRL is classified into Outer-loop method and Inner-loop method. In the former, multiple objective functions are transformed into a single objective using a scalarization function, and the Pareto front, which is the optimal solution set, is obtained by repeatedly updating the weights of the scalarization function and performing single-objective optimization. However, in this method, if the computational cost of single-objective optimization is high, the overall computational cost increases in proportion to the number of times the weights update. On the other hand, the latter the Inner-loop method is designed to learn Pareto front in a learning process. In this study, we examine the approximation of the Pareto solution by different action selection methods of Pareto-DQN, which is a typical method of the Inner-loop method. In the experiments, we evaluate the proposed method using a benchmark problem and finally discuss its application to the optimization of crowd guidance strategies.

  2. In-hand manipulation by a robot hand equipped with friction-variable surface and vision-based tactile sensor

    SUZUKI Yoshiyuki, YAMAGUCHI Akihiko, NOJIRI Seita, WATANABE Tetsuyou, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021

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    We explore a control method of a robot hand where the CAVS mechanism is introduced on the fingers to change the contact friction. A vision-based tactile FingerVision is introduced under CAVS, with which the hand can sense slippage and orientation of grasped objects. We use this robot hand in controlling the orientation of a grasped object by slipping it on purpose with the gravity. This paper reports the preliminary results of comparison of control with and without CAVS.

  3. Detection of human and birds using a fulldome camera

    NABESHIMA Eishu, HASHIMOTO Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021

    More details Close

    The fulldome camera is a camera that can capture images in all directions, including up and down, from the shooting point in a single shot. In this study, we aim to detect people and birds in an image taken by a fulldome camera. As a result, we can detect small people in the image by dividing the image into small parts. We also try to detect birds, but it is difficult to detect them. In the future, we aim to make bird datasets and detect them with high accuracy.

  4. Debugging method of model-based reinforcement learning for complex dynamics structures

    Yashima Ryota, Yamaguchi Akihiko, Hashimoto Koichi

    The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2021

    More details Close

    In this study, we explore a systematic debugging method for model-based reinforcement learning where a library of skills is introduced. When the performance (learning speed, obtained quality of behavior) of model-based reinforcement learning is not sufficient, identifying the reason is difficult especially when the dynamics are complicated such as liquid pouring. In our previous work, we introduced a library of skills in reinforcement learning of such complicated tasks. We think that the use of a skill library is also beneficial to investigate the performance issues since we can test each subset of skills separately. Our goal is making a systematic debugging way of reinforcement learning based on this idea. This paper reports a preliminary development toward this goal where we repeatedly increase and decrease the complexity of a subtask to make debug easier like curriculum learning until we can obtain sufficient results with the original task. We conducted simulation experiments of liquid pouring to investigate this approach. The results show a performance improvement.

  5. 経路選択モデリングによる大規模な人流シミュレーションの再現性向上

    西田 遼, 大西 正輝, 野田 五十樹, 橋本 浩一

    システム制御情報学会研究発表講演会講演論文集 2020/05/20

  6. イベント時プローブ軌跡データを用いた異常車両評価

    髙山真太朗, 桑原雅夫, 川崎洋輔, 梅田祥吾, 橋本浩一

    ロボティクス・メカトロニクス講演会講演概要集 2019/12

  7. 追跡対象の変形や輝度変化を考慮したトラッキングの提案

    野澤駿基, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2018/06/01

  8. フルカラー高速ホモグラフィ変換プロジェクタ

    鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2018/06/01

  9. FingerVisionによるインハンド姿勢推定

    高山真太朗, 山口明彦, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2018/06/01

  10. 複数視点からの2次元画像および3次元計測データに基づく3次元再構成

    戸田幸宏, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2018/06/01

  11. 高速カメラを用いたタッチ検出のための振動解析

    成田正太郎, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2018/06/01

  12. サチュレーションとガンマ補正を考慮したプロジェクタ・カメラシステムの光学キャリブレーションツールの開発

    千葉直也, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2018/06/01

  13. Destination Selectable Pedestrian Model using Social Force Model

    西田遼, 橋本浩一, 大西正輝

    システム制御情報学会研究発表講演会講演論文集(CD-ROM) 2018/05/16

  14. 三次元構造マッチングを用いたペプチド立体構造探索手法の構築

    小松大和, 千葉直也, 橋本浩一

    情報処理学会全国大会講演論文集 2018/03/13

  15. LT行列の推定に基づく三次元計測法

    千葉直也, 橋本浩一

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM) 2017/12/20

  16. Trajectory Data Miningを用いたヒトの移動データの解析

    西田遼, 橋本浩一

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM) 2017/12/20

  17. 形状モデルを用いないばら積みシーンの物体検出

    福地伸晃, 橋本浩一

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM) 2017/12/20

  18. 高速ディスプレイ映像に隠蔽されたマーカを用いるモバイルARシステム

    草なぎ勉, 鏡慎吾, 橋本浩一

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM) 2017/12/20

  19. ロボット顕微鏡を用いた線虫の「意思決定」のための演算の解明

    木村幸太郎, 橋本浩一

    計測自動制御学会システム・情報部門学術講演会講演論文集(CD-ROM) 2017/11/25

  20. ロボット顕微鏡OSaCaBeNによって明らかにする「移動行動のための線虫の脳内演算」

    木村幸太郎, 谷本悠生, 三浦拓也, WEN Chentao, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2017/05/09

  21. モデルが作れない物体のばら積み個別認識

    福地伸晃, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2017/05/09

  22. 物理シミュレーションと透視投影カメラモデルを用いたバラ積みシーン点群生成プログラムの開発

    千葉直也, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2017/05/09

  23. ショウジョウバエの行動分類

    野澤駿基, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2017/05/09

  24. 形状特徴の少ない工業部品の3次元モデル作成

    寺島由杜, 荒井翔悟, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2017/05/09

  25. バーチャルプロジェクション型インタラクションシステムの高速化

    乙部成史, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2017/05/09

  26. 領域ベース平面追跡の高速計算

    鏡慎吾, 橋本浩一

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM) 2016/12/15

  27. 高速ディスプレイ映像への埋め込みに適した不可視マーカの検討

    草なぎ勉, 鏡慎吾, 橋本浩一

    Optics &amp; Photonics Japan講演予稿集(CD-ROM) 2016/10/15

  28. 加法合成画像の追跡に基づく動く平面への追従投影

    後藤皓史, 鏡慎吾, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2016/09/07

  29. 未知混合比の加法合成画像の追跡

    後藤皓史, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2016/06/08

  30. 形状特徴の少ない工業部品の3次元点群全周モデル作成

    寺島由杜, 荒井翔悟, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2016/06/08

  31. ディスプレイ映像を基準としたモバイルARのためのマーカ隠蔽手法

    草なぎ勉, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2016/06/08

  32. ビンピッキングのためのランダムフォレストによるバラ積み部品の3次元位置姿勢推定

    福地伸晃, 荒井翔悟, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2016/06/08

  33. ディンプル中心点の位置合わせを利用した高速回転ゴルフボールの画像計測

    今井悠太, 鏡慎吾, 橋本浩一

    計測自動制御学会システムインテグレーション部門講演会(CD-ROM) 2015/12/14

  34. 高速ホモグラフィ変換プロジェクタ

    鏡慎吾, 橋本浩一

    Optics &amp; Photonics Japan講演予稿集(CD-ROM) 2015/10/15

  35. Sticky Projection Mapping:動く平面への高速追従投影

    鏡慎吾, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2015/09/03

  36. 3D Keypoint対応付けの高精度化に関する検討

    荒井翔悟, 福地伸晃, 千葉直也, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2015/05/16

  37. 高精度位相シフト法の提案

    房州俊樹, 荒井翔悟, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2015/05/16

  38. 高速回転するゴルフボールの運動計測のためのディンプル画像解析

    今井悠太, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2015/05/16

  39. 線虫の経験塩濃度依存的な行動を制御する神経回路の解明

    佐藤博文, 國友博文, FEI Xianfeng, 橋本浩一, 飯野雄一

    日本分子生物学会年会プログラム・要旨集(Web) 2014/11/26

  40. ディスプレイ映像中の知覚困難なフレームに対する同期撮像システム

    新留英峰, 鏡慎吾, 橋本浩一

    Optics &amp; Photonics Japan講演予稿集(CD-ROM) 2014/10/24

  41. 携帯プロジェクタのための弾き動作に基づくスクロールインタフェース

    阿部圭馬, 鏡慎吾, 橋本浩一

    日本バーチャルリアリティ学会大会論文集(CD-ROM) 2014/09/17

  42. ディスプレイ中の映像に埋め込まれた不可視ARマーカに対する同期撮像

    新留英峰, 鏡慎吾, 橋本浩一

    日本バーチャルリアリティ学会大会論文集(CD-ROM) 2014/09/17

  43. 位相シフト法によるばら積みボルトの認識とビンピッキング

    荒井翔悟, 原田智紀, 藤平敦, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  44. 汎用ハンドを用いたマニピュレーションのための高性能ロボットビジョン技術開発

    橋本浩一, 荒井翔悟

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  45. ビジュアルサーボによる目視検査システム

    ザン チュアンタオ, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  46. ESM法を用いた非線形最適化による3次元形状物体の位置姿勢推定

    鏡慎吾, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  47. 位置ベース・画像ベース混合ビジュアルサーボによるシート状柔軟物体の位置合わせ

    小見耕太郎, 鏡慎吾, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  48. 工業部品の認識と位置姿勢推定に関する研究

    房州俊樹, 荒井翔悟, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  49. 汎用ハンドによる組立作業の実現

    小菅一弘, 南本高志, 橋本浩一

    日本ロボット学会学術講演会予稿集(CD-ROM) 2014/09/04

  50. 画像フィードバックプロジェクションによる三次元計測

    房州俊樹, 荒井翔悟, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2014/05/24

  51. バラ積みボルトのピッキング

    荒井翔悟, 原田智紀, 藤平敦, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2014/05/24

  52. 人間と協働する産業用ロボットのための安全システムに関する研究

    古澤良和, 荒井翔悟, 伊藤翔吾, 橋本浩一, 高橋弘

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2014/05/24

  53. 人間‐マニピュレータ協働作業における高速3次元計測を用いたリアルタイム衝突回避

    古澤良和, 荒井翔悟, 橋本浩一

    ロボティクスシンポジア予稿集 2014/03/13

  54. 線虫用VR環境を用いた,神経回路の基本的動作メカニズムの解明

    木村幸太郎, 谷本悠生, FEI X, 橋本浩一

    自動制御連合講演会(CD-ROM) 2013/11/16

  55. モバイルプロジェクタの動きを利用する映像シークインタフェース

    阿部圭馬, 鏡慎吾, 橋本浩一

    ヒューマンインタフェースシンポジウム論文集(CD-ROM) 2013/09/10

  56. Position and Orientation Estimation of an Acceleration and Angular-Velocity Sensor with Help of Human Pose Information

    進藤康孝, 進藤康孝, 鏡慎吾, 橋本浩一

    電子情報通信学会技術研究報告 2013/05/09

  57. The application on tracking moving face by combining efficient second-order minimization and PD neural controller

    Hanh Duc Le, Chyi Yeu Lin, Chi Ying Lin, Koichi Hashimoto

    Advanced Science Letters 2012/08/02

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    This paper presents the visual feedback control for tracking the face of the jogger on the treadmill by combining the existing techniques, efficient second-order minimization algorithm (ESM) with the intelligent control PD neural network. This study aims to develop an efficient algorithm for controlling the camera installed at the end of a 3 DOF robot arm to fix its orientation to a 2D moving face. Firstly, the ESM algorithm is derived for feedback on the orientation of the 2D human face. Then, the intelligent control PD neural network algorithm is applied for the tracking system to synchronize the motion of the camera with the movement of the face. To improve the adaptation of the system and assure the real time implementation of the application, the fuzzy switching controller and Kalman filter are also designed to support the output gain of the PD controller and predict the orientation of the face. The visual feedback control scheme was tested and proven effectively in experiments involving the tracking system, the industrial robot, and the camera attached to the end-effecter. ? 2012 American Scientific Publishers. All rights reserved.

  58. 縦方向外乱を考慮したRCヘリコプタの自律飛行

    古澤良和, 荒井翔悟, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2012/05/27

  59. 高速ビジョンシステムを用いたリアルタイム運動予測表示―予測軌道を表示するエアホッケーシステム―

    荒井勇亮, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2012/05/27

  60. GPU acceleration in a visual servo system

    Chuantao Zang, Koichi Hashimoto

    Journal of Robotics and Mechatronics 2012/02/01

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    In this paper we present our novel work of using the Graphic Processing Unit (GPU) to improve the performance of a homography-based visual servo system. We propose a GPU accelerated Efficient Second-order Minimization (GPU-ESM) algorithm to ensure a fast and stable homography solution, approximately 20 times faster than its CPU implementation. To enhance the system stability, we adopt a GPU accelerated Scale Invariant Feature Transform (SIFT) algorithm to deal with those cases where GPU-ESM algorithm performs poor, such as large image differences, occlusion and so on. The combination of both GPU accelerated algorithms is described in detail. The effectiveness of our GPU accelerated system is evaluated with experimental data. The key optimization techniques in our GPU applications are presented as a reference for other researchers.

  61. Fast and adaptive auto-focusing algorithm for microscopic cell observation

    Takeshi Obara, Yasunobu Igarashi, Koichi Hashimoto

    IEEE International Conference on Intelligent Robots and Systems 2011/12/29

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    In biological and medical sciences, optical microscopes are widely used. By using the microscope, we can observe cellular dynamics including intracellular ions and molecules tagged with fluorescent dyes at a high magnification. However, a freely motile cell easily escapes from a field of view and a focal plane of the typical microscope. Therefore, we propose a novel auto-focusing (AF) algorithm and develop an AF and tracking microscope. XYZ positions of a microscopic stage are visual feedback controlled to focus and track the cell automatically. A bright-field image is used to estimate a cellular position. XY centroids are used to estimate XY positions of the tracked cell. To estimate a Z position, we use a diffraction pattern around the cell membrane. This estimation method is so-called Depth from Diffraction (DFDi). However, this method is not robust for individual differences between cells because the diffraction pattern depends on each cellular shape, reflective index and transparency. Therefore, in this study, we propose a real-time correction of DFDi by using 2D Laplacian of a center region of the cell as a goodness of the focus. To evaluate the performance of our developed algorithm and microscope, we auto-focus and track a freely moving paramecium. In this experimental result, the paramecium is auto-focused and kept inside the scope of the microscope during 45s. The evaluated focal error is within 5[μm] , while a length and a thickness of the paramecium are about 200[μm] and 50[μm] , respectively. ? 2011 IEEE.

  62. 高速ビジョンシステムを用いたリアルタイム運動予測表示―エアホッケーを題材とした基礎検討―

    荒井勇亮, 鏡慎吾, 橋本浩一

    ヒューマンインタフェースシンポジウム論文集(CD-ROM) 2011/09/13

  63. A method of personal positioning for indoor customer tracking utilizing wearable inertial sensors

    Yasuaki Ohtaki, Dan Hu, Koichi Hashimoto, Hikaru Inooka

    International Journal of Applied Electromagnetics and Mechanics 2011/07/04

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    This paper presents a method for indoor personal positioning especially addressing on a simple gait measurement using a body-mounted inertial sensor, a walk path estimation algorithm, and a trajectory identification technique. Considering utility of on-site customer traffic tracking, the method was designed to be autonomous needless of neither external measures nor cumbersome installations to the environment. The inertial sensor combining three-dimensional accelerometer, angular rate sensors, and geomagnetic sensors was used to assess walking dynamics and to obtain changes of heading directions. To avoid an inherent problem of the walk trajectory estimation by conventional dead-reckoning algorithm, an advanced probabilistic map matching method which employs a Particle filter was developed. The experiment with healthy male adults was evaluated to confirm the utility of the method in a condition of small retail store. The result showed that the proposed method demonstrated sufficiently feasible tacking which delineated personal trajectories and positioning while shopping. The method showed possible availability with the portable instrument and improved estimation accuracy by the advanced probabilistic map matching which identifies proper routings on the basis of the maximum likelihood. The method will be useful to enhance ambulatory personal tracking technique in daily indoor environment. ? 2011 - IOS Press and the authors. All rights reserved.

  64. 3D Measurement Using a High-Speed Projector-Camera System with Application to Physical Interaction Games

    戸澗宏太, 鏡慎吾, 橋本浩一

    日本バーチャルリアリティ学会論文誌 2011/06/30

  65. 同調して運動する人物を観測する加速度センサとカメラの情報の対応付けに関する検討

    佐藤俊一, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2011/05/26

  66. 線虫C.elegansにおける姿勢依存的光刺激システムの開発

    佐藤陽介, 丸三徳, 橋本浩一, 飯野雄一

    日本分子生物学会年会プログラム・要旨集(Web) 2011/05/25

  67. Fast and Adaptive Auto-focusing Microscope

    小原健, 五十嵐康伸, 橋本浩一

    計測自動制御学会論文集 2011/01/31

  68. An advanced algorithm for illumination-based synchronization of high-speed vision sensors in dynamic scenes

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2010/12/29

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    To acquire images of dynamic scenes from multiple points of view simultaneously, the acquisition time of vision sensors should be synchronized. In this paper, an advanced illumination-based synchronization method derived from the phase-locked loop (PLL) algorithm is proposed and evaluated. To remove the dependency of system behavior on the amplitude of the illumination, which can be affected by moving objects or the positional relation of the illumination and objects, the feedback amount of the PLL system is normalized per frame by the estimated amplitude of the reference signal to generate stable synchronization even in highly dynamic scenes. Both simulated results and real world experiments demonstrated successful synchronization that a 1,000-Hz frame rate vision sensor was successfully synchronized to both direct and indirect illumination with only 28-μs peak-to-peak jitters. ? 2010 Springer-Verlag.

  69. Autonomous flight of small helicopter with real-time camera calibration

    Takanori Matsukawa, Shogo Arai, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 2010/12/01

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    We propose a real-time camera calibration method for an autonomous flight of a small helicopter. Our purpose is to control a small helicopter automatically by using cameras fixed on the ground. We use calibrated cameras, un-calibrated cameras, and the small helicopter that is not attached with any sensors. The proposed method finds correspondences between image features in the two images of a calibrated camera and an un-calibrated camera, and estimates the extrinsic parameters of cameras using a particle filter in real time. We evaluate a utility of the proposed method by experiments. We compare real-time calibration by typical bundle adjustment with a Gauss Newton method to the proposed method in the experiment of the small helicopter flight. The autonomous flight of the small helicopter can be achieved by the proposed method in the situation that a flight of a helicopter can not be achieved with typical bundle adjustment with a Gauss Newton method. ?2010 IEEE.

  70. Fluorescent microscope system to track a particular region of C. elegans

    Mitsunori Maru, Yasunobu Igarashi, Shogo Arai, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 2010/12/01

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    C. elegans has been widely studied for understanding the basic mechanisms of nervous system function. In order to examine neural activity in C. elegans, it is necessary to measure a Ca 2+ concentration in a neuron. Observers acquire fluorescence images of fluorescent dyes introduced in neurons. Then they can evaluate intensity of the fluorescence images which respond to changes in the Ca 2+ concentration. Thus neural activity is examined by the fluorescence images of the neuron. However, observing the specified neuron in C. elegans for a long time is very difficult since a head of C. elegans moves quickly. To solve this problem, we develop a microscope system which can track a particular region of C. elegans and monitor fluorescence emitted by fluorescent protein in C. elegans. In experimental results, we show that the microscope system can track the head region of moving C. elegans and monitor fluorescence emitted by a chemosensory neuron ASER at 20x magnification. ?2010 IEEE.

  71. An improved visual inspection system using visual servo

    Chuantao Zang, Koichi Hashimoto

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings 2010/12/01

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    In this paper we present an improved automatic visual inspection system. In this system, homography based visual servo is used to accurately locate the camera position and attitude so that a template matching inspection can be realized. To improve the visual servo system's performance, we propose a combination strategy of a GPU based Efficient Second-order Minimization (GPU-ESM) algorithm and a GPU based Scale Invariant Feature Transform (SIFT) algorithm. By utilizing the parallel processing capability of a GPU, system processing speed and reliability has been greatly improved. In this paper, the implementation details of the visual inspection system are presented. The performance of the proposed combination strategy is evaluated with experimental data. ?2010 IEEE.

  72. Real-time virtual haptization of an object surface measured by a high-speed projector-camera system

    Kota Toma, Shingo Kagami, Koichi Hashimoto

    IEEE/RSJ 2010 International Conference on Intelligent Robots and Systems, IROS 2010 - Conference Proceedings 2010/12/01

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    This paper reports real-time virtual haptization of, for example, a remote object surface based on high-speed 3D shape measurement. With this system, the operator feels sense of touch as if tracing the surface of an object. We use a high-speed projector-camera system to achieve high-speed measurement of the object surface so that high-frequency haptic feedback is maintained at a haptic device PHANToM. An actively directed structured light is projected so that the projected slit ray intersects with the haptic interaction point, which is determined by the stylus position of the haptic device. A camera image of this scene gives the positional relationship between the object surface and the haptic interaction point. We use this relationship to generate force feedback such that the haptic interaction point is pushed back to a point on the intersection of the slit ray and the object surface. Experimental results show that the proposed system displays an object shape correctly and that the high-speed measurement contributes to displaying smooth motion of an moving object. ?2010 IEEE.

  73. Efficient second-order minimization based visual tracking on moving face

    Le Duc Hanh, Chyi Yeu Lin, Chi Ying Lin, Koichi Hashimoto

    Proceedings of the IASTED International Conference on Robotics, Robo 2010 2010/12/01

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    This paper presents a visual feedback control system based on an efficient second-order minimization (ESM) [1] algorithm for tracking a face in motion. This research aims to control the camera installed at the end of a 3 DOF robot arm to fix its orientation to a face in motion so that the moving face appears in a constant position of the image. In this work, the ESM algorithm is firstly derived for feedback of the orientation of the 2D human face. Next, the conventional PD algorithm is applied to the tracking system to track and synchronize with the movement of the face. To track the face and also evaluate the effect of the synchronous motion of the robot system, a webcam is attached in the end effecter of the robot. If the orientation and position of the face of the jogger captured from the webcam appears stationary during its movement, the tracking and synchronous motion system will be proven effective. The experiments verified the effects. This implementation will be further applied on treadmills in which the entertaining LCD panel will synchronously move itself to match the motion of face of a jogger on a treadmill so that the jogger can watch a relatively stationary program on the LCD screen.

  74. Time-domain augmented reality based on locally adaptive video sampling

    Tatsuro Orikasa, Shingo Kagami, Koichi Hashimoto

    9th IEEE International Symposium on Mixed and Augmented Reality 2010: Science and Technology, ISMAR 2010 - Proceedings 2010/12/01

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    We propose a new approach for augmented reality, in which real-world scene images are augmented with video fragments manipulated in the time domain. The proposed system aims to display slow-motion video sequences of moving objects instantly without accumulated time lag so that a user can recognize and observe high-speed motion on the spot. Images from a high-speed camera are analyzed to detect regions with important visual features, which are overlaid on a normal-speed video sequence. ?2010 IEEE.

  75. ビジュアルサーボ顕微鏡の開発と応用

    橋本浩一, 丸三徳, 小原健

    自動制御連合講演会(CD-ROM) 2010/11/03

  76. Investigation on Speeding Up of Accelerometer Detection in a Video Sequence

    槙優一, 鏡慎吾, 橋本浩一

    電子情報通信学会技術研究報告 2010/07/08

  77. Online 3-D trajectory estimation of a flying object from a monocular image sequence

    R. Herrejon, S. Kagami, K. Hashimoto

    2009 IEEE/RSJ International Conference on Intelligent Robots and Systems, IROS 2009 2009/12/11

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    The problem considered here involves the design and application of a recursive algorithm to extract and predict the position of an object in a 3D environment from one feature correspondence from a monocular image sequence. Translational model involves an object moving in a parabolic path using projectile physics. A state-space model is constructed incorporating kinematic states, and recursive techniques are used to estimate the state vector as a function of time. The measured data are the noisy image plane coordinates of object match taken from image in the sequence. Image plane noise levels are allowed and investigated. The problem is formulated as a tracking problem, which can use an arbitrary large number of images in a sequence. The recursive estimation is done using Recursive Least Squares (RLS). Results on both synthetic and real imagery illustrate the performance of the estimator. ? 2009 IEEE.

  78. 1,000-fps visual feedback control of an active vision system over a high-load network

    Daisuke Wako, Shingo Kagami, Koichi Hashimoto

    Proceedings of the 11th IAPR Conference on Machine Vision Applications, MVA 2009 2009/12/01

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    A 1,000-fps visual tracking system over a realtime network based on the standard Ethernet and UDP/IP technologies is presented. The system consists of a high-speed vision system, a host PC that executes motor-control tasks on an RTOS, and an easyto- construct configuration for real-time communication to deliver the high-speed visual feature information obtained by the vision system to the host PC. Rather than introducing OS-dependent technologies for realtime communication, we have developed a dedicated network processing unit that handles all of the UDP/IP and Ethernet processing instead of the host PC. The visual information packets are forwarded in priority to the other background traffic by off-the-shelf Gigabit Ethernet switches with the IEEE802.1Q/p QoS mechanism. Experimental results show that the end-to-end delay through three Ethernet switches is below 180 μs with 20-μs jitters even under a high network load.

  79. Stability of switched stochastic systems in discrete-time

    Yasushi Iwatani, Shogo Arai, Koichi Hashimoto

    ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings 2009/12/01

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    This paper has considers the stability problem of stochastic and discrete-time switched systems with arbitrary switching. Several stability conditions based on Lyapunov theory are presented. In particular, a linear matrix inequality condition is derived for linear switched systems. ? 2009 SICE.

  80. Fast sensor scheduling for estimation of networked sensor systems

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings 2009/12/01

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    This paper addresses a sensor scheduling problem for a class of networked sensor systems whose sensors are spatially distributed and measurements are influenced by state dependent noise. Sensor scheduling is required to achieve power saving since each sensor operates with a battery power source. This paper considers the sensor scheduling problem for estimation of networked sensor systems, and a fast sensor scheduling algorithm for the estimation problem is presented. ? 2009 SICE.

  81. Position based visual servoing for catching a 3-D flying object using RLS trajectory estimation from a monocular image sequence

    R. Herrejon, S. Kagami, K. Hashimoto

    2009 IEEE International Conference on Robotics and Biomimetics, ROBIO 2009 2009/12/01

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    Online coordination of visual information with slow speed manipulator control is studied in the specific task of three dimensional robotic catching using position based visual servoing. The problem involves the design and application of a recursive algorithm to extract and predict the position of an object in a 3D environment from one feature correspondence from a monocular image sequence. Target translational model involves an object moving in a parabolic path using projectile physics. A state-space model is constructed incorporating kinematic states, and recursive techniques are used to estimate the state vector as a function of time. The measured data are the noisy image plane coordinates of object match taken from image in the sequence. Image plane noise levels are allowed and investigated. The target trajectory estimation is formulated as a tracking problem, which can use an arbitrary large number of images in a sequence and is done using Recursive Least Squares (RLS). Results are demonstrated by both simulations and experiments using a a real-time vision system and a six-degree-of-freedom robotic arm with speed capabilities of up to 1.0 m/s. ? 2009 IEEE.

  82. 視覚センサネットワークにおけるスケーラブルな視野接続推定

    近藤真, 鏡慎吾, 橋本浩一

    電子情報通信学会技術研究報告 2009/10/15

  83. ビジュアルサーボとその生体計測への応用

    橋本浩一

    生体・生理工学シンポジウム論文集 2009/09/24

  84. 3-D shape measurement using a high-speed projector-camera system for virtual haptization of an object surface

    戸澗宏太, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2009/05/24

  85. Fluorescent microscope system to track C. elegans

    丸三徳, 五十嵐康伸, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2009/05/24

  86. Weighted feature selection for visual servoing with occlusion recovery

    松川隆典, 岩谷靖, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2009/05/24

  87. Trajectory estimation of a flying object using high speed vision for catching

    Rafael Herrejon, Shingo Kagami, Koichi Hashimoto

    Proceedings of the 10th IASTED International Conference on Control and Applications, CA 2008 2008/12/01

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    This paper presents the current progress on a trajectory estimation of a flying object for a robotic catching system, using general purpose and readily available hardware. A recursive least squares (RLS) algorithm is used to extract and predict the position of a flying object in a 3D environment with the information gathered from only one camera.

  88. Multi-camera visual servoing of multiple micro helicopters

    Yasushi Iwatani, Kohou, Koichi Hashimoto

    Proceedings of the SICE Annual Conference 2008/12/01

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    This paper presents a multi-camera visual servo system for unmanned micro helicopters. IEEE 1394 cameras are placed on the ground, and they are linked in a network. A vision-based control method with occlusion handling is implemented to overcome the occlusion problem. ? 2008 SICE.

  89. Illumination-based real-time contactless synchronization of high-speed vision sensors

    Lei Hou, Shingo Kagami, Koichi Hashimoto

    2008 IEEE International Conference on Robotics and Biomimetics, ROBIO 2008 2008/12/01

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    To acquire images of a scene from multiple points of view simultaneously, the acquisition time of vision sensors should be synchronized. In this paper, an illumination-based synchronization technique derived from the phase-locked loop algorithm is proposed. Both Simulation results and experimental results show that the operation of vision sensor can be successfully locked to the corresponding edges of an intensitymodulated LED illumination signal in real time, as long as the feedback gain is empirically chosen with the help of MATLAB simulation. ? 2008 IEEE.

  90. Fast sensor scheduling for mobile sensor networks

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    Proceedings of the SICE Annual Conference 2008/12/01

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    In this paper, a sensor scheduling problem for a class of mobile sensor networks is addressed. It is assumed that the measurement noises of the sensors depend on the state of the system and all sensors have the same characteristics. In mobile sensor networks, the positions of the sensors have stochastic uncertainties. We show consider a sensor model which has stochastic uncertainties for the positions of the mobile sensors. The sensor scheduling problem is formulated as the model predictive control problem and a fast and optimal sensor scheduling algorithm is proposed. Computation time of the proposed algorithm is proportional to the number of the sensors and does not depend on the prediction horizon. ? 2008 SICE.

  91. Real-Time Identification of a Moving Object with an Accelerometer in a Stationary Camera View

    繁田脩, 鏡慎吾, 橋本浩一

    自動制御連合講演会(CD-ROM) 2008/11/22

  92. Visual Tracking for Endoscopic Surgery

    遠藤義英, 橋本浩一

    自動制御連合講演会(CD-ROM) 2008/11/22

  93. A development of a tracking and fluorescence microscope system and a research for a spontaneous motility of a paramecium

    小原健, 五十嵐康伸, 坪川宏, 中岡保夫, 橋本浩一

    自動制御連合講演会(CD-ROM) 2008/11/22

  94. Fluctuation of intracellular calcium ion concentration of a paramecium and motile behavior

    小原健, 五十嵐康伸, 坪川宏, 中岡保夫, 橋本浩一

    生体・生理工学シンポジウム論文集 2008/09/28

  95. Visual tracking with occlusion handling for visual servo control

    Yasushi Iwatani, Kei Watanabe, Koichi Hashimoto

    Proceedings - IEEE International Conference on Robotics and Automation 2008/09/18

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    This paper proposes a visual tracking method which is robust to occlusion. This paper also integrates the visual tracking method and visual servo control into a vision-based control method with occlusion handling. The proposed method chooses a set of correctly extracted image features, and it then obtains an estimate of all the image features from the correctly extracted image features. The estimation procedure makes it possible to track image features even when occlusion occurs. The method has low computational complexity, since the image Jacobian is used for the image feature selection and estimation. In addition, even when the controller fails to track a moving image feature, it can find the failed image feature without a global search over the entire image plane. As a result, it can track the failed image feature again quickly. ?2008 IEEE.

  96. Analysis of Synchronous/Asynchronous Sensor Systems

    荒井翔悟, 岩谷靖, 橋本浩一

    制御理論シンポジウム資料 2008/09/17

  97. Fast Sensor Scheduling with Communications among Sensors

    荒井翔悟, 岩谷靖, 橋本浩一

    制御理論シンポジウム資料 2008/09/17

  98. Video Projection with Reduced Motion Blur Using a High-Speed DMD Projector

    井上智之, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2008/06/05

  99. A development of a 3D cell tracking and fluorescence microscope system and its application to a cell motility research

    小原健, 五十嵐康伸, 若生大輔, 坪川宏, 中岡保夫, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2008/06/05

  100. A vision-based support system for micro helicopter control

    渡部渓, 岩谷靖, 野中謙一郎, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2008/06/05

  101. Implementation and evaluation of a real-time network system based on the standard Ethernet technology

    若生大輔, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2008/06/05

  102. Cooperative control of micro helicopters

    岩谷靖, KO Hou, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2008/06/05

  103. Response Visualization and Motion Control of Motile Cells

    橋本浩一, 五十嵐康伸, 小原健, 岩谷靖, FEI Xing Fang

    システム制御情報学会研究発表講演会講演論文集(CD-ROM) 2008/05/16

  104. Identifying a Moving Object with an Accelerometer in a Stationary Camera View

    繁田脩, 鏡慎吾, 橋本浩一

    電子情報通信学会技術研究報告 2008/05/15

  105. Dynamics modeling and real-time observation of galvanotaxis in Paramecium caudatum

    Naoko Ogawa, Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Bio-Mechanisms of Swimming and Flying: Fluid Dynamics, Biomimetic Robots, and Sports Science 2008/01/01

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    Paramecium caudatum, a kind of ciliates, exhibits very strong galvanotaxis; when a DC electric field is applied, cells are made to swim toward the cathode. In this article, we propose a novel physical scheme for Paramecium galvanotaxis to provide a quantitative explanation, using a bottom-up approach based on systems theory. We analytically derived the torque produced with respect to the cell angle and constructed equations of translational and rotational motion. Using the proposed model, we performed numerical simulations. We also performed a preliminary evaluation of the proposed model by using real data. Experimental data were obtained by using a real-time galvanotaxis observation system developed in our laboratory. We found that the simulated data was approximately in agreement with the experimental results. [Arranged from (Ogawa et al. 2005) and (Ogawa et al. 2006)].

  106. Image-based visual PID control of a micro helicopter using a stationary camera

    Kei Watanabe, Yuta Yoshihata, Yasushi Iwatani, Koichi Hashimoto

    Proceedings of the SICE Annual Conference 2007/12/01

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    This paper proposes an image-based visual servo control method for a micro helicopter. The helicopter does not have any sensors to measure its position or posture on the body. A stationary camera is placed on the ground, and it obtains image features of the helicopter. The differences between current features and given reference features are computed. PID controllers then make control input voltages for helicopter control, and they drive the helicopter. The proposed controller can avoid some major difficulties in computer vision such as numerical instability due to image noises or model uncertainties, since the reference is defined in the image frames. An experimental result demonstrates that the proposed controller can keep the helicopter in a stable hover. ? 2007 SICE.

  107. Multi-camera visual servoing of a micro helicopter under occlusions

    Yuta Yoshihata, Kei Watanabe, Yasushi Iwatani, Koichi Hashimoto

    IEEE International Conference on Intelligent Robots and Systems 2007/12/01

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    This paper proposes a switched visual feedback control method for a micro helicopter under occlusions. Two stationary cameras are placed on the ground. They track four black balls attached to rods connected to the bottom of the helicopter. The control input is computed by using the errors between the positions of the tracked objects and pre-specified reference values for them. The multi-camera configuration is redundant for helicopter control, but it enables us to design a switched controller which is robust against occlusions. An occlusion occurs when an object moves across in front of a camera or when the background color happens to be similar to the color of a tracked object. Multi-camera systems are suitable for designing a robust controller under occlusions, since even when a tracked object is not visible in a camera view, other cameras may track it. The authors have proposed a camera selection approach: If an occlusion is detected in a camera view then the other camera is used to control the helicopter. This paper presents another switched visual feedback control method for a micro helicopter under occlusions. This is called the image feature selection approach. This paper assumes that at most one tracked object is occluded at each time to simplify notations, although we can draw general conclusions. The errors between the positions of the tracked objects and pre-specified references are used to compute the control input, when all the tracked objects are visible. If one of the tracked objects is invisible, then the controller uses the errors given by the other three tracked objects. The position of the occluded object is also estimated by using the other three tracked objects. ?2007 IEEE.

  108. Optimal sensor scheduling of sensors in a sensor network for mobile robot navigation

    Shogo Arai, Yasushi Iwatani, Koichi Hashimoto

    Proceedings of the American Control Conference 2007/12/01

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    This paper examines sensor scheduling problems for multi-sensor systems when only one sensor is allowed to take a measurement at each time. In particular, this paper formulates an optimal sensor scheduling problem for mobile robot exploration and navigation using a sensor network whose sensors are placed on the ground. The sensors are position sensors, and each measurement noise depends on the distance between the positions of the sensor and the robot. This paper provides an optimal sensor selection policy which minimizes a given quadratic cost function. In addition, we characterize the set of points where the available sensor is switched under the optimal sensor scheduling. ? 2007 IEEE.

  109. 3,000-fps 3-D shape measurement using a high-speed camera-projector system

    Joji Takei, Shingo Kagami, Koichi Hashimoto

    IEEE International Conference on Intelligent Robots and Systems 2007/12/01

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    This paper proposes a high frame rate 3-D shape measurement system based on structured light projection using temporally-coded binary patterns. This system consists of a DMD (Digital Micromirror Device) projector and a high-speed camera, both of which operate at over 6,000 fps. Introducing an image processing algorithm of detecting and tracking the projected light patterns enables frame-by-frame 3-D image measurement. Experimental results show that the proposed algorithms worked effectively, and the system achieved 3-D imaging at 3,350 fps. ?2007 IEEE.

  110. A cellular automaton model for collective motion of microorganisms

    Yasushi Iwatani, Koichi Hashimoto, Koichi Hashimoto, Yuki Deguchi

    IFAC Proceedings Volumes (IFAC-PapersOnline) 2007/12/01

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    This paper proposes a cellular automaton model for collective motion of Paramecia which are unicellular microorganisms. The proposed model represents motion combined with four types of locomotor behavior of Paramecia: the avoiding reaction, the escape reaction, galvanotaxis and chemotaxis. The avoiding reaction and the escape reaction are described by an internal state variable of each Paramecium in our model. A potential function is introduced in order to express galvanotaxis and chemotaxis. The validation of the proposed model is demonstrated by comparing simulation results with observations. ? 2007 IFAC.

  111. Multi-camera visual servoing of an ummaned helicopter

    渡部渓, 岩谷靖, 橋本浩一

    自動制御連合講演会(CD-ROM) 2007/11/23

  112. Dynamic selection of image features for visual servoing

    岩谷靖, 渡部渓, 橋本浩一

    制御理論シンポジウム資料 2007/09/05

  113. Development of a 3,000-fps 3D Imaging System Using a High-Speed Projector

    武井丈治, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2007/05/10

  114. Moving Object Identification by Fusion of Image and Acceleration Sensors

    繁田脩, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2007/05/10

  115. A 2-D Mesh Architecture with SIMD and Operation-Pipeline Modes for High Frame Rate Visual Processing

    岩田奈央, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2007/05/10

  116. Development of a microscope system combining tracking and fuorescent observation

    小原健, 若生大輔, 五十嵐康伸, 坪川宏, 中岡保夫, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2007/05/10

  117. 微生物を用いたアクティブセンシング

    橋本浩一

    第6回SORSTジョイントシンポジウム講演要旨集 超微量物質の同定/認識の化学 平成19年 2007/01/30

  118. 細胞位置制御機能付き蛍光観察顕微鏡システムの開発 1

    橋本浩一

    第6回SORSTジョイントシンポジウム講演要旨集 超微量物質の同定/認識の化学 平成19年 2007/01/30

  119. 細胞位置制御機能付き蛍光観察顕微鏡システムの開発 2

    橋本浩一

    第6回SORSTジョイントシンポジウム講演要旨集 超微量物質の同定/認識の化学 平成19年 2007/01/30

  120. 微生物を用いた電場勾配のアクティブセンシング

    橋本浩一

    第6回SORSTジョイントシンポジウム講演要旨集 超微量物質の同定/認識の化学 平成19年 2007/01/30

  121. Relationships between camera performance and control performance in visual control systems

    K. Watanabe, Y. Iwatani, K. Hashimoto, S. W. Kagami, Y. Minier

    2006 SICE-ICASE International Joint Conference 2006/12/01

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    This paper presents relationships between camera performance and control performance in visual control systems. The control system consists of an inverted pendulum system, two vision sensors, an LQ regulator. Numerical examples demonstrate that a high speed vision system must have a high resolution to balance the pendulum upright under difference approximation, but a full-order observer makes the control performance good for high speed vision systems. ? 2006 ICASE.

  122. Evaluation and suppression of overrun of microorganisms using dynamics model for microrobotic application

    Naoko Ogawa, Hiromasa Oku, Koichi Hashimoto, Koichi Hashimoto, Masatoshi Ishikawa

    Intelligent Autonomous Systems 9, IAS 2006 2006/12/01

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    Our goal is to utilize living microorganisms as smart, autonomous mi-crorobots. In previous work, we constructed a dynamics model of Paramecium cells for navigation using galvanotaxis (locomotion response to an applied electric field). In this paper, an overrun phenomenon, which affects the control performance, is evaluated using the proposed dynamics model, and it is found that the turning trajectory is independent of the individual ciliary forces. A trapping experiment based on this model is performed and better performance is achieved. This is an important step toward our eventual goal of using living cells as autonomous microrobots. ? 2006 The authors.

  123. Visual feedback control for a cluster of microorganisms

    Koichi Hashimoto, Kiyonori Takahashi, Naoko Ogawa, Hiromasa Oku

    2006 SICE-ICASE International Joint Conference 2006/12/01

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    A novel method is proposed to control a cluster of microorganisms as micro-robots by utilizing visual feedback. A visual feedback system is constructed to control microorganisms using galvanotaxis. A task of micro-manipulation of a small object is demonstrated by using a lot of paramecia. The experimental results support the feasibility of micro-manipulation by a cell cluster using visual feedback control. It is expected that the proposed method will be applicable for various micro-robotic tasks in future. ? 2006 ICASE.

  124. Optimal sensor scheduling in sensor networks

    荒井翔悟, 岩谷靖, 橋本浩一

    制御理論シンポジウム資料 2006/09/19

  125. Trajectory Planning of Motile Cell for Microrobotic Application

    尾川順子, 奥寛雅, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2006/05/26

  126. A Real-Time Network System Interoperable with the Standard Ethernet

    青木良輔, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2006/05/26

  127. Control of Multi-Agent Systems Based on Collective Behavior of Animals

    古市淳也, 橋本浩一, 岩谷靖, 鏡慎吾

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2006/05/26

  128. Tracking and Decoding of Projected Structured Light Patterns for High-Speed 3D Imaging

    武井丈治, 鏡慎吾, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2006/05/26

  129. Feature-based visual servoing of a helicopter

    徳多正行, 橋本浩一, 岩谷靖, 鏡慎吾

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2006/05/26

  130. Visual servoing without Jacobian using modified simplex optimization

    Kanako Miura, Koichi Hashimoto, Jacques Gangloff, Michel De Mathelin

    Proceedings - IEEE International Conference on Robotics and Automation 2005/12/01

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    In this paper, we present a robot positioning task with respect to a static target using visual servoing and optimization techniques. The vision system is uncalibrated. The displacements of the robot are generated in real time in order to minimize an objective function using a simplex method and a Newton-like method. Our method allows for the inclusion of constraints in the image as well as in joint-space. On-line image Jacobian estimation runs at the same time, and is used to accelerate convergence near the target. We successfully validate this method with simulations under the graphic library OpenGL, and practical experiment with industrial manipulators. ? 2005 IEEE.

  131. A method of personal positioning for indoor customer tracking utilizing wearable inertial sensors

    Yasuaki Ohtaki, Dan Hu, Koichi Hashimoto, Hikaru Inooka

    Proceedings of SPIE - The International Society for Optical Engineering 2005/12/01

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    In order to achieve in-store customer traffic tracking, a method should be capable of catching personnel routings and ambulation trajectories while shopping. In this study, we presented a practical method for indoor personnel positioning, especially focusing on ambulatory path recognition and trajectory estimation. The method was designed to be autonomous needless of neither external measures nor cumbersome installations to a store environment. To avoid an inherent problem of trajectory estimation through Dead-Reckoning algorithm, an advanced probabilistic Map Matching method was applied utilizing a Particle filtering technique. The experiment was performed to confirm the utility of the proposed method in a small retail store. The result showed that the proposed method provided feasible successes in tracking personnel positioning.

  132. Dynamics model of Paramecium galvanotaxis for microrobotic application

    Naoko Ogawa, Hiromasa Oku, Hiromasa Oku, Koichi Hashimoto, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings - IEEE International Conference on Robotics and Automation 2005/12/01

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    We propose a dynamics model of galvanotaxis (locomotor response to electrical stimulus) of the protozoan Paramecium. Our purpose is to utilize microorganisms as microrobots by using galvanotaxis. For precise and advanced actuation, it is necessary to describe the dynamics of galvanotaxis in a mathematical and quantitative manner in the framework of robotics. However, until now the explanation of Paramecium galvanotaxis in previous works has remained only qualitative. In this paper, we construct a novel model of galvanotaxis as a minimal step to utilizing Paramecium cells as micro-robots. Numerical experiments for our model demonstrate realistic behaviors, such as U-turn motions, like those of real cells. ?2005 IEEE.

  133. Discrete convex analysis in control engineering

    岩谷靖, 橋本浩一

    制御理論シンポジウム資料 2005/10/30

  134. トラッキング顕微鏡による遊泳する微生物のin vivo計測

    奥寛雅, 尾川順子, 橋本浩一, 石川正俊

    バイオイメージング 2005/09/26

  135. Nonholonomy of Paramecium Cell in Galvanotactic Actuation

    尾川順子, 奥寛雅, 橋本浩一, 石川正俊

    日本ロボット学会学術講演会予稿集(CD-ROM) 2005/09/15

  136. Evaluation of Overrun in Paramecium Galvanotaxis using its Dynamics Model

    尾川順子, 奥寛雅, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2005/06/09

  137. 2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2004)

    HASHIMOTO Koichi

    計測と制御 = Journal of the Society of Instrument and Control Engineers 2005/02/10

  138. Examination of ball lifting task using a mobile robot

    Ryosuke Mon, Koichi Hashimoto, Fumiaki Takagi, Fumio Miyazaki

    2004 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS) 2004/12/01

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    This paper presents an examination of ball lifting task using a mobile robot. We have proposed a trajectory control method for tracking and catching a ball flying in 3D space based on GAG (Gaining Angle of Gaze) strategy. The strategy allows single camera configuration and it is robust against camera motion errors. This simple method was implemented to a mobile robot and we demonstrated the quick motion to catch balls. We consider the extension of this method for the ball lifting task and demonstrate the robot can track and rebound a ball repeatedly as a basic examination of the task.

  139. Single-cell level continuous observation of microorganism galvanotaxis using high-speed vision

    Naoko Ogawa, Hiromasa Oku, Hiromasa Oku, Koichi Hashimoto, Koichi Hashimoto, Masatoshi Ishikawa

    2004 2nd IEEE International Symposium on Biomedical Imaging: Macro to Nano 2004/12/01

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    A novel system for measurement of motile microorganism galvanotaxis using high-speed vision is presented. Our goal is to construct a smart microsystem composed of many controlled microorganisms called "Organized Bio-Modules" (OBM). The OEM system utilizes galvanotaxis (intrinsic reaction to electrical stimulus) of microorganisms for actuation. For evaluation of taxis, continuous observation of a moving single cell in a sufficiently large working area without fixation is needed. Using high-speed vision, we developed a system for continuous evaluation of galvanotaxis of freely swimming cells in a large area at the single-cell level. Experimental results demonstrate the continuous measurement of galvanotaxis of a Paramecium caudatum cell moving in a 3.5-mm-square area for 18 s with 1 μs precision. ? 2004 IEEE.

  140. ロボットにおける視覚と制御

    橋本浩一

    日本機械学会計算力学講演会講演論文集 2004/11/17

  141. Ball Lifting Task using a Hand-Eye Manipulator

    森亮介, 橋本浩一, 宮崎文夫

    日本ロボット学会学術講演会予稿集(CD-ROM) 2004/09/15

  142. Tracking and catching of 3D flying target based on GAG strategy

    Ryosuke Mori, Koichi Hashimoto, Fumio Miyazaki

    Proceedings - IEEE International Conference on Robotics and Automation 2004/07/05

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    We have proposed a GAG (Gaining Angle of Gaze) strategy for ball catching. The strategy allows single camera configuration and it is robust against camera motion errors. It is superior than previously proposed strategies in the field of experimental psychology in the catchable region and robustness. In this paper, we apply the GAG strategy for tracking and catching a 3D flying target The GAG strategy is extended for hand-eye robot manipulators and ball catching performance is evaluated by simulations and experiments.

  143. Dynamic active catching using a high-speed multifingered hand and a high-speed vision system

    Yoshiro Imai, Akio Namiki, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings - IEEE International Conference on Robotics and Automation 2004/07/05

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    A new robotic hand system with high-speed finger motion of 180 [deg] per 0.1 [s] has been developed. With high-speed visual feedback at a rate of 1 [kHz], various dynamic manipulations are achieved. As examples of dynamic manipulation we describe the dynamic active catching tasks for a falling ball and a falling cylinder using a high-speed multifingered hand. We achieved these difficult tasks by utilizing high-speed motion and impact forces actively. Experimental results using active catching strategy based on visual feedback are shown.

  144. Motile cell galvanotaxis control using high-speed tracking system

    Naoko Ogawa, Hiromasa Oku, Hiromasa Oku, Koichi Hashimoto, Koichi Hashimoto, Masatoshi Ishikawa

    Proceedings - IEEE International Conference on Robotics and Automation 2004/07/05

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    We propose a control system of motile cells. Our goal is to construct a large-scale Organized Bio-Modules (OBM) in which microorganisms are controlled as micro-size smart robots in an organized way. For the first step, we have developed & visual feedback control system of Paramecium caudatum cells. Tracking method is used for observation of moving cells with high magnification. Cells swim in a chamber and their positions are measured by high-speed vision. The chamber position is visually controlled to track a specific cell. The cell motion is controlled electrically by utilizing the galvanotaxis (intrinsic reaction to electrical stimulus) of microorganisms. Experimental results of region-trapping demonstrate the possibility of the OBM system.

  145. Camera pose estimation from less than eight points in visual servoing

    Graziano Chesi, Graziano Chesi, Koichi Hashimoto

    Proceedings - IEEE International Conference on Robotics and Automation 2004/07/05

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    The problem of estimating the camera pose in eye-in-hand visual servoing is considered for the case in which the available point correspondences are less than eight Two strategies based on the properties of the essential matrix are hence described, which mainly consist of the computation of the roots of a one-variable polynomial in the seven points case and the minimization of a two-variables polynomial through a gradient algorithm in the six points case.

  146. Robotic Catching Using a High-speed Hand with soft fingertips.

    大西政彦, 並木明夫, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  147. Visual Servoing based on Switching Algorithm.

    篠原亮, 森亮介, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  148. High-Speed Focus Tracking of A Dynamic Microscopic Object Using 1-kHz High-Speed Variable-Focus Lens.

    奥寛雅, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  149. Microscope Focusing using High-speed Vision for Three-dimensional Tracking of Microorganism.

    THEODORUS, 奥寛雅, 石川正俊, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  150. A Current Controlled Electrostimulation Device for the Motion Control of Paramecia.

    山根淳, 尾川順子, 奥寛雅, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  151. An active contour model for tracking a microorganism on a high-speed vision system

    竹本征人, 尾川順子, 奥寛雅, 石川正俊, 橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  152. Realization of Tracking and Catching a 3D Flying Target based on GAG Strategy.

    森亮介, 橋本浩一, 宮崎文夫

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2004/06/18

  153. Linux系OSによるリアルタイム制御

    熊谷正朗, 森友一朗, 橋本浩一

    計測と制御 2004/06/10

  154. 高速多指ハンドと高速視覚によるダイナミックキャッチング

    今井睦朗, 並木明夫, 橋本浩一, 石川正俊, 金子真, 亀田博, 小山順二

    ロボティクスシンポジア予稿集 2004/03/08

  155. Variable-focus lens with 1-kHz bandwidth

    Hiromasa Oku, Koichi Hashimoto, Masatoshi Ishikawa

    Optics Express 2004/01/01

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    This paper proposes a variable-focus lens with 1-kHz bandwidth. The lens transforms its shape rapidly using the liquid pressure generated by a piezo stack actuator. This mechanism also includes a built-in motion amplifier with high bandwidth to compensate for the short working range of the piezo stack actuator. Prototypes have been developed to validate the proposed design. A 1-kHz bandwidth of the lenses was confirmed by measuring the frequency responses. Refractive power ranging from -1/167 to 1/129 mm -1 and a maximum resolution of 12.3 cycles/mm were attained. ? 2004 Optical Society of America.

  156. Effects of camera calibration errors on static-eye and hand-eye visual servoing

    Graziano Chesi, Koichi Hashimoto

    Advanced Robotics 2003/12/29

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    Effects of camera calibration errors for the point-to-point task are investigated in static-eye and hand-eye visual servoing realized with position-based and image-based control laws. For these four configurations, the effect of uncertainty on intrinsic and extrinsic parameters is analyzed. The results show local stability for all configurations under small calibration errors. However, a steady-state error is found in the hand-eye position-based configuration. Simulations have been carried out in order to confirm the theoretical results and evaluate the effects of the uncertainty in terms of the stability region. Another contribution of the paper consists of providing a method for estimating the stability region robust against uncertainty directions for the static-eye position-based case with uncertainty on the camera centers.

  157. A review on vision-based control of robot manipulators

    Koichi Hashimoto

    Advanced Robotics 2003/12/29

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    Recent vision-based control algorithms for robot manipulators are reviewed. Vision is essential for robots working in an unstructured environment. There are numerous research results in vision-based control. Thus, the scope of this review is limited to providing a brief description on visual servo schemes for manipulators. First, a control architecture for vision-based control is reviewed and some basic ideas for visual servo control are presented. On the basis of these ideas recent research results, especially robust and globally stable controllers, are discussed in detail.

  158. Improving camera displacement estimation in eye-in-hand visual servoing: A simple strategy

    Graziano Chesi, Graziano Chesi, Koichi Hashimoto

    Proceedings - IEEE International Conference on Robotics and Automation 2003/12/09

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    The problem of estimating the camera displacement in eye-in-hand visual servoing is considered, and a simple strategy based on the idea that the estimates accuracy can be improved if the fact that the point correspondences used throughout the visual servoing are relative to the same 3D points is taken into account is presented. In particular, an accurate scaled euclidean reconstruction of the object is built in the first steps of the visual servoing by suitably using existing linear methods, and from this reconstruction the camera displacement is suitably estimated. Extensive proves performed in random conditions have shown that the proposed approach provides significantly better results with respect to the existing linear methods actually used in visual servoing.

  159. A switching control law for keeping features in the field of view in eye-in-hand visual servoing

    Graziano Chesi, Graziano Chesi, Koichi Hashimoto, Domenico Prattichizzo, Antonio Vicino

    Proceedings - IEEE International Conference on Robotics and Automation 2003/12/09

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    In this paper, a visual servoing strategy for dealing with the problem of keeping the observed points in the camera field of view is proposed. The approach consists of a switching control law based on camera displacement estimation and regulated from the position of the points in the image. In absence of uncertainties on the intrinsic parameters and optical axis direction, global stability is achieved and all points are kept in the field of view. Moreover, the trajectory length is minimized in the rotational space and, for some cases, also minimized in the translational one. Robustness against uncertainties is also guaranteed.

  160. A Review on Vision-Based Control of Robot Manipulators

    Koichi Hashimoto

    Advanced Robotics 2003/10

  161. Realization of Ball Catching Task using a Mobile Robot

    森亮介, 橋本浩一, 宮崎文夫

    日本ロボット学会学術講演会予稿集(CD-ROM) 2003/09/20

  162. Tracking Task of a Three-Dimensional Moving Object based on Visual Servoing

    森亮介, 橋本浩一, 宮崎文夫

    日本ロボット学会学術講演会予稿集(CD-ROM) 2003/09/20

  163. イメージインテンシファイア付高速視覚による微生物トラッキングシステム

    奥寛雅, 尾川順子, 橋本浩一, 石川正俊

    センシングフォーラム資料 2003/09/16

  164. Dynamic Catching Using a High-speed Multifingered Hand

    今井睦朗, 並木明夫, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2003/05/23

  165. Configuration and Robustness in Visual Servo Systems

    橋本浩一

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2003/05/23

  166. Response Measurement of Paramecia for Realization of Organized Bio-Modules

    尾川順子, 奥寛雅, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集(CD-ROM) 2003/05/23

  167. The Robot Gesture Generation Approach Based on Appearance from the User Viewpoint

    平松雅巳, 八木康史, 橋本浩一, 谷内田正彦

    日本ロボット学会誌 2003/04/15

  168. Preface

    Koichi Hashimoto

    Advanced Robotics 2003/01/01

  169. Advanced Robotics: Preface

    Koichi Hashimoto

    Advanced Robotics 2003/01/01

  170. Static-eye against hand-eye visual servoing

    Graziano Chesi, Koichi Hashimoto

    Proceedings of the IEEE Conference on Decision and Control 2002/12/01

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    In this paper, a comparison between static-eye and hand-eye configurations for the point-to-point visual servoing task realized with position-based and image-based control laws is presented. For these four configurations, the effect of uncertainty on intrinsic and extrinsic calibration parameters is investigated. The results show local stability for all configurations with small calibration errors and a steady state error for the hand-eye position-based one. Simulations have been carried out in order to confirm the theoretical results and evaluate the effects of the uncertainty in terms of stability region.

  171. A self-calibrating technique for visual servoing

    Graziano Chesi, Koichi Hashimoto

    Proceedings of the IEEE Conference on Decision and Control 2002/12/01

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    In this paper, a self-calibration procedure which is carried out in parallel to visual servoing algorithms is proposed. Our approach exploits the singular values property of the essential matrix and it is based on the introduction of a suitable cost function and a criterion for minimizing it on-line in order to update the current estimate of the intrinsic parameters. The behaviour of the visual servoing is hence improved for the case of unknown intrinsic parameters since the self-calibration procedure allows the robot control to work closer to the ideal case. Simulation results for position-based, image-based and 2 1/2 D visual servoing show also that the correct estimation of the intrinsic parameters is achieved in few steps of the required ones by the visual servoing algorithm to converge.

  172. Development of a High-speed Hand System Based on Visual Feedback

    今井睦朗, 並木明夫, 橋本浩一, 金子真, 石川正俊

    日本ロボット学会学術講演会予稿集(CD-ROM) 2002/10/12

  173. A Parallel Snake Algorithm for Vision Chip System

    山野高将, 中坊嘉宏, 橋本浩一, 石川正俊

    日本ロボット学会学術講演会予稿集(CD-ROM) 2002/10/12

  174. Motion Measurement of a Rapidly Rotating Object Using a Vision Chip.

    渡辺義浩, 小室孝, 鏡慎吾, 橋本浩一, 石川正俊

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 2002/06/07

  175. A mode switching estimator for visual servoing

    K. Hashimoto, K. Nagahama, T. Noritsugu

    Proceedings - IEEE International Conference on Robotics and Automation 2002/01/01

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    The paper proposes an algorithm for object motion estimation. It is assumed that the object motion is composed of primitive motions and the total motion is generated by simply switching these primitive motions. The proposed estimator for visual servoing has two stages: Kalman filter and validation gate. Models of primitive motions are connected and an augmented system is designed. Each primitive motion corresponds to an invariant subset in the state space of the augmented system. The motion switching is generated by a state transition among the state subsets. A Kalman filter is used to predict the object motion on the basis of the augmented system. Switching of actual object motion is detected by the validation gate. The validation gate is implemented by nonlinear least square fitting of the current state onto the nearest state subsets. Real-time experiments of object tracking demonstrate the effectiveness of the proposed estimator.

  176. ビジュアルサーボイング ビジュアルサーボにおける予測と感度

    橋本浩一

    計測と制御 2001/09/10

  177. ビジュアルサーボにおける予測と感度

    Koichi Hashimoto

    計測と制御 2001/09

  178. Message Transfer Protocol for RealTime-Linux. Controlling 7DOF robot manipulator.

    平松雅巳, 八木康史, 橋本浩一, 谷内田正彦

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 2001/06/08

  179. Visual Feedback Control of Cart based on Path Planning in Image Plane.

    橋本浩一, 蘇昭仁, 則次俊郎

    日本機械学会論文集 C編 2000/12/25

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    This paper presents a visual feedback control scheme for nonholonomic wheeled robots. The visual servo controller guides the robot to the goal by observing the feature points in the environment. The feature points are controlled directly in the image plane by using an image-based controller. Thus the possibility of missing the feature points is reduced considerably. Simulations are carried out to evaluate the validity of the proposed scheme and experiments on a radio controlled car with a CCD camera are also given. ? 2000, The Japan Society of Mechanical Engineers. All rights reserved.

  180. Potential switching control in visual servo

    Koichi Hashimoto, Toshiro Noritsugu

    Proceedings - IEEE International Conference on Robotics and Automation 2000/12/03

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    Stability of feature-based visual servo controllers proposed so far is local. The initial features far from the reference may converge to features different from the reference or even worse they may not converge. In this paper, stability of feature-based visual servo is considered by using potential. The stable region is visualized and artificial potential switching is proposed to extend the stable region.

  181. Potential problems and switching control for visual servoing

    K. Hashimoto, T. Noritsugu

    IEEE International Conference on Intelligent Robots and Systems 2000/12/01

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    This paper proposes a potential switching scheme that enlarges stable region of feature-based visual servoing. Relay images that interpolate initial and reference image features are generated by using affine transformation. Artificial potentials defined by the relay images are patched around the reference point of the original potential to enlarge the stable region. Simulations with simplified configuration and experiments on a 6 DOF robot show the validity of the proposed control scheme.

  182. Enlargement of Stable Region in Visual Servo-Image Interpolation Approach.

    田中浩平, 橋本浩一, 則次俊郎

    日本ロボット学会学術講演会予稿集 2000/09/12

  183. A Path Planning in the Image Plane.

    橋本浩一, 田中浩平, 則次俊郎

    日本ロボット学会学術講演会予稿集 2000/09/12

  184. A Control of Blimp with Visual Servo.

    田中浩平, 橋本浩一, 則次俊郎

    日本ロボット学会学術講演会予稿集 2000/09/12

  185. Visual Servoing with Variable Object Motion Pattern Prediction.

    長浜圭郎, 橋本浩一, 則次俊郎

    日本ロボット学会学術講演会予稿集 2000/09/12

  186. User's viewpoint based gesture generation.

    平松雅巳, 八木康史, 橋本浩一, 谷内田正彦

    日本ロボット学会学術講演会予稿集 2000/09/12

  187. Potential Switching Control in Visual Servo.

    橋本浩一, 田中浩平, 則次俊郎

    計測自動制御学会論文集 2000/08/31

  188. A Comparative Study of Image Interpolation in Visual Servo.

    橋本浩一, 田中浩平, 則次俊郎

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 2000/05/11

  189. Development of Multiple-D.O.F Flexible Actuator using Rubber Balls.

    則次俊郎, 橋本浩一, 高岩昌弘, 冨家滋晃

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 2000/05/11

  190. RT‐Linuxに基づく視覚サーボシステム 画像処理とロボット制御をLinuxで実現

    橋本浩一

    画像ラボ 2000/04/01

  191. 中継画像を用いた視覚サーボの安定領域拡大について

    橋本浩一, 田中浩平, 則次俊郎, 高岩昌弘

    ロボティクスシンポジア予稿集 2000/03/26

  192. 視覚サーボにおける中継画像生成法の比較

    橋本浩一, 田中浩平, 則次俊郎, 高岩昌弘

    ロボティクスシンポジア予稿集 2000/03/26

  193. 視覚サーボを用いた車両型ロボットの位置制御

    橋本浩一, 蘇昭仁, 則次俊郎, 高岩昌弘

    ロボティクスシンポジア予稿集 2000/03/26

  194. 視覚サーボにおけるポテンシャル切り替え制御

    橋本浩一

    ロボティクスシンポジア予稿集 2000/03/26

  195. 714 Energy Saving Control of Air Active Suspension Using Low Pressure Supply

    NORITSUGU Toshiro, SUGA Yasuhiro, HASHIMOTO Koichi, TAKAIWA Masahiro

    講演論文集 2000/02/25

  196. 710 Haptic lnterface using Pneumatic Silicon Sheet

    TSUTSUI Shingo, NORITSUGU Toshiro, HASHIMOTO Koichi, TAKAIWA Masahiro

    講演論文集 2000/02/25

  197. アクティブエアサスペンションの低圧化による省エネルギー制御

    則次俊郎, 須賀康博, 橋本浩一, 高岩昌弘

    日本機械学会中国四国支部総会・講演会講演論文集 2000/02/25

  198. 空気圧シリコンシートを用いた触覚情報呈示装置

    筒井慎吾, 則次俊郎, 橋本浩一, 高岩昌弘

    日本機械学会中国四国支部総会・講演会講演論文集 2000/02/25

  199. 2P1-47-081 ゴムボールを用いた多自由度フレキシブルアクチュエータの開発

    冨家 滋晃, 則次 俊郎, 橋本 浩一, 高岩 昌弘

    ロボティクス・メカトロニクス講演会講演概要集 2000

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    1つの関節に多自由度を持たせる, 柔らかい関節というコンセプトに基づき新しいアクチュエータを考案した。6つのゴムボールをアクチュエータとし, それぞれ正6角形のシャフトに固定する。ゴムボールの膨張はフレームにより拘束する。このゴムボールの圧力差によりシャフトがx, y, z軸周りに回転する3自由度のアクチュエータである。本稿ではこのアクチュエータの動作について解析し, 実際に製作したアクチュエータにより動作実験を行っている。

  200. 2A1-66-087 視覚サーボにおける中継画像生成法の比較

    橋本 浩一, 田中 浩平, 則次 俊郎

    ロボティクス・メカトロニクス講演会講演概要集 2000

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    注視対象物のカメラ画像を目標の画像に収束させることによりロボットのハンド位置を目標位置に導く特徴ベース視覚サーボ法はその安定性が局所的であることは知られているが, 初期画像と目標画像の間に中継画像を内挿することにより安定領域を拡大させることが可能である。そこで本研究では, いくつかの中継画像生成法を例にとり, それらの間の比較を行うことで, その中継画像のより良い生成方法を検討する。

  201. Visual servoing based on object motion estimation

    K. Nagahama, K. Hashimoto, T. Noritsugu, M. Takaiawa

    IEEE International Conference on Intelligent Robots and Systems 2000/01/01

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    The paper proposes a visual sevoing scheme based on object motion estimation. A long term prediction algorithm with multiple motion models is developed. The object position and velocity of a few hundreds of samples ahead is predicted. Thus object tracking without visual information can be achieved during this period. As an example, pick up task of moving object is conducted. The task requires object motion prediction because the hand mounted camera loses the object when the hand approaches the object. Simulations show convergence of prediction. Real-time experiments of picking up a moving object demonstrate the effectiveness of the proposed long term predictor.

  202. Potential problems in visual servo

    Koichi Hashimoto, Kouhei Tanaka, Toshiro Noritsugu

    IECON Proceedings (Industrial Electronics Conference) 2000/01/01

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    ? 2000 IEEE. Stability of feature-based, visual servo controllers proposed so far is local. 1 The initial features far from the reference may converge to features different from, the reference or even worse they may not converge. In this paper, stability of feature-based visual servo is considered by using potential. The stable region is visualized and artificial potential switching is proposed to extend the stable region.

  203. Toward the breakthrough of Pneumatic System.

    則次俊郎, 橋本浩一, 高岩昌弘

    フルードパワーシステム講演会講演論文集 1999/10/19

  204. Mathematical Modeling of Yoyo and an Implementation of Robotic Yoyo Based on Visual Feedback.

    橋本浩一, 則次俊郎

    システム制御情報学会論文誌 1999/10

  205. Toward the breakthrough of Pneumatic System

    則次 俊郎, 橋本 浩一, 高岩 昌弘

    油空圧講演論文集 1999/10/01

  206. Study on the function enhancement of mechanical system with intelligent control technology.

    則次俊郎, 橋本浩一, 高岩昌弘

    ハイテクインフォメーション 1999/07/30

  207. An Implementation of Visual Servo System on RT-Linux.

    橋本浩一, 則次俊郎

    日本ロボット学会誌 1999/07/15

  208. Visual Servoing of Nonholonomic Robot Cart.

    蘇昭仁, 橋本浩一, 則次俊郎, 高岩昌弘

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 1999/06/12

  209. Visual Servoing to guide to the distant image. With affin parameter.

    田中浩平, 橋本浩一, 則次俊郎, 高岩昌弘

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 1999/06/12

  210. Task Assist Manipulator Using Rubber Artificial Muscle.

    大皿敏之, 則次俊郎, 橋本浩一, 高岩昌弘

    日本機械学会中国四国支部総会・講演会講演論文集 1999/02/26

  211. Development of Planar-Type SoftActuator Using Silicon Rubber Balls.

    井上隆志, 則次俊郎, 橋本浩一, 高岩昌弘

    日本機械学会中国四国支部総会・講演会講演論文集 1999/02/26

  212. Visual servoing with linearized observer

    Koichi Hashimoto, Toshiro Noritsugu

    Proceedings - IEEE International Conference on Robotics and Automation 1999/01/01

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    One of the most important problem in feature-based visual servoing is the slow sampling rate and the delay of the camera that can make the closed loop system oscillative or unstable easily. In this paper, a linearized observer that estimates the object velocity and updates the visual information with the joint sampling rate is proposed. Stability of the observer-based control system and effectiveness of the observer are verified by experiments on a PUMA 560 robot.

  213. Improvement of Characteristics of Electric Power Steering System by using Disturbance Observer.

    佐藤直哉, 則次俊郎, 橋本浩一, 高岩昌弘, 竹原伸

    日本機械学会中国四国支部地方講演会講演論文集 1998/10

  214. Visual Servoing of Nonholonomic Robot Cart.

    蘇昭仁, 橋本浩一, 則次俊郎, 高岩昌弘

    日本機械学会中国四国支部地方講演会講演論文集 1998/10

  215. Sensory Feedback System of Mechanical Impedance using ER Fluid.

    筒井慎吾, 則次俊郎, 橋本浩一, 高岩昌弘

    日本機械学会中国四国支部地方講演会講演論文集 1998/10

  216. Visual Servoing with Redundant Features.

    橋本浩一, 青木篤人, 則次俊郎

    日本ロボット学会誌 1998/04

  217. Performance and sensitivity in visual servoing

    Koichi Hashimoto, Toshiro Noritsugu

    Proceedings - IEEE International Conference on Robotics and Automation 1998/01/01

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    This paper describes the relationship between the control performance and the number/configuration of the image features in feature-based visual servoing. The performance is evaluated by two ways: accuracy and speed. A quantitative definition of the sensitivity is given and the relationship among the sensitivity, the speed of convergence and the accuracy are discussed by using image Jacobian. It is proved that these performance indices are increased effectively by using a point with different height. Experiments on Puma 560 are given to show the validity of these performance measures.

  218. Visual tracking of redundant features

    Koichi Hashimoto, Atsuhito Aoki, Toshiro Noritsugu

    IEEE/ASME International Conference on Advanced Intelligent Mechatronics, AIM 1997/12/01

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    This paper presents how the control performance of the feature-based visual servo system is improved by utilizing redundant features. Effectiveness of the redundant features is evaluated by the smallest singular value of the image Jacobian which is closely related to the accuracy in the world coordinate system. An LQ control scheme is used to resolve the controllability problem. Usefulness of the redundant features is verified by the real time experiments on a PUMA 560 manipulator. 1. Mathematical Formulation: A mathematical description of visual servo system is given and a sufficient condition for image Jacobian to be full rank is presented. With the necessary condition given in [2], this completes a necessary and sufficient condition. 2. Sensitivity: This section gives a definition of sensitivity and a theorem that claims `Closed-loop sensitivity is reduced by increasing the non-degenerated number of feature points.' This theorem shows another criterion of feature point selection. 3. Controller: A linear LQ controller that resolves a difficulty of redundancy of features is briefly reviewed. 4. Experiments: Experimental results on a PUMA 560 with three, four and five feature points are presented. They show effectiveness of utilizing redundant features.

  219. Power Assist System Using Rubber Artificial Muscle Manipulator.

    大皿敏之, 則次俊郎, 橋本浩一, 高岩昌弘

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 1997/06

  220. Improvement of Characteristics of Electric Power Steering System.

    森本量, 則次俊郎, 橋本浩一, 高岩昌弘, 竹原伸

    日本機械学会中国四国支部総会・講演会講演論文集 1997/02

  221. Realization of the environment recognition based on the action. Observer for the motion estimation. ( Ministry of Education S ).

    橋本浩一, 木村英紀

    感覚と行動の統合による機械知能の発現機構の研究 平成8年度 1997

  222. Visual Servoing of Nonholonomic Cart.

    橋本浩一, 則次俊郎

    システム制御情報学会研究発表講演会講演論文集 1997/01/01

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    This paper presents a visual feedback control scheme for a nonholonomic cart without capabilities for dead reckoning. A camera is mounted on the cart and it observes cues attached on the environment. The dynamics of the cart are transformed into a coordinate system in the image plane. An image-based controller which linearizes the dynamics is proposed. Since the positions of the cues in the image plane are controlled directly, possibility of missing cues is reduced considerably. Simulations are carried out to evaluate the validity of the proposed scheme. Experiments on a radio controlled car with a CCD camera are also given.

  223. Visual servoing with hand-eye manipulator - Optimal control approach

    Koichi Hashimoto, Takumi Ebine, Hidenori Kimura

    IEEE Transactions on Robotics and Automation 1996/12/01

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    This paper proposes a control theoretic formulation and a controller design method for the feature-based visual servoing with redundant features. The linear time-invariant (LTI) formulation copes with the redundant features and provides a simple framework for controller design. The proposed linear quadratic (LQ) method can deal with the redundant features, which is important because the previous LQ methods are not applicable to redundant systems. Moreover, this LQ method gives flexibility for performance improvement instead of the very limited design parameters provided by the generalized inverse and task function controllers. Validity of the LTI model and effectiveness and flexibility of the LQ optimal controller are evaluated by real-time experiments on a PUMA 560 manipulator. ? 1996 IEEE.

  224. Rehabilitation robot using rubber artificial muscle. Identification of human arm's mechanical impedance.

    田中稔弘, 則次俊郎, 橋本浩一, 高岩昌弘

    日本ロボット学会学術講演会予稿集 1996/11

  225. Identification of human arm's mechanical impedance using a rubber artificial muscle manipulator.

    田中稔弘, 則次俊郎, 橋本浩一, 高岩昌弘

    流体制御シンポジウム講演論文集 1996/11

  226. Energy Regenerating Control of Active Suspension Using Pneumatic Cylinder.

    高取弘之, 則次俊郎, 橋本浩一, 高岩昌弘

    流体制御シンポジウム講演論文集 1996/11

  227. Cart Position Control with Visual Servo.

    橋本浩一, 則次俊郎

    日本ロボット学会学術講演会予稿集 1996/11

  228. Control of Active Supension with Energy Regenerating.

    藤田統, 則次俊郎, 橋本浩一, 高岩昌弘, 竹原伸

    日本機械学会中国四国支部総会・講演会講演論文集 1996/02

  229. Improvement of the Control Performance of Robot Manipulator Using Rubber Artificial Muscle with ER Damper.

    辻善夫, 則次俊郎, 橋本浩一, 高岩昌弘, 伊藤一寿

    日本機械学会中国四国支部総会・講演会講演論文集 1996/02

  230. Visual Servo based on Observer with Redundant Features.

    青木篤人, 橋本浩一, 則次俊郎

    自動制御連合講演会前刷 1996

  231. Research on visual sense servo system dynamically combining environment recognition with kinetic control. Visual servo using observer. ( Ministry of Education S )

    橋本浩一, 木村英紀

    第1回重点領域研究「知能ロボット」シンポジウム予稿集 平成7年度 感覚と行動の統合による機械知能の発現機構の研究 1996

  232. Visual Feedback Control.

    橋本浩一

    システム制御情報学会研究発表講演会講演論文集 1996

  233. Modeling and control of robotic yoyo with visual feedback

    Koichi Hashimoto, Toshiro Noritsugu

    Proceedings - IEEE International Conference on Robotics and Automation 1996/01/01

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    Yoyo is a toy made of two thick circular pieces of wood, plastic, etc., connected with a short axle that can be made to run up and down by moving a string tied to it. Humans can play with a yoyo without difficulty. However, developing a robot system that can play with a yoyo presents a significant challenge to controller design, because the dynamics of the yoyo are difficult to model precisely. Moreover, since the dynamics are not continuous and there are integral-type constraints on the hand trajectory, conventional continuous time feedback control theory does not work well. This paper presents a model and a control scheme for robotic yoyo with visual feedback. Experiments on a PUMA 560 are carried out to evaluate the validity of the discrete time formulation and the controller design.

  234. Active Control of Automobile Power Steering System.

    森本量, 則次俊郎, 橋本浩一, 高岩昌弘, 竹原伸

    計測自動制御学会中国支部学術講演会論文集 1995/12

  235. Estimation of human arm's mechanical impedance using an adaptive identification method.

    田中稔弘, 則次俊郎, 橋本浩一, 高岩昌弘

    計測自動制御学会中国支部学術講演会論文集 1995/12

  236. Visual Servo based on Observer.

    青木篤人, 橋本浩一, 則次俊郎

    計測自動制御学会中国支部学術講演会論文集 1995/12

  237. Neural Network Control of Pneumatic Servo System Considering Energy Consumption.

    岡本元彦, 則次俊郎, 橋本浩一, 高岩昌弘

    日本ロボット学会学術講演会予稿集 1995/11

  238. Visual Servo based on Observer.

    橋本浩一, 木村英紀, 則次俊郎

    日本ロボット学会学術講演会予稿集 1995/11

  239. Visual Servoing. Nonlinear Observer Approach.

    橋本浩一, 木村英紀

    日本ロボット学会誌 1995/10

  240. Mechanism and Control of Flexible Actuator with 3 D.O.F.

    村尾二郎, 則次俊郎, 橋本浩一, 高岩昌弘

    日本機械学会全国大会講演論文集 1995/08

  241. Visual Servoing-Nonlinear Control Approach.

    橋本浩一, 井上貴博, 木村英紀

    日本ロボット学会誌 1995/03

  242. Visual Servoing based on Redundant Features.

    橋本浩一, 青木篤人, 則次俊郎

    計測自動制御学会学術講演会予稿集 1995

  243. Visual Servoing based on Nonlinear Observer.

    橋本浩一, 則次俊郎

    計測自動制御学会学術講演会予稿集 1995

  244. Visual servoing with nonlinear observer

    Koichi Hashimoto, Hidenori Kimura

    Proceedings - IEEE International Conference on Robotics and Automation 1995/01/01

    More details Close

    Visual servo system is a robot control system which incorporates the vision sensor in the feedback loop. Since the robot controller is also in the visual servo loop, compensation of the robot dynamics is important for high speed tasks. Moreover estimation of the object motion is necessary for real time tracking because the visual information includes considerable delay. This paper proposes a nonlinear model-based controller and a nonlinear observer for visual servoing. The observer estimates the object motion and the nonlinear controller makes the closed loop system asymptotically stable. based on the estimated object motion. The effectiveness of the observer-based controller is verified by simulations and experiments on a two link planar direct drive robot.

  245. Visual Feedback Control Based on H^∞ Control Theory

    OGURA Saori, EBINE Takumi, HASHIMOTO Koichi, KIMURA Hidenori

    計測自動制御学会論文集 1994/12/31

  246. Visual Feedback Control Based on H.INF. Control Theory.

    小倉佐織, 海老根巧, 橋本浩一, 木村英紀

    計測自動制御学会論文集 1994/12

  247. Visual Feedback Control-From Static to Dynamic.

    橋本浩一

    システム/制御/情報 1994/12

  248. High Efficient Vibration Control with Hybrid Type Active Suspension.

    真田悟史, 則次俊郎, 橋本浩一, 高岩昌弘, 竹原伸

    流体制御シンポジウム講演論文集 1994/11

  249. Visual Servoing-Optimal Control Approach.

    橋本浩一, 海老根巧, 木村英紀

    日本ロボット学会誌 1994/07

  250. Yoyo control by visual feedback.

    小倉佐織, 橋本浩一, 木村英紀

    制御理論シンポジウム資料 1994

  251. 第12回 IFAC 国際会議に出席して

    橋本 浩一

    システム/制御/情報 : システム制御情報学会誌 = Systems, control and information 1993/12/15

  252. H.INF. Control of Robot with Linearized Model.

    川端将司, 橋本浩一, 木村英紀

    日本機械学会論文集 C編 1993/10

  253. Dynamic Control of Visual Feedback System.

    橋本浩一, 井上貴博, 木村英紀

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 1993/07

  254. Visual Servoing-Optimal Control Approach.

    橋本浩一, 海老根巧, 木村英紀

    日本ロボット学会ロボットシンポジウム予稿集 1993/05

  255. Visual feedback control based on H.INF. control theory.

    小倉佐織, 海老根巧, 橋本浩一, 木村英紀

    自動制御連合講演会前刷 1993

  256. Nonlinear Feedback Control of a Robot with a Visual Sensor.

    橋本浩一, 小谷崇二, 木村英紀

    計測自動制御学会学術講演会予稿集 1993

  257. Full 3D visual tracking with nonlinear model-based control

    Koichi Hashimoto, Takumi Ebine, Kenji Sakamoto, Hidenori Kimura

    American Control Conference 1993/01/01

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    The visual tracking system is composed of an object moving around the work space and a robot tracking the object based on the visual sensory feedback. This paper proposes a control theoretic formulation for 3D feature-based visual tracking system. The system is modeled by a nonlinear differential equation that incorporates the dynamics of the robot as well as the characteristics of the camera. A nonlinear control scheme which strictly linearizes the system is proposed. Simulations of 6 degrees of freedom control with PUMA 560 manipulator are carried out to evaluate the effectiveness of the proposed nonlinear approach.

  258. H∞ controller design for robust manipulator control

    Koichi Hashimoto, Masashi Kawabata, Hidenori Kimura

    1992/12/01

    More details Close

    Mechanical manipulators are modeled by a set of coupled nonlinear second order differential equations. If a complete model is available, model-based controllers can decouple and linearize the manipulator dynamics. However, since there is a degree of uncertainty in the manipulator model, a model-based control scheme which is robust against modeling error and disturbance is required. This paper proposes a robust control scheme based on H ∞ control theory. The controller consists of a model-based controller followed by a H ∞ controller. Given a nominal model of the manipulator dynamics, the model-based controller approximately linearizes the manipulator dynamics. The H ∞ controller compensates for disturbances and unmodeled dynamics. Experiments on two link direct drive manipulator exhibit the effectiveness of the proposed H ∞ model-based robust control scheme.

  259. 1992 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS'92) に出席して

    橋本 浩一

    システム/制御/情報 : システム制御情報学会誌 = Systems, control and information 1992/11/15

  260. Cartesian-Space Model-Based Force Control of a Manipulator. Control of Position and Impact Force with H .INF. Controller.

    木元努, 橋本浩一, 川端将司, 塚本純, 木村英紀

    計測自動制御学会学術講演会予稿集 1991

  261. Model-Based Robust Control of a Manipulator Based on the H .INF. Control Theory.

    木元努, 橋本浩一, 川端将司, 塚本純, 木村英紀

    計測自動制御学会学術講演会予稿集 1991

  262. Dynamic Control of Manipulators with Compliance to Enviroments.

    今井孝, 橋本浩一, 木村英紀

    計測自動制御学会学術講演会予稿集 1991

  263. Manipulator control with image-based visual servo

    Koichi Hashimoto, Tsutomu Kimoto, Takumi Ebine, Hidenori Kimura

    Proceedings - IEEE International Conference on Robotics and Automation 1991/01/01

    More details Close

    A visual feedback control scheme, called image-based visual servo, is proposed for manipulators with cameras on their hands. To accomplish specific tasks in unstructured environments, it is essential to have capabilities of recognizing the object position with respect to the manipulator hand. Using the Jacobian matrix relating the camera motion to the object position change in the acquired image, a state space formulation of a visual feedback system is established. On the basis of the task defined in the image plane, the desired motion of the hand is achieved by time-variant state feedback. The image-based scheme is applied to a task of tracking a moving object by the camera (and the hand). Simulations show that the control scheme is stable even under noisy conditions, while the conventional position-based servo tends to be unstable. Experiments on a PUMA 560 show the validity and the effectiveness of the image-based visual servo.

  264. The model-based control for a 6DOF manipulator.

    木元努, 橋本浩一, 中村吉伸, 木村英紀

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 1990/06

  265. Manipulator control based on dynamic visual servo.

    橋本浩一, 大橋謙次, 海老根巧, 中村吉伸, 木村英紀

    日本機械学会ロボティクス・メカトロニクス講演会講演論文集 1990/06

  266. Cartesian-space nonlinear feedback control with a parallel processing system.

    橋本浩一, 木元努, 大橋謙次, 赤井健二, 鹿児島昌之, 木村英紀

    日本ロボット学会誌 1990/02

  267. Manipulator control based on dynamic visual servo.

    橋本浩一, 海老根巧, 木元功, 木村英紀

    自動制御連合講演会前刷 1990

  268. An Implementation of a Parallel Algorithm for Real-Time Model- Based Control on a Network of Microprocessors

    Koichi Hashimoto, Kenjo Ohashi, Hidenori Kimura

    The International Journal of Robotics Research 1990/01/01

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    Model-based trajectory control is a class of advanced manip ulator control strategies that are based on the kinematic and dynamic models of manipulators. Many schemes of model- based control have been proposed; however, most of them are limited within the stage of simulation study and very few have been installed on actual manipulators. The main reason is that the computations required for inverse dynamics are far beyond the ability of the present commercially available microprocessors. In order to achieve real-time high sample- rate control, we have proposed a parallel processing scheme for inverse dynamic computations that is called the resolved Newton-Euler algorithm. It resolves the process for computing the desired torques into subprocesses that have almost com plete concurrency. Because these subprocesses communicate with each other in a regular and local way, they can be di rectly mapped on a distributed processing network system. In this paper, we present a real-time parallel computation architecture for implementing the resolved Newton-Euler algorithm composed of a host personal computer and a net work of microprocessors and transputers. All programs are written in a high-level language, occam. This computation scheme is applied to the trajectory control of the PUMA 560 manipulator. Our controller achieves the sampling period of 0.66 ms. ? 1990, Sage Publications. All rights reserved.

  269. New parallel algorithm for inverse dynamics

    Koichi Hashimoto, Hidenori Kimura

    International Journal of Robotics Research 1989/02/01

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    This paper proposes a new parallel computational scheme for inverse dynamics based on a new description of the Newton-Euler formulation. This description, which is essentially identical to Kane's formulation for manipulator dynamics, resolves the task of kinematic and dynamic computations into a set of subtasks. The potential parallelism of the serially connected rigid body dynamics is exploited in these subtasks. The parallel scheme, called the resolved Newton-Euler algorithm is mapped onto a model of computation without any complex task scheduling. This model is composed of processing elements with regular and local connections, which is suitable for very large scale intergration (VLSI) implementation. This model allows computation of the resolved Newton-Euler algorithm with an interation interval of 60 floating-point operations and a response time of 60n + 193 floating-point operations for a manipulator with n joints. This efficiency seems to be sufficient for real-time control.

  270. Cartesian-space model-based control of a manipulator with a parallel processing system.

    橋本浩一, 木元努, 木村英紀

    制御理論シンポジウム資料 1989

  271. An adaptive equalizer based on parallel computation scheme

    Koichi Hashimoto, Hidenori Kimura

    Electronics and Communications in Japan (Part I: Communications) 1987/01/01

    More details Close

    Equalizers which compensate the transmission characteristics of the transmission channels are important for ensuring the quality of data transmission and are inevitable especially in the data transmission using telephone networks. This paper describes a method of applying the parallel architecture (PA) which we have already proposed to an adaptive equalizer which utilizes the recursvie least square (RLS) method. The RLS method which is used to estimate and update the parameters of equalizers, is attractive as an effective algorithm because of its fast conversion. However, the complexity of its computation makes this method less popular than the least mean square (LMS) method, especially for adaptive equalizers which require the fast update of the parameters. Utilizing the parallel architecture with the method described herein it is able to execute the RLS method with the same amount of calculation time as that of the LMS method. The parallel architecture is expected to be applicable in practice because it has an architecture of regular structures and localized interconnections which are suitable for implementation in VLSIs. Copyright ? 1987 Wiley Periodicals, Inc., A Wiley Company

  272. A parallel architecture for recursive least square method

    Koichi Hashimoto, Hidenori Kimura

    Electronics and Communications in Japan (Part I: Communications) 1987/01/01

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    Recent developments in computer technology have enabled the real‐time treatment of signal processing with a large amount of computation which had been considered to be impossible. Moreover, with the development of LSI technology, it has become possible to speed up the execution of the algorithms by parallel computing hardware. This paper discusses a parallel architecture for the recursive least square method of system identification fitted for VLSI. If n is the order of system to be identified, the complexity T(n) required for updating the estimate at each measurement is T s (n) = o(n 2 ), using a single serial processor. However, it can be reduced to T p (n) = o(n) by using the architecture consisting of (2n + 6) elementary processors and a set of delay units. Moreover, we discuss a method to speed up p‐time updates from T s (n, p) = o(n 2 p) to T M (n, p) = o(n + p) using o(np) elementary processors by vectorizing the measurements. Copyright ? 1987 Wiley Periodicals, Inc., A Wiley Company

  273. An adaptive equalizer based on parallel computation scheme.

    橋本浩一, 木村英紀

    電子通信学会論文誌 A 1986/03

  274. A parallel architecture for recuresive least square method.

    橋本浩一, 木村英紀

    電子通信学会論文誌 A 1985/11

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Industrial Property Rights 50

  1. 三次元計測装置、ロボット、ロボット制御装置、及びロボットシステム

    原田 智紀, 橋本 浩一, 荒井 翔悟, 房州 俊樹

    Property Type: Patent

  2. 検出装置、ロボットおよびロボット制御装置

    南本 高志, 橋本 浩一, 荒井 翔悟, 伊藤 翔吾, キンカン チュアサク

    Property Type: Patent

  3. 三次元計測装置、ロボット、ロボット制御装置、及びロボットシステム

    原田 智紀, 橋本 浩一, 荒井 翔悟, 房州 俊樹

    Property Type: Patent

  4. ロボットシステム、ロボットシステムの制御方法、プログラム

    橋本 浩一, 荒井 翔悟, アンドレアス, レンナット, ペテルソン, 石田 怜, 吉田 收志

    Property Type: Patent

  5. 位置姿勢算出装置、ロボット制御装置、及びロボット

    原田 智紀, 橋本 浩一, 荒井 翔悟, 千葉 直也

    Property Type: Patent

  6. 形状測定装置、ロボット制御装置、及びロボット

    原田 智紀, 橋本 浩一, 荒井 翔悟, 寺島 由杜

    Property Type: Patent

  7. ロボット制御装置、ロボット、及びロボットシステム

    原田 智紀, 橋本 浩一, 荒井 翔悟, 福地 伸晃

    Property Type: Patent

  8. ロボットシステム、ロボット、及びロボット制御装置

    原田 智紀, 荒井 翔悟, 橋本 浩一, 福地 伸晃

    Property Type: Patent

  9. ロボット、制御装置、及び制御方法

    原田 智紀, 橋本 浩一, 荒井 翔悟

    Property Type: Patent

  10. 制御システム、ロボットシステム、及び制御方法

    原田 智紀, 橋本 浩一, 荒井 翔悟, 房州 俊樹

    Property Type: Patent

  11. ロボット、制御装置、及び制御方法

    原田 智紀, 小菅 一弘, 橋本 浩一, 山口 賢悟

    Property Type: Patent

  12. 制御システム、ロボットシステム、及び制御方法

    原田 智紀, 橋本 浩一, 荒井 翔悟

    Property Type: Patent

  13. 制御装置、ロボット、及び制御方法

    原田 智紀, 橋本 浩一, 荒井 翔悟, 房州 俊樹

    Property Type: Patent

  14. ロボット、ロボットシステム、制御装置、及び制御方法

    南本 高志, 小菅 一弘, 橋本 浩一

    Property Type: Patent

  15. ロボット

    山口 如洋, 南本 高志, 橋本 浩一, 鏡 慎吾

    Property Type: Patent

  16. ロボット

    原田 智紀, 橋本 浩一, 荒井 翔悟, 山口 賢悟

    Property Type: Patent

  17. ロボット、ロボットシステム、制御装置、及び制御方法

    南本 高志, 小菅 一弘, 橋本 浩一

    Property Type: Patent

  18. ロボット、ロボットシステム、制御装置、及び制御方法

    原田 智紀, 橋本 浩一, 荒井 翔悟

    Property Type: Patent

  19. ロボット、ロボットシステム、制御装置および制御方法

    原田 智紀, 相磯 政司, 橋本 浩一, 荒井 翔悟

    Property Type: Patent

  20. ロボットシステム

    原田 智紀, 橋本 浩一, 鏡 慎吾, 安達 祐仁

    Property Type: Patent

  21. 制御装置、ロボット、制御システム、制御方法、及び制御プログラム

    原田 智紀, 南本 高志, 橋本 浩一, 荒井 翔悟, 藤平 敦

    Property Type: Patent

  22. 制御装置、ロボット、制御システム、制御方法、及び制御プログラム

    原田 智紀, 橋本 浩一

    Property Type: Patent

  23. ロボット、画像処理方法及びロボットシステム

    原田 智紀, 橋本 浩一, 荒井 翔悟, 藤平 敦

    特許第6237122号

    Property Type: Patent

  24. 画像処理装置、ロボットシステム、画像処理方法、および画像処理プログラム

    原田 智紀, 橋本 浩一, 今井 航

    特許第6237117号

    Property Type: Patent

  25. 物体認識装置、物体認識方法、物体認識プログラム、ロボットシステム及びロボット

    原田 智紀, 橋本 浩一, 荒井 翔悟, 藤平 敦

    Property Type: Patent

  26. 姿勢検出装置、位置検出装置、ロボット、ロボットシステム、姿勢検出方法及びプログラム

    南本 高志, 橋本 浩一, 鏡 慎吾, 小菅 一弘

    Property Type: Patent

  27. 制御装置、制御方法及びロボット装置

    南本 高志, 小菅 一弘, 橋本 浩一

    特許第5904635号

    Property Type: Patent

  28. ロボット装置、ロボット制御装置、ロボット制御方法及びロボット制御プログラム

    山口 如洋, 鏡 慎吾, 橋本 浩一

    Property Type: Patent

  29. ヤコビ行列情報生成装置、ヤコビ行列情報生成方法、ヤコビ行列情報生成プログラム、ロボット制御装置、ロボット制御方法、ロボット制御プログラムおよびロボットシステム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一

    Property Type: Patent

  30. ロボット制御装置、ロボット制御方法、ロボット制御プログラムおよびロボットシステム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一, 小菅 一弘

    Property Type: Patent

  31. 検査装置、ロボット装置、検査方法及び検査プログラム

    南本 高志, 橋本 浩一, 井上 智博

    Property Type: Patent

  32. ロボット装置、画像生成装置、画像生成方法、および画像生成プログラム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一

    Property Type: Patent

  33. ロボット装置、画像生成装置、画像生成方法、および画像生成プログラム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一, 小菅 一弘

    Property Type: Patent

  34. 検査装置、ロボット装置、検査方法及び検査プログラム

    南本 高志, 橋本 浩一, 井上 智博

    Property Type: Patent

  35. ロボット制御装置、ロボット制御方法、ロボット制御プログラムおよびロボットシステム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一, 小菅 一弘

    特許第5948914号

    Property Type: Patent

  36. ロボット装置、画像生成装置、画像生成方法、および画像生成プログラム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一

    特許第5948913号

    Property Type: Patent

  37. ロボット装置および位置姿勢検出方法

    南本 高志, 橋本 浩一, ザン チャンタオ

    特許第5899951号

    Property Type: Patent

  38. ロボット、ロボット制御装置、ロボット制御方法、およびロボット制御プログラム

    山口 如洋, 鏡 慎吾, 森田 賢, 橋本 浩一

    特許第5834545号

    Property Type: Patent

  39. ロボット装置、位置姿勢検出装置、位置姿勢検出プログラム、および位置姿勢検出方法

    南本 高志, 橋本 浩一, ザン チャンタオ

    Property Type: Patent

  40. ロボット装置、位置姿勢検出装置、位置姿勢検出プログラム、および位置姿勢検出方法

    南本 高志, 橋本 浩一, ザン チャンタオ

    特許第5699697号

    Property Type: Patent

  41. ロボット、位置検出装置、位置検出プログラム、および位置検出方法

    山口 如洋, 鏡 慎吾, 松永 健嗣, 橋本 浩一

    特許第5803124号

    Property Type: Patent

  42. ロボット装置、位置検出装置、位置検出プログラム、および位置検出方法

    山口 如洋, 南本 高志, 橋本 浩一, 鏡 慎吾

    Property Type: Patent

  43. ロボット装置、位置検出装置、位置検出プログラム、および位置検出方法

    山口 如洋, 南本 高志, 橋本 浩一, 鏡 慎吾

    特許第5803119号

    Property Type: Patent

  44. ロボット装置、検査装置、検査プログラム、および検査方法

    南本 高志, 橋本 浩一, 井上 智博

    特許第5799516号

    Property Type: Patent

  45. 追跡ロボット装置、追跡ロボット制御方法、追跡ロボット制御プログラム、ホモグラフィー行列取得装置、ホモグラフィー行列取得方法、およびホモグラフィー行列取得プログラム

    南本 高志, 橋本 浩一, ザン チャンタオ

    Property Type: Patent

  46. 使用者の身体状態に従って移動する画面を表示する装置及びその作動方法

    林其禹, 橋本 浩一

    特許第5350419号

    Property Type: Patent

  47. 検査システム、その方法及びプログラム

    山口 如洋, 橋本 浩一

    特許第5600954号

    Property Type: Patent

  48. 顕微鏡装置及び輪郭識別プログラム

    費 仙鳳, 五十嵐 康伸, 橋本 浩一

    特許第4614149号

    Property Type: Patent

  49. 顕微鏡装置

    小原 健, 五十嵐 康伸, 橋本 浩一

    特許第4474655号

    Property Type: Patent

  50. 顕微鏡装置及びそれを用いた蛍光観察方法

    五十嵐 康伸, 小原 健, 出口 雄規, 鈴木 健史, 橋本 浩一

    特許第4288323号

    Property Type: Patent

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Research Projects 35

  1. Hierarchical Bio-Navigation Integrating Cyber-Physical Space

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)

    Category: Grant-in-Aid for Transformative Research Areas (A)

    Institution: Tohoku University

    2021/09/10 - 2026/03/31

  2. Development of X-logbot and Elucidation of Behavior Diagram using Sparse Modeling

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)

    Category: Grant-in-Aid for Transformative Research Areas (A)

    Institution: Tohoku University

    2021/09/10 - 2026/03/31

  3. 半透明/金属光沢物体のハンドリングと全品検査のための3.5D計測点群処理

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(A)

    Category: 基盤研究(A)

    Institution: 東北大学

    2019/04/01 - 2024/03/31

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    本研究では、食品、薬品、化粧品などの半透明または金属光沢を有する物体を対象とした、「3D形状プラスアルファ」の計測と点群処理を開発する。本研究ではこれを「3.5D計測点群処理」とよぶ。Light Transport Matrix(LT行列)のスパースセンシングを基盤技術とする。LT行列の要素数はプロジェクタのピクセル数とカメラのピクセル数の積である。LT行列のひとつの列は、プロジェクタのひとつのピクセルのみを光らせたときにカメラの各ピクセルが観測する輝度を表す。つや消しがなされた物体に光をあてると、部分的に明るくなる。つまり輝度はローカルに高くなる。一方で、半透明または金属光沢を有する物体に光をあてると、いくつかの反射や透過を繰り返し、物体表面だけではなく別な場所も輝度が高くなる。 このような対象は複雑な反射特性を持つため、表面形状を計測するためには高度な処理が必要となる。また、一点照射ではプロジェクタピクセル数の照射回数を繰り返さなければならないため、計測に時間を要する。したがって、照射パターンを効率的に制御する必要がある。 本研究では、このような物体のハンドリングと全品検査を同時に実用的な時間で実行するロボットシステムを実現する。 2019年度の実績は、半透明物体や金属光沢物体の表面形状計測である。LTM行列とエピポーラ線の関係から、直接反射光ではない成分を除去することにより、良好な表面形状の取得が可能であることを示した。

  4. 生物ナビゲーションのシステム科学

    橋本 浩一, 木村 幸太郎, 前川 卓也, 小川 宏人

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 新学術領域研究(研究領域提案型)

    Category: 新学術領域研究(研究領域提案型)

    Institution: 東北大学

    2021/04/01 - 2022/03/31

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    本領域では「ヒトや動物の移動行動を計測し、分析し、モデルとして理解し、検証する」という新たな学問分野を創設することを目指した。積極的な異分野融合研究の成果として、最先端の小型多次元センサデバイスであるログボット(ロギングロボット)のハードウェア開発、および計測された多次元移動情報からのデータ駆動型分析プラットフォーム群を開発した。さらに本領域で得られた様々な動物種のデータに適用することによる、動物のこれまでに知られていなかった生態の解明や、生物ナビゲーションの数理モデル化などに成功した。 成果取りまとめの2021年度に19報の論文が採択された。主な論文は以下に紹介する。(1) ドメイン敵対的学習を用いて異種横断行動解析を行う手法を提案した。(2) 視覚/聴覚VRシステムを用いた音源定位行動における視覚入力の影響を調査した。(3) 逃避行動をモデルとした移動運動の方向制御について,その刺激依存性と下行性神経制御機構に関する研究を行った。(4) 動運動の方向制御に対する触角機械感覚入力の影響に関する研究を行った。(5) 公募研究の岩谷班が開発した無限遠平面装置を用いて,運動状態依存的な気流逃避行動の変化を解析した。 また主なアウトリーチ活動として、以下の項目を実施した。(1) Nature Indexにて木村Gと前川Gを中心とする7つの計画班・公募班の共同研究)に関する取材記事 "The challenge of leading interdisciplinary research projects"が紹介。(2) NHK-BS ヒューマニエンスにて木村Gと橋本Gの共同研究が紹介。(3) 公益財団法人テルモ生命科学振興財団 生命科学DOKIDOKI研究室での木村Gの紹介。

  5. Systems Science of Bio-Navigation

    Hashimoto Koichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tohoku University

    2016/06/30 - 2022/03/31

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    The Systems Science of Biological Navigation (International Activity Support Group) promoted international research activities by holding international competitions on navigation analysis methods, inviting young researchers to travel abroad, and inviting distinguished researchers to Japan. Specifically, with animal and human trajectory datasets made public, we held competitions on algorithms to understand behaviors from the trajectories. The winners of these competitions were invited to international symposiums and conferences hosted by this project, providing opportunities for young researchers and students to interact with each other. This exchange led to the establishment of a new international collaborative research network. In addition, tutorials and workshops were held at several international conferences to discuss the research of this group with overseas researchers.

  6. System Identification of Bio-Navigation and Development of Innovative Logging Device

    Hashimoto Koichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tohoku University

    2016/06/30 - 2021/03/31

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    Research was conducted to develop advanced small multidimensional data loggers to measure animal behavior and to analyze and understand the navigation data collected from the loggers. By developing Logbot (an AI logger equipped with GPS, camera, accelerometer, etc.), previously unknown behaviors were recorded, making it effective for behavior analysis. In addition, microphone-equipped, camera-integrated, camera-separated, and intervention stimulators were realized. Data acquisition continues with new animal species such as bears, dogs, and bats. Furthermore, predictive and analytical models of animal and human behavior have been developed, and results such as hierarchy and clustering of migratory behavior have been achieved.

  7. Systems Science of Bio-Navigation

    Hashimoto Koichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Institution: Tohoku University

    2016/06/30 - 2021/03/31

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    In the "Systems Science of Bio-navigation", we aimed to establish a new academic field to measure, analyze, model and verify human and animal movement behavior. As a result of active interdisciplinary research, we have developed a series of state-of-the-art small multidimensional sensor devices called "Logbot" (logging robot). We have also developed a set of softwares for data-driven analysis of the measured multidimensional movement data. By using these methods, we have succeeded in elucidating novel behavior of wild animals and in mathematical modeling of navigation of various animal species.

  8. Systems Science of Bio-navigation

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

    2016/06/30 - 2021/03/31

  9. monitoring activity of neuronal micro domain using high speed tracking system

    Tsukada Yuki, MORI Ikue, NAKANO Shunji, HASHIMOTO Koichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Nagoya University

    2014/04/01 - 2017/03/31

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    We have developed a tracking system that automatically tracks microorganisms navigating freely on a small dish. The system succeeded in tracking nematodes acting freely on the temperature gradient under a high magnification objective lens. Fluorescence calcium probes were expressed in specific neurons and neural activity was measured with this system in noninvasive manner under a freely behaving condition. To analyze the time-lapse imaging data obtained from this tracking system, an image analysis program was developed. Using these tools, we analyzed behavioral factors and neural activities related to thermotaxis behavior. Our research helps to understand how activity of interneurons contributes to regulate behavior during exploratory navigation.

  10. Development of optogenetics visual servo microscope

    Hashimoto Koichi, HIGASHITANI ATSUSHI, KAGAMI SHINGO, ARAI SHOGO

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2013/05/31 - 2017/03/31

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    In this study, in order to analyze the brain function mainly by the sensory response behavior system, we simultaneously stimulated neuronal activities, developed an external stimulus according to the state, and developed a system to measure behavior. In particular, as the integration platform, we developed the world's first robot microscope "OSACaBeN" that automatically tracks moving observation objects at high speed to stimulate specific nerve cells by projection mapping, and the properties of multiple dopamine cells in nematodes during action are different from each other. Furthermore, regarding the smell response behavior of nematodes, we clarified the possibility of possessing brain functions common to humans and others, performing time-integrated information "decision making".

  11. 4D Registration of small animals to analyze brain function

    HASHIMOTO Koicihi, TABATA Testuya, HIROI Makoto, FEI Xianfeng, ARAI Shogo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2013/04/01 - 2015/03/31

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    Memory analysis of fruit fly has long history. Recently developments of fluorescent probes have succeeded to analyze the neural circuit with one cell level. This research is to develop a image alignment technology to stack the fluorescent images obtained by two photon microscope. In 2013 FY we have developed an alignment program to precisely match two images. In 2014 FY we have successfully stack many images to make a 3D analysis and presented a paper in a journal.

  12. Imaging analysis of neural circuit involved in voluntary behaviors in C. elegans

    GENGYO-ANDO Keiko, NAKAI Junichi, OHKURA Masamichi, HASHIMOTO Kouichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Saitama University

    2013/04/01 - 2015/03/31

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    Most Animals can initiate and regulate voluntary behaviors in the absence of external stimuli, but the mechanism underlying decision-making is largely unknown. To elucidate the molecular and neural mechanism of these behaviors, we focused on C. elegans, which have a simple brain consisting of only 302 neurons and transparent body. Using our recently developed G-CaMP6-8, green genetically encoded calcium indicators (GECIs), we developed a system that allowed systematic imaging and analysis of the neural activity during spontaneous locomotion. We further designed R-CaMP2, a high-affinity, fast, red GECI, and successfully achieved dual-color imaging and optical stimulation in combination with green GECIs and channelrhodopshin 2 in freely moving C. elegans.

  13. Mobile User Interfaces using a High-Speed Projector-Camera System

    KAGAMI Shingo, HASHIMOTO Koichi, ARAI Shogo

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2011/04/01 - 2014/03/31

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    We have developed user interfaces for a mobile device equipped with a video projector. System development for stabilized projection by which the projected contents are fixed on a planar screen without being affected by the motion of the mobile device was carried out and user interfaces utilizing the motion of the mobile device while the projected contents are fixed on the screen. The results include namely a projector firmware to apply arbitrary homography transformations to the projected contents at 1300 frames/s, a pose and position estimation algorithm for a mobile projector-camera system exploiting geometric constraints between the system and the planar screen, and operation interfaces utilizing the pose and dynamic motion of a mobile device.

  14. 神経活動評価のための顕微鏡オートフォーカスと蛍光画像解析

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 新学術領域研究(研究領域提案型)

    Category: 新学術領域研究(研究領域提案型)

    Institution: 東北大学

    2011/04/01 - 2013/03/31

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    本研究の目的は、生物が持つ「神経系の活動状態」とそのアウトプットとしての「行動」を高い時間・空間分解能で計測する装置を開発することである。生物の行動を理解するためには、それを作り出している神経系の複雑な情報処理過程を解明することが必要不可欠である。しかし、近年の行動遺伝学の進展にもかかわらず多段階の情報処理過程はいまだにほとんど明らかにされていない。その最も大きな原因は、観察倍率と視野サイズがトレードオフの関係にあり、運動する生物を高い空間分解能で長時間観察することができないことにある。そこで本研究では、「顕微鏡画像のフィードバックにより顕微鏡ステージを制御して生物の行動を追跡する」という、本質的な解決策により、高い時間分解能を保ったまま神経活動を長時間記録・解析可能なシステムを開発する。 とくに、モデル生物として盛んに研究されている線虫(C. elegans)やゼブラフィッシュ(Danio rerio)の神経部位を明視野像と蛍光像を用いてリアルタイム追跡し、同時に神経細胞の蛍光像を定量計測できる顕微鏡の実現を目指す。 本年度は、線虫の変形やZ軸方向のズレにロバストな画像処理アルゴリズムとその高速化手法の開発、高精度な三次元追跡システムの実現、神経細胞レベルで光刺激可能な光学プロジェクタシステムの実現、1600fps超高速カメラを用いたゼブラフィッシュトラッキングシステムの実現などを実施した。 これらの成果は、埼玉大学中井教授、大阪大学木村准教授、名古屋大学森教授、東京大学飯野教授などの研究室に導入され、今年度はシステムハードウェア・ソフトウェアの改良を行いつつ、いくつかの重要な共同研究成果を発表するに至った。

  15. Automatic ROI Setting for Moving Nerons in Fluorescent Observation

    HASHIMOTO Koichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Tohoku University

    2011 - 2012

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    We have developed a software to track ROI (Region of Interest) in a fluorescent video. The video is taken by a microscope system that tracks a target animal motion by using real-time control of motorized stage. The system can analyze and record the response of the target animal with high time and space resolutions. Especially, we have observed C. elegans in bright field as well as in fluorescence images simultaneously using tracking microscope. Moreover we have evaluated the usefulness of the software by analyzing the C. elegans neural image.

  16. Visual Servo Microscope for Analysis of Animal Behavior

    KOICHI Hashimoto

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: Tohoku University

    2009 - 2012

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    We have developed a microscope system that tracks a target animal motion by using real-time control of motorized stage. The system can analyze and record the response of the target animal with high time and space resolutions. Especially, we have realized a system to observe C. elegans in bright field as well as in fluorescence images simultaneously. C. elegans is widely used for many purpose as a model animal. Thus the system is contributing in many fields including sensor response, neural network analysis, internal neural state analysis, motor control, and also animal behavior.

  17. 運動する生物のロバスト追跡と傾向画像解析

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 新学術領域研究(研究領域提案型)

    Category: 新学術領域研究(研究領域提案型)

    Institution: 東北大学

    2009 - 2010

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    本研究の目的は、生物が持つ「神経系の活動状態」とそのアウトプットとしての「行動」を高い時間・空間分解能で計測する装置を開発することである。 生物の行動を理解するためには、それを作り出している神経系の複雑な情報処理過程を解明することが必要不可欠である。しかし、近年の行動遺伝学の進展にもかかわらず多段階の情報処理過程はいまだにほとんど明らかにされていない。そのもっとも大きな原因は、観察倍率と視野サイズがトレードオフの関係にあり、運動する生物を高い空間分解能で長時間観察することができないことにある。そこで本研究では、顕微鏡画像のフィードバックにより顕微鏡ステージを制御して生物の運動を追跡するという本質的な解決策により、高い空間分解能を保ったまま神経活動を長時間記録・解析可能なシステムを開発する。とくに、モデル生物として盛んに研究されている線虫(C.elegans)やゼブラフィッシュ(Danio rerio)の神経部位を明視野像と蛍光像を用いてリアルタイム追跡し、同時に神経細胞の蛍光像を記録できる顕微鏡の実現を目指す。 本年度は、線虫の変形やZ軸方向のずれにロバストな画像処理アルゴリズムおよびその高速化手法、神経細胞の蛍光像をフィードバックしたオートフォーカス手法、高精度な三次元追跡が可能なビジュアルサーボステージを開発した。実際、埼玉大学中井教授、大阪大学木村准教授、名古屋大学森教授、東京大学飯野教授などの研究室にXYZステージを導入し、フィードバック制御アルゴリズムを提供した。これらの共同研究の成果は学会発表の予定である。

  18. Learning of Dynamics and Cooperative Control of Aerial Vehicles Using a High-Speed Vision System

    HASHIMOTO Koichi, IWATANI Yasushi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Tohoku University

    2006 - 2008

  19. Ultra-High-speed Sensory-Motor System Based on Distributed Network Architecture

    ISHIKAWA Masatoshi, NAMIKI Akio, KOMURO Takashi, OKU Hiromasa

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: The University of Tokyo

    2002 - 2006

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    The purpose of this study is to develop a recognition-behavior integration system which can act in a flexible manner at high-speed in the real environment. Using basic technologies, such as sensory-motor integration based on hierarchical parallel architecture, ultra-high-speed recognition and motion, and distributed network processing architecture, we have developed a high-speed realtime processing system in which a large number of sensors and actuators are connected based on distributed network architecture. 1.A high-speed vision network system with TCP/IP communication function. In order to track many targets which moves at high-speed in a wide area without occlusion, we have developed a distributed cooperative network system with multiple vision systems. 2.A distributed sensor network information processing algorithm. We have proposed a sensor fusion processing method called DTKF (Delay-Tolerant Kalman Filter). DTKF is a method using Kalman Filter, and it has a good scalability against the increase of the number of sensors. The proposed method was verified by a numerical simulation of a target tracking task of high-speed vision sensor. 3.A multi-high-speed visual feedback system. We have developed a multi-high-speed visual feedback system with multiple high-speed visions. By interpolating the lack of information using several vision systems, a 3D tracking of multiple targets which is robust against occlusion is achieved. Also, the improvement of a range of measurement and accuracy, and occlusion avoidance is achieved. 4.Sensory-motor fusion based on hierarchical parallel processing architecture In order to connect a large number of sensor systems and robot systems, we have developed a parallel distributed processing system in which realtime processing systems, robot systems, and sensor systems are integrated. In the system three realtime processing systems made by dSpace Inc, are connected to each other using the CAN bus, and two robot arms, three robot hands, three high-speed vision systems (six camera heads), and other sensors (tactile sensors, force sensors, and so on) are connected with high-speed IO ports.

  20. 微生物を能動的コンテナとするマイクロ配送システム

    橋本 浩一, 森 亮介, 小野 貴彦

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 萌芽研究

    Category: 萌芽研究

    Institution: 東北大学

    2004 - 2005

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    本研究では,微生物群を自立的に運動できるコンテナ群とみなし,その運動を制御することで多種多様な微小対象を効率的に輸送・分配できるマイクロ輸送システムの構築を目標とした.具体的には,電場の方向に沿って運動する性質(走電性)と外部の物質を取り込む性質の両方をもつ微生物を利用し,その運動を電場により制御することを想定した. 本年度は,走電性をもつ微生物の一種であるゾウリムシを対象とし,その運動制御の実現に焦点を絞った.まず,電場により微生物の運動制御をおこなうため,電極を有する実験用流路の設計と製作をおこなった.これまでの研究で使用した流路の場合,電極の配置により生成できる電場の方向に制限があった.この問題を克服するため,複数の電極を容器周辺部に配置した流路を設計し製作した.各電極のへの電圧入力を個別に設定することで,流路内の電場の方向を任意に制御することが可能である.流路内の全領域で同じ方向へ電場を生成することも可能であり,さらに領域ごとに異なる方向へ電場を生成することも可能である. 製作した流路の有効性を検証するため,数倍の大きさの流路を作成し,その中の電位分布を測定することで流路内に任意の方向へ電場を作成できていることを確認した.また,作成した流路を用いて,微生物群を希望の方向へ誘導することにも成功した. 今後の展開としては,能動コンテナとしての利用を想定した運動制御の手法を検討し,制御手法や流路デザインの検討・改良をおこなう予定である.

  21. Modeling and Model Learning in Very High Speed Visual Servo Systems

    HASHIMOTO Koichi, MORI Ryosuke, KOMURO Takashi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    2002 - 2004

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    Conventional manipulators are designed to control the end point position with high accuracy based on the joint angle measurement, and are not designed for high-speed control with vision sensors. Therefore, it is difficult to achieve an intellectual, high-speed task for enabling the performance of high-speed vision. And thus the speed-up of the whole visual feedback system highly depends on the speed-up of the manipulation system. We think that introducing high-speed actuator is not enough and it is important to understand the characteristics of the image processing system and the active vision, the hand system and also the design of the control system. In this sense, to achieve the super-high-speed visual servo system, we have to develop the model that describes the dynamics of all elements composing the system ; and the development of the parameter identification technique ; and the model learning algorithm. The following research are done this year : 1.Visual servo by high-speed hand system : A high-speed multi finger hand system was developed. An algorithm to catch a falling ball and a falling column stably was proposed, and the performance of the super-high-speed visual servo was evaluated by experiments. 2.Microorganism tracking system : A system that can stably observe a swimming paramecium was developed. The position of the pool where a lot of paramecia swim was controlled by a XY stage. 3.Expansion of stability area of visual servo : In this research, the method of expanding the stability area was examined in consideration of the restriction with limited camera view. 4.Composition and robustness in visual servo system : In this research, it was pointed out that the robustness of the system changes greatly by combining different structures and algorithms. 5.Ball capture and lifting task : Ball catching and lifting experiments have been done.

  22. 自由空間光インターコネクションを用いた空並列VLSIフォトニクス

    石川 正俊, 成瀬 誠, 橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 基盤研究(A)

    Category: 基盤研究(A)

    Institution: 東京大学

    2001 - 2003

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    本研究は、大規模集積回路(VLSI)技術と自由空間型光インターコネクション技術を用いて、高度な演算能力と通信能力を併せ持つVLSIフォトニクスシステムを実現することを目的としている。自由空間型の並列光インターコネクションは、光線の高密度な並列性による潜在的な優位性が認められていながらも、実用に資する技術として開花できていない。 その理由として、パッケージング技術をはじめとして、システム化レベルにおける研究が不十分であることが挙げられる。そこで本研究では、まず、現実の計算機システム内でのVLSIチップ間接続に光インターコネクション技術を応用する際の技術課題を、VLSI回路技術、面発光レーザアレイ、微小光学技術等の原理的・技術的限界から検討した。その際、本研究の発端となるVLSIフォトニクスシステムであるOCULAR-IIでの最大の課題として明らかになったアライメントの問題を、実機を用いて詳細に評価し、パッケージング技術への要求には特に注意を要した。また、上記の解析を踏まえた上で、微小な光デバイス間の安定した実装手法に関して、様々なアライメント手法を検討した。自由空間型光インターコネクションに適したアライメント方式のひとつとして、並列性、高密度性、自由空間での接続、環境内に存在する振動等の外乱等の要件を考慮し、デバイスの位置・姿勢を実時間で制御するアクティブアライメント技術を検討し、基礎実験システムを用いた実証に着手した。

  23. High-throughput three-dimensional micro imaging using WDM technolgies

    NARUSE Makoto

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    2001 - 2003

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    This research intends to achieve high-bandwidth three-dimensional micro imaging by fusing the idea of wavelength-domain multiplexing of light-wave and two-dimensional space-domain parallelism. For realize high-throughput systems, we need various new sub-system technologies concerning the essential properties of two-dimensional parallel optical devices, diffractive optical elements, integrated circuits, and so forth. In particular, the parallel structure, which is indispensable to achieve high-throughput, imposes new requirements to optical system designs. For example, in a conventional microscope objective, off-axis beams from a laser cannot be imaged onto a proper imaging position due to severe distortion of the lens system where the off-axis beam probing is not supposed. Clearly, a system-level problem occurs due to the introduction of parallelism into imaging applications. To solve such problems, we developed active alignment for the purpose of parallel system stabilization, optimal lens design for parallel confocal imaging, and data processing by using computational sensor array which is directly adapted to a parallel imaging optics. The active alignment was experimentally demonstrated where 118 Hz environmental disturbance was successfully reduced. Also, by employing H-infinity theory, we also realized to integrate the dynamics of the controller and disturbance for the operation of the active alignment. For the parallel confocal imaging system was developed by reducing distortion and astigmatic aberrations, which supports up to 3,200 parallel channels if we assume 250um pitch for the confocal microscopy.

  24. Bio-System Control Competitive

    System: JST Basic Research Programs (Precursory Research for Embryonic Science and Technology :PRESTO)

    2002/11 -

  25. ビジュアルサーボの大域的安定化と特徴量空間経路計画

    橋本 浩一, 小室 孝, 石川 正俊, 成瀬 誠

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 萌芽研究

    Category: 萌芽研究

    Institution: 東京大学

    2001 - 2002

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    本研究の目的は,ビジュアルサーボを特徴量空間における経路計画の観点から定式化することで,対象物の特徴量の事前知識を持たずに特徴量空間内を大域的に誘導できる軌道計画法を開発することである. 平成13年度までに,ポテンシャルを特徴量誤差の2次形式を用いて適切に設定し,ポテンシャルの最小化問題として特徴ベースビジュアルサーボの定式化を行った.その結果,「軌道計画(目標値生成)とフィードフォワード・フィードバックを一体化したモーションコントロール」としての定式化が可能となった,従来の「特徴量偏差を状態とする状態フィードバック」は,特徴量誤差の二乗ノルムをポテンシャルとする状態空間における最急降下法であり,大域的安定化のためにはポテンシャルの大域的凸性が必要であった.しかし,本研究で定式化された制御問題では,最適化の前に特徴量空間において経路計画を行うため,経路に沿った局所的な凸性が保証されれば大域的安定となる.平成14年度は,前年度の研究を理論的,実験的に進めた.具体的には,以下の手法の研究を行った. 1.運動を利用したカメラの自己校正法と視覚サーボへの応用 カメラが運動する際には,注視対象物上の各特徴点に対して基本方程式と呼ばれる幾何学的な関係式が成り立ち,それを利用することでカメラの自己校正を行う方法を開発した.14年度では,前年度で提案した基本的なアルゴリズムに関して理論的な検証をすすめて,ロバストな推定手法を提案し,ビジュアルサーボ制御へ応用した. 2.Static-eyeとhand-eyeのビジュアルサーボ制御理論に基づく比較検討 ビジュアルサーボの手法として,マニピュレータの手先にビジョンを付けるhand-eye手法と,マニピュレータとは別に視覚装置を設置するstatic-eye手法が存在する.本研究では,これらの手法の制御理論的な解釈を行い,双方の評価を行った.その結果,行うタスクの種類によって,それぞれ利点と欠点が存在することを理論的に導き出し,ビジュアルサーボ制御への応用を行った.

  26. Ultra High-speed Manipulation Using 1ms Vision chip with Massively Parallel Architecture

    ISHIKAWA Masatoshi, HASHIMOTO Koichi, NARUSE Makoto, HARA Tutomu

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)

    Category: Grant-in-Aid for Scientific Research (A)

    Institution: University of Tokyo

    1999 - 2001

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    For past years we had developed several types of a massively parallel vision chip system and the 1ms sensory-motor fusion system. In the project, our main aim is to extend these our results and to systemize an ultra high-speed manipulation technology based on a new principle using high-speed visual feedback control. As a result an integrated LSI active vision system and a high-speed hand-arm system have been developed. The detailed results are written as following. 1.Development of an 1ms active vision system basedn on 1ms vision chip architecture The 2-axis active vision system with high-speed vision chip has been developed. Using the developed system, an active vision control method is proposed, in which 3D shape recognition and target tracking is achieved in parallel. 2.Development of a high-speed hand-arm system with a 1ms vision system In order to control a robot hand-arm and an active vision, a realtime DSP processing system has been developed. In the developed system has several processors, and parallel control processing is executed. As a result many numbers of sensor information can be processed in 1ms. A high-speed hand-arm system is controlled using 1ms vision system based on parallel DSP processing. 3.Development of an image processing using massively parallel architecture and high-speed processing Parallel image processing algorithm is developed in order for high-speed visual servo control. Realtime recognition of a 3D position and a 3D shape using 2-sets of active vision systems is achieved. 4.High-speed visual feedback theory based on analysis of dynamics of an environment A high-speed visual feedback control theory is proposed, in which high-speed manipulation is achieved by observing the dynamics of a target with high-speed vision in realtime. Also a dynamic control theory of a robot using a high-speed vision for a touching task is proposed.

  27. 非ホロメミック視覚サーボ系の幾何学的構造の解析と合理的な制御系設計

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 岡山大学

    1999 - 2000

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    1.非ホロノミック視覚サーボ系の制御理論的定式化…本研究では,非ホロノミック拘束を受けるロボットにカメラを取りつけ,環境を観測してロボットを制御する.したがって,環境の画像を画像特徴量を用いて情報を縮約すると,視覚サーボ系のモデルはロボットの位置・姿勢の変動と特徴量の時系列を関係付ける非線形微分方程式となる.一方,ロボットが非ホロノミックな拘束を受けて運動するとき,その拘束は不可積分であるため状態を低次元化することはできない.したがって,制御対象を非ホロノミック拘束つきの非線形微分方程式で表現した. 2.幾何学的構造の解明…1.で得られた微分方程式の拘束条件の幾何学的構造を解析することを試みた.まず,ロボットの運動に課せられる非ホロノミック拘束を特徴量の動きに変換した.特徴量の動きにかかる拘束の幾何学的意味を解明することはできなかったが,画像平面内でフィードバックループを閉じる制御系,すなわち,ロボットの位置・姿勢を計測せずに完全に画像フィードバックのみで制御するロボット制御系を構成することが可能となった.また,拘束を画像平面内で解析することにより,本制御問題が「画像平面内での経路計画問題」の性質を有することが明らかになった. 3.幾何学的構造に基づく制御系設計…制御対象の幾何学的構造に着目し,幾何学的構造を積極的に利用するフィードバック制御器を設計する計画であったが,幾何学的構造の意味を完全には明確にできなかったため,画像平面内で近似的に線形化する制御則を構成した.この制御則は切り返しを発生するもので,スライディングモードと同様にモデルに対する不確かさや外乱に強いという特徴を持つ.また,ラジコン模型の自動車を用いた実験装置においては,精度のよいモデル化が不可能であるため,この特徴はきわめて有効である.さらに,完全な画像ベースの制御系を構成することができたため,ロボットの機構学的なモデル誤差の影響を受けない制御系が構成できた.これは本研究によって得られた全く新しい知見である.

  28. 非ホロノミック視覚サーボ系の幾何学的構造の解析

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 岡山大学

    1997 - 1998

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    1. 視覚サーボ系の制御理論的定式化・・・作業環境とロボットの位置・姿勢の関数として画像特徴量を記述し,特徴量の時系列として作業を定義した.この定義により,カメラによる観測は「ロボットと環境の相対的位置・姿勢を特徴量に写す非線形写像」と解釈できる.一方,ロボットが非ホロノミックな拘束を受けるとき,その拘束は不可積分であるため状態を低次元化することはできない.したがって,作業のモデルを非ホロノミック拘束つきの非線形微分方程式で表現した. 2. 幾何学的構造の解明・・・1.で得られた微分方程式の拘束条件の幾何学的構造を解析することを試みた.まず,ロボットの運動に課せられる非ホロノミック拘束を特徴量の動きに変換した.特徴量の動きにかかる拘束の幾何学的意味を解明することはできなかったが,画像平面内でフィードバックループを閉じる制御系,すなわち,ロボットの位置・姿勢を計測せずに完全に画像フィードバックのみで制御するロボット制御系を構成することが可能となった. 3. 幾何学的構造に基づく制御系設計・・・制御対象の幾何学的構造に着目し,幾何学的構造を積極的に利用するフィードバック制御器を設計する計画であったが,幾何学的構造の意味を明確にできなかったため,従来の非ホロノミック系に対する制御系設計法を画像ベースの視覚サーボ系に適用するにとどまった.しかし,ロボットにデッドレコニングの機能を与える必要がないので,完全な画像ベースの制御系を構成した意義は大きい.

  29. 動的環境における環境変化の予測と行動を一体化した視覚サーボ系の研究

    橋本 浩一, 木村 英紀

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 岡山大学

    1997 - 1997

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    画像は膨大な情報量を持つが,きわめて冗長性が高い.そこで,十分な精度を確保したままで冗長性の少ない情報の抽出法を検討した.その結果,画像の解像度を4段階にわけ,各々の特徴点に関して4枚のテンプレートを用いて対象物の移動速度に応じて使い分ける方法が追従速度および位置決め精度を確保するのに適していることがわかった.また,冗長な特徴量を用いることは位置決め精度の向上に効果があることを理論的に証明し,PUMA560ロボットを用いた実時間実験により確認した.このことから,画像処理的に安定な特徴量を冗長にとることの有効性が検証できた. 次に,視覚情報に基づいて3次元情報を精度良く求めるためのカメラ位置およびロボット姿勢について検討した.再構成される3次元情報の精度は,画像ヤコビ行列の条件数に依存し,この条件数が作業対象物の特徴量の選択に依存することがわかった.したがって,この条件数を最小にするように特徴量を選択することが精度と応答速度の両方の面から重要であることが示された. 一方,視覚サーボ系のモデルは,ロボットのダイナミクスを考慮しない場合には拘束条件つきの線形微分方程式で記述される.本研究では,ロボットのダイナミクスを考慮する場合,きわめて複雑な非線形微分方程式になることを示し,微分方程式の幾何学的構造の解析が合理的な制御系設計において重要であることを明らかにした.また,この非線形性のために,環境モデルの推定法は,従来の線形推定法では不十分であることがわかった.そこで,ロボットのダイナミクスと環境変動のダイナミクスを統一的に取り扱うために,作業の実施を環境の変動とロボットの運動からなる非線形関数として定義し,この関数の幾何学的構造の解明を試みた.大域的に拘束条件を記述する関数は求められていないが,局所的な性質は明らかになり,それを用いた制御系の構成法も求まった.本研究の当初の目的は完全には達成されてはいないが,局所的な性質がわかればそれを解析的に接続することにより大域的な性質に拡張できるので,本研究において視覚サーボ問題の本質を解明できたといえる.

  30. 行動に基づく環境認識の実現

    橋本 浩一, 木村 英紀

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 岡山大学

    1996 - 1996

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    1.実時間視覚情報処理アルゴリズムの開発 … 作業対象のモデルに基づき,フィードバック情報として実時間で使用可能な視覚情報処理のアルゴリズムを開発した.次に述べる定式化において,作業対象物の特徴量をフィードバックする「特徴ベース法」を用いたため,実時間処理アルゴリズムとしては特徴量抽出のみを行なうこととした. 2.視覚サーボ理論の定式化 … 従来の特徴ベース法の定式化では,特徴量ベクトルの次数がロボットの自由度より多い(冗長な)ときにはシステムは不可制御になっていた.本研究においては冗長な特徴量を有効に利用するための定式化を行ない,冗長性がロバスト性の向上および精度の改善に役立つことを証明した. 3.環境認識アルゴリズムの開発 … 環境内を移動する物体の運動推定アルゴリズムを導出した.これは一種の非線形オブザ-バであり,作業の実行が進むにつれて推定精度が向上する. 4.実験による評価 … 具体的な作業として,カメラを用いて運動する物体の追従を行なった.物体上の特徴量の次元を増加させることにより,追従精度が向上することを確認した.また,さまざまな運動形態に対しオブザ-バによる推定が可能であることを確認した. 5.問題点 … 現在,実環境(屋外)での作業や変動する環境内での物体追従は実行できない.これは画像処理を単純な特徴量抽出に限定しているためであり,実画像の処理が今後の課題と考える.運動制御および運動推定のアルゴリズムは汎用性を持つものであり,自律的に作業するロボットを構築するための重要なツールになることが期待される.

  31. 非ホロノミックシステムを対象とした視覚サーボ系に関する研究

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 岡山大学

    1996 - 1996

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    1.作業の過程の記述…作業環境のモデルとカメラの特性に基づき,ロボットの位置・姿勢とカメラによって得られる画像の関係を導出した.作業の状態を画像内の環境の像により定義し,この状態の関数として作業を記述した.ロボットのダイナミクスを考慮して作業の過程を微分方程式として記述した. 2.拘束条件の幾何学的構造の解明…ロボットの非ホロノミックな拘束条件を詳細に考察し,状態空間の幾何学的構造を明らかにした. 3.再モデリングと制御系設計…幾何学的構造を採り入れて再モデリングを行なった.その結果,「特徴ベース視覚サーボ法」が適用可能であることがわかった.画像平面内で作業の目標状態を生成することにより,目標物を見失うことなく移動できることがわかった.この手法を用いて閉ループ制御系を構成し,シミュレーションによりその有効性を確認した. 4.実験による評価…ラジコン模型自動車の上にカメラを設置し,視覚サーボによる誘導を行なった.ほぼ任意の初期姿勢から目標位置・姿勢に移動可能であることが確認された. 5.問題点…カメラの視野が狭く視覚サーボ法が適用できる初期姿勢に限界が存在する.また,模型自動車の運動特性がきわめて非線形であり,運動の再現性に乏しい.したがって,視覚による誘導の有効性は確認できたが,現状では精度が不十分である.

  32. 環境認識と運動制御を動的に結合した視覚サーボ系の研究

    橋本 浩一, 木村 英紀

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 重点領域研究

    Category: 重点領域研究

    Institution: 岡山大学

    1995 - 1995

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    平成7年度は以下の研究を行なった。 1.実時間視覚処理アルゴリズムの確立…作業対象にマークを付け,作業対象物ののモデルに基づき,フィードパック情報として実時間で使用可能な視覚情報処理のアルゴリズムを導出した.定式化において,作業対象物の画像中の「特徴」を表す量(特徴量)をフィードパックする「特徴ベース法」を用いたため,実時間処理アルゴリズムとしては特徴抽出だけを行なうことにした. 2.視覚サーボ理論の定式化…従来の特徴ベース法の定式化では,特徴量ベクトルの次数がロボットの自由度より多い(冗長な)ときには不可制御になり,特徴量の次数を減らす必要があった。これは画像が持つ情報量を捨てていたことになる.本研究においては,冗長な特徴量を有効に利用するための定式化を行ない,最適制御法,非線形制御法,オブザ-バを用いた方法などの制御法を導出した. 3.並列処理アルゴリズムの検討…実時間処理の総合的なアルゴリズムとアーキテクチャを検討,トランスピュータを用いた計算回路網を設計し,PUMA560に実装した. 4.実験による評価…未知の環境下でロボットに作業を実施させ,その効果を評価し問題点を明らかにした.非線形法は計算量の多さが問題となり,PUMA560における実装はできなかった.最適制御法は外乱に対して十分なロパスト性をもつことが示された.また,冗長な特徴量を利用することにより3次元位置の制御精度が格段に向上することが示された.さらに、オブザ-バは物体の運動を予測するのに有効であり,フィードバックのみの場合に比べて運動時の偏差の減少と運動速度の向上が確認された. 本研究では物体にマークをつけて認識部を簡略化していたが,作業対象物の背景からの切り出しや複雑な対象物の特徴量の抽出などの興味深い問題が残っている.

  33. 視覚サーボ系の幾何学的構造の解析と合理的な制御系設計に関する基礎研究

    橋本 浩一

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 奨励研究(A)

    Category: 奨励研究(A)

    Institution: 岡山大学

    1995 - 1995

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    平成7年度は以下の研究を行なった. 1.作業のモデル化…作業対象物の位置とロボットの関節角の関数として画像中の物体の像を記述し,作業のモデル化を行なった.まず,物体の運動を一般化座標系を用いて多様体上の点の運動として記述し,ロボットの運動も同様にして多様体上で記述した.カメラによる観測はこの二つの多様体の積集合から作業を記述する空間への写像として表現した.その結果,作業のモデルは非線形な拘束条件つきの非線形な写像となった. 2.幾何学的構造の解明…1.のモデルの拘束条件と写像の定義域・値域となる多様体の幾何学的構造を解析した結果,特異点が物体の形状に依存することがわかった.そこで物体を平面上の点の集合に限定した場合,4点以上であれば特異点がないことが証明された. 3.視覚サーボ系の制御理論的定式化…2.の定式化に物体の運動とロボットのダイナミクスを導入し,視覚サーボ系を動的システムとして記述した.従来の「特徴ベース法」の定式化では,特異点がなくなるように特徴量を選択するとシステムが不可制御になったが,本定式化においては,可制御性の問題を回避するために,特徴量ベクトルを多様体の接平面に写像して制御することにした. 4.幾何学的構造に基づく制御系設計…制御対象の幾何学的構造に注目し,作業を行なっている時のロボットダイナミクスと画像情報との相互関係を明確にし,これらのモデルに基づき環境の認識・推定機構と制御器の設計を行なった. 5.実験による評価…視覚フィードバックをともなういくつかの作業を実施した.物体の運動を推定するオブザ-バは計算量が多く6自由度の実験を行なうことができなかったが,2自由度の実験では有効性が確認された.また,特徴量が冗長な場合,特異点がなくなり,多様体の構造が単純なものになるため,線形化制御則が有効であることも実験的に確認できた.

  34. Basic Research on Visual Servo System which Dynamically Combines the Position/Force Control and Environment Recognition

    KIMURA Hidenori, HASHIMOTO Koichi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (B)

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: Osaka University

    1992 - 1994

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    Previous visual feedback control schemes assumed ideal tracking performance of the joint servo mechanisms. The robot dynamics wereneglected when designing the visual servo systems. Thus they were notsuitable for high speed motions. The investigators developed a newvisual servoing scheme which considers the visual servo system as a dynamical system and which computes the inverse dynamics of the visual servo system in the task level. However, the task level inverse dynamic scheme does not have the model of the object motion. Thus it only guarantees the convergence for the step motion of the object, in other words it is the type 1 servo system. Therefore errors are inevitable if the object moves continuously. The investigators formulated the conditions required to track the continuous object motions and proposed a tracking controller which adaptively estimates the object motions. The proposed control scheme is composed of two modules, one is a nonlinear observer which estimates the object motion and the other is the task level inverse dynamics based on the estimated object velocity. The investigators proved the asymptotic stability of the proposed method. The effectiveness of the proposed method is validated by the real time experiments on the 2 link direct drive robot. Moreover, a position/force controller was implemented on the 2 link DD robot and ball-on-ball control was performed. The ball-on ball controlis similar to the inverted pendulum. A small ball is controlled tokeep the top of the other larger ball which is attached to the end ofthe 2 link robot. The camera is used to obtain the small ball position which compensate the noisy output of the force sensor. The visual information is proven to be effective to stabilize the ball. At present the combination of the force control and the environment recognition is not satisfactory, but the nonlinear observer developed in this research project will play a important role in the future study.

  35. Basic Research of Visual Servo which Dynamically Combines Environment Recognition to Motion Control

    KIMURA Hidenori, HASHIMOTO Koichi, KAWATANI Ryoji, FUJII Takao

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (B)

    Category: Grant-in-Aid for General Scientific Research (B)

    Institution: Osaka University

    1989 - 1990

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    Visual servo system is a feedback control mechanism based on image information, which is essential in motion control of intelligent robots working in unstructured environments. In the conventional visual feedback system, environment recognition and motion control are performed sequentially in step by step manner. However, these conventional look and move schemes are deficient for fast and accurate manipulation. The purpose of this research project is to combine the environment recognition and the motion control dynamically so as to develop a new visual servo scheme in which the recognition and manipulation processes proceed complementing with each other. We have proposed a visual servo scheme called image-based dynamic visual servo, which is shown to be more accurate than the conventional scheme and to be robust against the measurement noises. The dynamics of this visual servo system is expressed by a state equation, based on which the optimal regulator can be used to stabilize the system. Realization of this visual servo system requires considerably powerful computing devices. Thus, we have developed a parallel processing system composed by ten 32-bits microprocessors--Transputers. Real-time image-based visual servo is implemented on this hardware system and PUMA 560. Though any Realistic manipulation can not be performed, some basic experiments verify the effectiveness of the proposed visual servo scheme. The visual servo scheme developed in this research project is derived by applying the available control theory to the image-based visual feedback system, which gives us no novel control theoretic framework of visual feedback. We found that, to build up new framework, robot dynamics must be included in the dynamics of visual servo system, and the inclusive mechanism must be treated as an augmented dynamic system. The results of this research project will become the bases of the future developments of visual feedback control theory.

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  1. ビジュアルトラッキングステージの開発

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    線虫を追跡するための電動ステージの共同開発

  2. 3次元蛍光画像ソフトウェア開発

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    神経細胞を3次元的に追跡するための画像処理手法の共同開発

  3. ロボティック内視鏡のための情報処理と制御

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    ロボティック内視鏡のための情報処理と制御

  4. 超分散マイクロアクティブセンシング

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    たくさんの微生物をアクティブに動かしてセンサとして用いるための基礎研究

  5. 食器洗浄・収納パートナロボットの開発

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    食器洗浄・収納用のロボット開発

  6. 微生物群によるオーガナイズドバイオモジュール

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    微生物群によるオーガナイズドバイオモジュール

  7. 水平独立協調ビルシステムアーキテクチャ研究

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    ビルネットワークシステムのアーキテクチャの研究

  8. 環境認識と運動制御を動的に結合した視覚サーボ系の研究

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    環境認識と運動制御を動的に結合した視覚サーボ系の研究

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