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Ryusuke SAGAWA
Department of Intelligent Media,
Institute of Scientific and Industrial Research, Osaka University,
8-1 Mihogaoka, Ibaraki-shi, Osaka, 567-0047, JAPAN
tel. +81-6-6879-8422
fax. +81-6-6877-4375

Japanese

I moved to AIST in April 2010. This page is not updated since then. My new page is here.

I was a graduate student of CVL at the University of Tokyo and I got my Ph.D. in March 2003.
My previous page is here.

Short CV

Research Topics

Merging of Range Images

Publications

Thesis

Journal Articles

  1. Ryo Furukawa, Hiroshi Kawasaki, Ryusuke Sagawa, Yasushi Yagi, "Shape from Grid Pattern Based on Coplanarity Constraints for One-shot Scanning", IPSJ Transactions on Computer Vision and Applications, vol.1, pp.139-157, Sep., 2009. (pdf)
  2. Y. Makihara, R. Sagawa, Y. Mukaigawa, T. Echigo, and Y. Yagi, "Gait Identification Considering Body Tilt by Walking Direction Changes", Electronic Letters on Computer Vision and Image Analysis, vol.8, no.1, pp.15--26, Apr., 2009.
  3. H. Vu, T. Echigo, R. Sagawa, K. Yagi, M. Shiba, K. Higuchi, T. Arakawa, Y. Yagi, "Detection of Contractions in Adaptive Transit Time of the Small Bowel from Wireless Capsule Endoscopy Videos", Computers in Biology and Medicine, vol.39, no.1, pp.16-26, 2009.
  4. H. Vu, T. Echigo, R. Sagawa, K. Yagi, M. Shiba, K. Higuchi, T. Arakawa, Y. Yagi, "Controlling the Display of Capsule Endoscopy Video for Diagnostic Assistance", IEICE Transactions on Information and Systems, vol.E92-D, no.3, pp.512-528, Mar., 2009.
  5. Ryusuke Sagawa, Katsushi Ikeuchi, "Hole Filling of a 3D Model by Flipping Signs of a Signed Distance Field in Adaptive Resolution" IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.30, no.4, pp.686-699, April, 2008.
  6. Hidetoshi Mannami, Ryusuke Sagawa, Yasuhiro Mukaigawa, Tomio Echigo, Yasushi Yagi, "Adaptive dynamic range camera with reflective liquid crystal", Journal of Visual Communication and Image Representation, vol.18, no.5, pp.359-365, Oct., 2007.
  7. K. Ikeuchi, T. Oishi, J. Takamatsu, R. Sagawa, A. Nakazawa, R. Kurazume, K. Nishino, M. Kamakura and Y. Okamoto, "The Great Buddha Project: Digitally Archiving, Restoring, and Analyzing Cultural Heritage Objects,", International Journal of Computer Vision, Vol. 75, No. 1, pp. 189-208, Oct. 2007.
  8. Y. Yagi, H. Vu, T. Echigo, R. Sagawa, K. Yagi, M. Shiba, K. Higuchi, T. Arakawa, "A diagnosis support system for capsule endoscopy", Inflammopharmacology, vol.15, no.2, pp.78-83, April, 2007
  9. Ryusuke Sagawa, Ko Nishino, Katsushi Ikeuchi, "Adaptively Merging Large-Scale Range Data with Reflectance Properties ", IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.27, no.3, pp.392--405, March, 2005.

Book Chapters

  1. "Digitally Archiving Cultural Objects", Katsushi Ikeuchi; Daisuke Miyazaki(Eds.), Chapter 7,9-12, Springer, December 2007, ISBN978-0-387-75806-0.
  2. "Modeling from Reality", Katsushi Ikeuchi; Yoichi Sato (Eds.), Chapter 8, Kluwer Academic Pub., October, 2001, ISBN978-0792375159.

Refereed Conference Papers

    2009

  1. Ryusuke Sagawa, Yuya Ohta, Yasushi Yagi, Ryo Furukawa, Naoki Asada, Hiroshi Kawasaki, "Dense 3D Reconstruction Method Using a Single Pattern for Fast Moving Object", In Proc. 2009 IEEE 12th International Conference on Computer Vision, pp.1779-1786, Kyoto, Sep., 2009. (pdf) (movie)
  2. Ryusuke Sagawa, Kiyotaka Akasaka, Yasushi Yagi, Henning Hamer, Luc Van Gool, "Elastic Convolved ICP for the Registration of Deformable Objects", In Proc. 2009 IEEE 12th International Conference on Computer Vision Workshops (3DIM2009), pp.1558-1565, Kyoto, Oct., 2009. (pdf) (movie)
  3. Thanh Trung Ngo, Hajime Nagahara, Ryusuke Sagawa, Yasuhiro Mukaigawa, Masahiko Yachida, Yasushi Yagi "An Adaptive-Scale Robust Estimator for Motion Estimation", In Proc. 2009 IEEE International Conference on Robotics and Automation, pp. 2455-2460, May 12-17, 2009
  4. H. Vu, T. Echigo, R. Sagawa, K. Yagi, M. Shiba, K. Higuchi, T. Arakawa, Y. Yagi, "Towards an Interpretation of Intestinal Motility Using Capsule Endoscopy Image Sequences", In Proc. of the PSIVT 2009, Toshikazu Wada, Fay Huang, Stephen Lin, vol.LNCS 5414, pp.839--850, Springer, 2009.
  5. H. Vu, T. Echigo, R. Sagawa, K. Yagi, M. Shiba, K. Higuchi, T. Arakawa, Y. Yagi, "Evaluating the Control of the Adaptive Display Rate for Video Capsule Endoscopy Diagnosis", In Proceedings of the 2008 IEEE International Conference on Robotics and Biomimetics, pp.74-79, Feb., 2009.
  6. H. Vu, T. Echigo, R. Sagawa, K. Yagi, M. Shiba, K. Higuchi, T. Arakawa, Y. Yagi, "Computer-Assisted Intestinal Contraction Detections In Small Bowel From Wireless Capsule Endoscopy Image Sequence ", In Proceeding of the 2nd International Gastrointestinal Consensus Symposium (IGICS), vol.Digestion 2009; 79 (suppl 1):53-77, pp.67, Tokyo, Japan, Jan, 2009.

    7. 2008

  7. Chunsheng Hua, Ryusuke Sagawa, Yasushi Yagi, "Scale-Invariant Density-Based Clustering Initialization Algorithm and Its Application", In Proc. of the 19th Int. Conf. on Pattern Recognition, Tampa, Florida USA, Dec., 2008.
  8. Ryusuke Sagawa, Takurou Sakai, Tomio Echigo, Keiko Yagi, Masatsugu Shiba, Kazuhide Higuchi, Tetsuo Arakawa, Yasushi Yagi, "Omnidirectional Vision Attachment for Medical Endoscopes", In Proc. the Eighth Workshop on Omnidirectional Vision, Camera Networks and Non-classical Cameras, Marseille, France, October 17, 2008. (pdf)
  9. Ryo Furukawa, Huynh Quang Huy Viet, Hiroshi Kawasaki, Ryusuke Sagawa and Yasushi Yagi, "One-Shot Range Scanner Using Coplanarity Constraints" In Proc. of IEEE Int'l. Conf. on Image Processing 2008, pp.1524-1527, San Diego, USA, 2008.
  10. Ryo Furukawa, Hiroshi Kawasaki, Ryusuke Sagawa, Yasushi Yagi "3D Scanning Method for Fast Motion using Single Grid Pattern with Coarse-to-fine Technique" In Proc. British Machine Vision Conference 2008, Leeds, UK, September 1-4, 2008.
  11. Hiroshi Kawasaki, Ryo Furukawa, Ryusuke Sagawa, Yasushi Yagi "Dynamic scene shape reconstruction using a single structured light pattern" In Proc. IEEE Conference on Computer Vision and Pattern Recognition, 2008 Anchorage, USA, pp. 1-8, June 24-26, 2008.
  12. Ryusuke Sagawa, Yasushi Yagi, "Accurate Calibration of Intrinsic Camera Parameters by Observing Parallel Light Pairs", In Proc. 2008 IEEE International Conference on Robotics and Automation, Pasadena, USA, pp. 1390-1397, May 21-23, 2008. (pdf, MATLAB codes and data) Finalist for Best Vision Paper
  13. Thanh Trung Ngo, Hajime Nagahara, Ryusuke Sagawa, Yasuhiro Mukaigawa, Masahiko Yachida, Yasushi Yagi "Robust and Real-Time Egomotion Estimation Using a Compound Omnidirectional Sensor", In Proc. 2008 IEEE International Conference on Robotics and Automation, Pasadena, USA, pp. 492-497, May 21-23, 2008.

    14. 2007

  14. Ryusuke Sagawa, Nobuya Aoki, Yasushi Yagi, "Mirror Localization for Catadioptric Imaging System by Observing Parallel Light Pairs", In Proc. 8th Asian Conference on Computer Vision, LNCS 4843, pp.116--126 Tokyo, Japan, Nov. 18-22, 2007. (pdf)
  15. Hai Vu, Tomio Echigo, Ryusuke Sagawa, Keiko Yagi, Masatsugu Shiba, Kazuhide Higuchi, Tetsuo Arakawa, Yasushi Yagi, "Contraction Detection in Small Bowel from an Image Sequence of Wireless Capsule Endoscopy", In Proc. Medical Image Computing and Computer-Assisted Intervention (MICCAI 2007), LNCS 4791, pp.775--783, Springer, 2007.
  16. Hidetoshi Mannami, Ryusuke Sagawa, Yasuhiro Mukaigawa, Tomio Echigo, Yasushi Yagi, "High Dynamic Range Camera using Reflective Liquid Crystal", In Proc. IEEE International Conference on Computer Vision, Rio de Janeiro, Brazil, October 14-20, 2007.
  17. Ryusuke Sagawa, Nanaho Osawa, Yasushi Yagi, "Deformable Registration of Textured Range Images by Using Texture and Shape Features", In Proc. The 6th International Conference on 3-D Digital Imaging and Modeling, pp.65--72, Montreal, Canada, August 21-23, 2007. (pdf)
  18. Kiyotaka Akasaka, Ryusuke Sagawa, Yasushi Yagi, "A Sensor for Simultaneously Capturing Texture and Shape by Projecting Structured Infrared Light", In Proc. The 6th International Conference on 3-D Digital Imaging and Modeling, pp.375--381, Montreal, Canada, August 21-23, 2007. (pdf)
  19. Ryusuke Sagawa, Nobuya Aoki, Yasuhiro Mukaigawa, Tomio Echigo, Yasushi Yagi, "Mirror Localization for a Catadioptric Imaging System by Projecting Parallel Lights", In Proc. IEEE International Conference on Robotics and Automation, pp.3957--3962, Rome, Italy, April 10-14, 2007. (pdf)
  20. Trung Ngo Thanh, Hajime Nagahara, Ryusuke Sagawa, Yasuhiro Mukaigawa, Masahiko Yachida, Yasushi Yagi, "Robust and Real-time Rotation Estimation of Compound Omnidirectional Sensor", In Proc. IEEE International Conference on Robotics and Automation, pp.4226--4231, Rome, Italy, April 10-14, 2007.

    21. 2006

  21. Ryusuke Sagawa, Yasushi Makihara, Tomio Echigo, Yasushi Yagi "Matching Gait Image Sequences in the Frequency Domain for Tracking People at a Distance", Proc. 7th Asian Conference on Computer Vision, LNCS 3852, pp.141--150, 2006 (pdf)
  22. E. Mouaddib, R. Sagawa, T. Echigo, Y. Yagi, "Two or more mirrors for the omnidirectional stereovision?", In Proc. of The second IEEE-EURASIP International Symposium on Control, Communications, and Signal Processing, Marrakech, Morocco, March 13-15, 2006.
  23. Yasushi Yagi, Tetsuo Arakawa, Kazuhide Higuchi, Masatsugu Shiba, Keiko Yagi, Ryusuke Sagawa, Vu Hai, Tomio Echigo, "Adaptive Display Speed Control for Diagnosis of Capsule Endoscopic Images", In Program & Abstracts of The 5th International Conference on Capsule Endoscopy, pp.83, Boca Raton, Florida, USA, March 6-7, 2006. Distinguished Poster Award
  24. Yasushi Makihara, Ryusuke Sagawa, Yasuhiro Mukaigawa, Tomio Echigo, Yasushi Yagi, "Gait Recognition Using a View Transformation Model in the Frequency Domain", In Proc. of the 9th European Conf. on Computer Vision, vol.3, pp.151--163, Graz, Austria, May, 2006.
  25. Ryusuke Sagawa, Nanaho Osawa, Yasushi Yagi, "A Probabilistic Method for Aligning and Merging Range Images with Anisotropic Error Distribution", In Proc. Third International Symposium on 3D Data Processing, Visualization and Transmission, Chapel Hill, USA, June, 2006 (pdf) (movie1)
  26. Yasushi Makihara, Ryusuke Sagawa, Yasuhiro Mukaigawa, Tomio Echigo, Yasushi Yagi, "Which Reference View is Effective for Gait Identification Using a View Transformation Model?", In Proc. of the IEEE Computer Society Workshop on Biometrics 2006, New York, USA, Jun., 2006.
  27. Yasushi Yagi, Hai Vu, Tomio Echigo, Ryusuke Sagawa, Keiko Yagi, Masatsugu Shiba, Kazuhide Higuchi, Tetsuo Arakawa, "Diagnosis Supporting System for Capsule Endoscopy", In Proc. International Conference on Ulcer Research (ICUR), July, 2006
  28. Yasushi Makihara, Ryusuke Sagawa, Yasuhiro Mukaigawa, Tomio Echigo, Yasushi Yagi, "Adaptation to Walking Direction Changes for Gait Identification", In Proc. of the 18th Int. Conf. on Pattern Recognition, vol.2, pp.96--99, Hong Kong, China, Aug., 2006.
  29. Vu Hai, Tomio Echigo, Ryusuke Sagawa, Keiko Yagi, Masatsugu Shiba, Kazuhide Higuchi, Tetsuo Arakawa, Yasushi Yagi, "Adaptive Control of Video Display for Diagnostic Assistance by Analysis of Capsule Endoscopic Images", In Proc. of the 18th Int. Conf. on Pattern Recognition, vol.3, pp.980--983, Hong Kong, China, Aug., 2006.

    30. 2005

  30. E. Mouaddib, R. Sagawa, T. Echigo, Y. Yagi, "Stereo Vision with a Single Camera and Multiple Mirrors", IEEE International Conference on Robotics and Automation, ICRA2005, Barcelona, Spain, April 18-22, 2005
  31. Ryusuke Sagawa, Masaya Takatsuji, Tomio Echigo, Yasushi Yagi, "Calibration of Lens Distortion by Structured-Light Scanning ", In Proc. 2005 IEEE/RSJ International Conference on Intelligent Robots and Systems, pp.1349--1354, Edmonton, Canada, August 2-5, 2005. (pdf)
  32. Ryusuke Sagawa, Nanaho Osawa, Tomio Echigo, Yasushi Yagi, "Real Time 3D Environment Modeling for a Mobile Robot by Aligning Range Image Sequences", Proc. British Machine Vision Conference 2005, vol.1, pp.330-339, Oxford, UK, September, 2005. (pdf)
  33. Yuichiro Kojima, Ryusuke Sagawa, Tomio Echigo, Yasushi Yagi, "Calibration and Performance Evaluation of Omnidirectional Sensor with Compound Spherical Mirrors", In Proc. The 6th Workshop on Omnidirectional Vision, Camera Networks and Non-classical cameras, 2005.
  34. Suchit Pongnumkul, Ryusuke Sagawa, Tomio Echigo, Yasushi Yagi, "Deformable Registration for Generating Dissection Image of an Intestine from Annular Image Sequence", In Proc. Computer Vision for Biomedical Image Applications, pp.271--280, 2005.

    35. 2004

  35. Yu Ohara, Ryusuke Sagawa, Tomio Echigo, Yasushi Yagi, "Walking Person Identification Dealing With Resolution and Appearance Changes", In Proc. of Korea-Japan Joint Workshop on Frontiers of Computer Vision, pp.89--94, February, 2004.
  36. Yu Ohara, Ryusuke Sagawa, Tomio Echigo, Yasushi Yagi, "Gait Volume: Spatio-Temporal Analysis of Walking", In Proc. The fifth Workshop on Omnidirectional Vision, Camera Networks and Non-classical cameras (OMNIVIS2004), Prague, Czech, May, 2004 (pdf)
  37. Ryusuke Sagawa, Naoki Kurita, Tomio Echigo, Yasushi Yagi, "Compound Catadioptric Stereo Sensor for Omnidirectional Object Detection", In Proc. IEEE/RSJ International Conference on Intelligent Robots and Systems, vol.2, pp.2612-2617, Sendai, Japan, Sep., 2004. (pdf)

    38. 2003

  38. Ryusuke Sagawa, Katsushi Ikeuchi, "Taking Consensus of Signed Distance Field for Complementing Unobservable Surface", Proc. International Conference on 3-D Digital Imaging and Modeling, pp.410-417, 2003 (pdf) (movie1) (movie2)
  39. Takeshi Oishi, Ryusuke Sagawa, Atsushi Nakazawa, Ryo Kurazume, Katsushi Ikeuchi, "Parallel Alignment of a Large Number of Range Images", Proc. International Conference on 3-D Digital Imaging and Modeling, pp.195-202, 2003
  40. Ryusuke Sagawa, Tomohito Masuda, Katsushi Ikeuchi, "Effective Nearest Neighbor Search for Aligning and Merging Range Images", Proc. International Conference on 3-D Digital Imaging and Modeling, pp.79-86, 2003 (pdf)

    41. 2002

  41. Ryusuke Sagawa, Takeshi Oishi, Atsushi Nakazawa, Ryo Kurazume, Katsushi Ikeuchi, "Iterative Refinement of Range Images with Anisotropic Error Distribution", Proc. IEEE/RSJ International Conference on Intelligent Robots and Systems, pp.79-85, October 2002 (pdf)
  42. S. Yamazaki, R. Sagawa, H. Kawasaki, K. Ikeuchi, M. Sakauchi, "Microfacet Billboarding", Proc. Eurographics Workshop on Rendering 2002, pp.175-186, June, 2002 (pdf)

    43. 2001

  43. R. Sagawa, K. Nishino, K. Ikeuchi, "Robust and Adaptive Integration of Multiple Range Images with Photometric Attributes", Proc. IEEE Computer Society Conference on Computer Vision and Pattern Recognition, vol.2, pp.172-179, 2001 (pdf)
  44. R. Sagawa, K. Nishino, M.D. Wheeler, K. Ikeuchi, "Parallel Processing of Range Data Merging", Proc. IEEE/RSJ International Conference on Intelligent Robots and Systems, vol.1, pp.577-583, 2001, Maui, October (pdf)

    45. 2000

  45. K. Ikeuchi, Y. Sato, K. Nishino, R. Sagawa, T. Nishikawa, T. Oishi, I. Sato, J. Takamatsu, D. Miyazaki, "Modeling Cultural Heritage through Observation", Proc. of IEEE First Pacific-Rim Conference on Multimedia, Dec., 2000.
  46. D. Miyazaki, T. Ooishi, T. Nishikawa, R. Sagawa, K. Nishino, T. Tomomatsu, Y. Takase, K. Ikeuchi, "The Great Buddha Project: Modelling Cultural Heritage through Observation", Proc. 6th International Conference on Virtual Systems and MultiMedia, pp.138-145, 2000, Gifu Best Paper Award
  47. R. Sagawa, K. Okada, S. Kagami, M. Inaba, H. Inoue, "Incremental Mesh Modeling and Hierarchical Object Recognition using Multiple Range Images", Proc. 2000 IEEE/RSJ International Conference on Intelligent Robots and Systems, pp.88-95, October, 2000, vol. 1 (pdf)