Mr. Takeshi Koishi Profile

Takeshi Koishi

at Chiba Univ

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 13 March 2009 Paper

Deformable hollow organ models with self-collision processing between inner surfaces

K. Nishimura, T. Koishi, T. Nakaguchi, S. Morita, N. Tsumura, Y. Miyake

Proceedings Volume 7261, 726127 (2009) https://doi.org/10.1117/12.811579

KEYWORDS: Finite element methods, Natural surfaces, Surgery, Solid modeling, Computer simulations, Systems modeling, Visualization, Virtual colonoscopy, Stomach, Intestine

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Proceedings Article | 13 March 2009 Paper

Absolute length measurement using manually decided stereo correspondence for endoscopy

M. Sasaki, T. Koishi, T. Nakaguchi, N. Tsumura, Y. Miyake

Proceedings Volume 7261, 72610B (2009) https://doi.org/10.1117/12.811592

KEYWORDS: Endoscopy, Cameras, Sensors, Endoscopes, Calibration, Magnetic sensors, Magnetic tracking, Distortion, Magnetism, Photogrammetry

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Proceedings Article | 24 March 2008 Paper

A navigation system using projection images of laparoscopic instruments and a surgical target with improved image quality

Takeshi Koishi, Suguru Ushiki, Toshiya Nakaguchi, Hideki Hayashi, Norimichi Tsumura, Yoichi Miyake

Proceedings Volume 6918, 691810 (2008) https://doi.org/10.1117/12.770961

KEYWORDS: Laparoscopy, Surgery, Navigation systems, Sensors, Calibration, Projection systems, Cameras, Electromagnetism, Image quality, Distortion

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Proceedings Article | 17 March 2008 Paper

A fast stereo matching algorithm for 3D reconstruction of internal organs in laparoscopic surgery

Yoshimichi Okada, Takeshi Koishi, Suguru Ushiki, Toshiya Nakaguchi, Norimichi Tsumura, Yoichi Miyake

Proceedings Volume 6918, 69182K (2008) https://doi.org/10.1117/12.770818

KEYWORDS: Reconstruction algorithms, Laparoscopy, 3D modeling, Image registration, Cameras, Surgery, Optimization (mathematics), Stereoscopic cameras, Infrared imaging, 3D image processing

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Proceedings Article | 22 March 2007 Paper

Forceps insertion supporting system in laparoscopic surgery: image projection onto the abdominal surface

Takeshi Koishi, Suguru Ushiki, Toshiya Nakaguchi, Hideki Hayashi, Norimichi Tsumura, Yoichi Miyake

Proceedings Volume 6509, 65091Q (2007) https://doi.org/10.1117/12.709290

KEYWORDS: Surgery, Laparoscopy, Distortion, Projection systems, Abdomen, Image quality, Sensors, Medical imaging, Glasses, Natural surfaces

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