Dr. Takashi Shibata Profile

Dr. Takashi Shibata

at Tokyo Univ of Social Welfare

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 28 February 2014 Paper

Ergonomic approaches to designing educational materials for immersive multi-projection system

Takashi Shibata, JaeLin Lee, Tetsuri Inoue

Proceedings Volume 9012, 90120Q (2014) https://doi.org/10.1117/12.2042622

KEYWORDS: Visualization, Virtual reality, 3D modeling, 3D image processing, 3D displays, 3D vision, Safety, Display technology, Displays, Computer simulations

Read Abstract +

Proceedings Article | 16 May 2013 Paper

Insight into vergence/accommodation mismatch

Martin Banks, Joohwan Kim, Takashi Shibata

Proceedings Volume 8735, 873509 (2013) https://doi.org/10.1117/12.2019866

KEYWORDS: Eye, Visualization, Neck, Televisions, Head, 3D volumetric displays, Computer simulations, Mobile devices, Optical calibration

Read Abstract +

Proceedings Article | 12 March 2013 Paper

Comfortable stereo viewing on mobile devices

Takashi Shibata, Fumiya Muneyuki, Keisuke Oshima, Junki Yoshitake, Takashi Kawai

Proceedings Volume 8648, 86481D (2013) https://doi.org/10.1117/12.2005774

KEYWORDS: Visualization, Mobile devices, 3D image processing, 3D displays, Video, Prisms, Televisions, 3D vision, Distance measurement, Visual system

Read Abstract +

Proceedings Article | 15 February 2011 Paper

Visual discomfort with stereo displays: effects of viewing distance and direction of vergence-accommodation conflict

Takashi Shibata, Joohwan Kim, David Hoffman, Martin Banks

Proceedings Volume 7863, 78630P (2011) https://doi.org/10.1117/12.872347

KEYWORDS: Visualization, Eye, Televisions, Neck, 3D volumetric displays, Head, Computer simulations, Mobile devices, Optical calibration

Read Abstract +

Proceedings Article | 19 February 2009 Paper

Stereoscopic camera system with creator-friendly functions

Shinsuke Kishi, Nobuaki Abe, Takashi Shibata, Takashi Kawai, Makoto Maeda, Kouichi Hoshi

Proceedings Volume 7237, 72371M (2009) https://doi.org/10.1117/12.807245

KEYWORDS: Cameras, Safety, Imaging systems, Stereoscopic cameras, Visualization, Image processing, Control systems, Stereoscopic displays, Prototyping, 3D image processing

Read Abstract +

Proceedings Article | 19 February 2009 Paper

Evaluation of stereoscopic image quality for mobile devices using interpretation based quality methodology

Takashi Shibata, Shunsuke Kurihara, Takashi Kawai, Tsuyoshi Takahashi, Tomoyuki Shimizu, Ryoichi Kawada, Atsushi Ito, Jukka Häkkinen, Jari Takatalo, Göte Nyman

Proceedings Volume 7237, 72371E (2009) https://doi.org/10.1117/12.807080

KEYWORDS: 3D displays, 3D image processing, Mobile devices, Image quality, Visualization, 3D vision, Glasses, Large screens, Small screens, 3D visualizations

Read Abstract +

Proceedings Article | 29 February 2008 Paper

Scalable 3D image conversion and ergonomic evaluation

Shinsuke Kishi, Sang Hyun Kim, Takashi Shibata, Takashi Kawai, Jukka Häkkinen, Jari Takatalo, Göte Nyman

Proceedings Volume 6803, 68030F (2008) https://doi.org/10.1117/12.765990

KEYWORDS: 3D image processing, 3D displays, Visualization, Safety, Prototyping, Image analysis, 3D imaging standards, Software development, Standards development, Algorithm development

Read Abstract +

Proceedings Article | 30 January 2006 Paper

Ergonomic evaluation system for stereoscopic video production

T. Kawai, S. Kishi, T. Yamazoe, T. Shibata, T. Inoue, Y. Sakaguchi, K. Okabe, Y. Kuno, T. Kawamoto

Proceedings Volume 6055, 60551B (2006) https://doi.org/10.1117/12.647329

KEYWORDS: Safety, Video, Prototyping, Visualization, Optical flow, Stereoscopic displays, Standards development, Eye, Image processing, Information visualization

Read Abstract +

Proceedings Article | 27 January 2006 Paper

Evaluation of stereoscopic medical video content on an autostereoscopic display for undergraduate medical education

Justus Ilgner, Takashi Kawai, Takashi Shibata, Takashi Yamazoe, Martin Westhofen

Proceedings Volume 6055, 605506 (2006) https://doi.org/10.1117/12.647591

KEYWORDS: Video, Surgery, Autostereoscopic displays, LCDs, Cartilage, Video processing, Glasses, CRTs, Visualization, Ear

Read Abstract +

Introduction: An increasing number of surgical procedures are performed in a microsurgical and minimally-invasive fashion. However, the performance of surgery, its possibilities and limitations become difficult to teach. Stereoscopic video has evolved from a complex production process and expensive hardware towards rapid editing of video streams with standard and HDTV resolution which can be displayed on portable equipment. This study evaluates the usefulness of stereoscopic video in teaching undergraduate medical students. Material and methods: From an earlier study we chose two clips each of three different microsurgical operations (tympanoplasty type III of the ear, endonasal operation of the paranasal sinuses and laser chordectomy for carcinoma of the larynx). This material was added by 23 clips of a cochlear implantation, which was specifically edited for a portable computer with an autostereoscopic display (PC-RD1-3D, SHARP Corp., Japan). The recording and synchronization of left and right image was performed at the University Hospital Aachen. The footage was edited stereoscopically at the Waseda University by means of our original software for non-linear editing of stereoscopic 3-D movies. Then the material was converted into the streaming 3-D video format. The purpose of the conversion was to present the video clips by a file type that does not depend on a television signal such as PAL or NTSC. 25 4th year medical students who participated in the general ENT course at Aachen University Hospital were asked to estimate depth clues within the six video clips plus cochlear implantation clips. Another 25 4th year students who were shown the material monoscopically on a conventional laptop served as control. Results: All participants noted that the additional depth information helped with understanding the relation of anatomical structures, even though none had hands-on experience with Ear, Nose and Throat operations before or during the course. The monoscopic group generally estimated resection depth to much lesser values than in reality. Although this was the case with some participants in the stereoscopic group, too, the estimation of depth features reflected the enhanced depth impression provided by stereoscopy. Conclusion: Following first implementation of stereoscopic video teaching, medical students who are inexperienced with ENT surgical procedures are able to reproduce depth information and therefore anatomically complex structures to a greater extent following stereoscopic video teaching. Besides extending video teaching to junior doctors, the next evaluation step will address its effect on the learning curve during the surgical training program.

Proceedings Article | 27 January 2006 Paper

Examination of asthenopia recovery using stereoscopic 3D display with dynamic optical correction

Takashi Shibata, Takashi Kawai, Keiji Ohta, JaeLin Lee, Masaki Otsuki, Nobuyuki Miyake, Yoshihiro Yoshihara, Tsuneto Iwasaki

Proceedings Volume 6055, 60550E (2006) https://doi.org/10.1117/12.645674

KEYWORDS: 3D displays, Visualization, 3D image processing, Refraction, 3D vision, Eye, Stereoscopic displays, 3D acquisition, Optical calibration, LCDs

Read Abstract +

Proceedings Article | 22 March 2005 Paper

Stereoscopic 3D display with dynamic optical correction for recovering from asthenopia

Takashi Shibata, Takashi Kawai, Masaki Otsuki, Nobuyuki Miyake, Yoshihiro Yoshihara, Tsuneto Iwasaki

Proceedings Volume 5664, (2005) https://doi.org/10.1117/12.587396

KEYWORDS: 3D displays, Visualization, 3D image processing, Eye, Optical calibration, Stereoscopic displays, 3D vision, Refraction, LCDs, 3D acquisition

Read Abstract +

Proceedings Article | 21 May 2004 Paper

Development and evaluation of amusement machine using autostereoscopic 3D display

Takashi Kawai, Takashi Shibata, Yoichi Shimizu, Mitsuhiro Kawata, Masahiro Suto

Proceedings Volume 5291, (2004) https://doi.org/10.1117/12.526428

KEYWORDS: 3D displays, 3D image processing, LCDs, Visualization, Eye, Multimedia, Image filtering, Switching, Time metrology, Polarizers

Read Abstract +

Proceedings Article | 21 May 2004 Paper

Production and evaluation of stereoscopic video presentation in surgical training

Justus Ilgner, Takashi Kawai, Martin Westhofen, Takashi Shibata

Proceedings Volume 5291, (2004) https://doi.org/10.1117/12.524274

KEYWORDS: Video, LCDs, CRTs, Surgery, Visualization, Video processing, Glasses, Microscopes, Digital video recorders, Camera shutters

Read Abstract +

Proceedings Article | 30 May 2003 Paper

Examination of a stereoscopic 3D display system using a correction lens

Takashi Kawai, Takashi Shibata, Keiji Ohta, Yoshihiro Yoshihara, Tetsuri Inoue, Tsuneto Iwasaki

Proceedings Volume 5006, (2003) https://doi.org/10.1117/12.474154

KEYWORDS: 3D image processing, 3D displays, Visualization, Refraction, 3D vision, Glasses, 3D acquisition, Optical filters, Eye, LCDs

Read Abstract +

Proceedings Article | 23 May 2002 Paper

Development of software for editing of stereoscopic 3-D movies

Takashi Kawai, Takashi Shibata, Tetsuri Inoue, Yusuke Sakaguchi, Kazushige Okabe, Yasuhiro Kuno

Proceedings Volume 4660, (2002) https://doi.org/10.1117/12.468075

KEYWORDS: Software development, 3D displays, 3D image processing, Video, Distance measurement, Visualization, Stereoscopic displays, Video compression, Digital video recorders, Image fusion

Read Abstract +

Proceedings Article | 23 May 2002 Paper

Development of an electro-optical 3D adapter for stereoscopic video recording

Takashi Shibata, Takashi Kawai, Tetsuri Inoue, Yusuke Sakaguchi, Kazushige Okabe, Yasuhiro Kuno

Proceedings Volume 4660, (2002) https://doi.org/10.1117/12.468046

KEYWORDS: 3D image processing, Electro optics, Video, Standards development, Electro optical design, Liquid crystals, Camera shutters, Vignetting, Calibration, 3D imaging standards

Read Abstract +

Proceedings Article | 3 May 2000 Paper

Production of stereoscopic 3D movies of a Spanish monastery for a digital archive

Takashi Kawai, Takashi Shibata, Takayoshi Mochizuki, Kageyu Noro

Proceedings Volume 3957, (2000) https://doi.org/10.1117/12.384453

KEYWORDS: 3D image processing, Cultural heritage, Virtual reality, 3D modeling, Cameras, Video, Stereoscopic displays, Inspection, Digital cameras, Stereoscopic cameras

Read Abstract +

Showing 5 of 17 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years