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Featured researches published by Isao Ohashi.


Journal of The Society for Information Display | 2011

Control of subjective depth on 3‐D displays by a quantified monocular depth cue

Shuichi Takahashi; Takanori Ishikawa; Yasuhide Hyodo; Isao Ohashi; Yoshihide Shimpuku; Kazuya Matsubara; Kazumichi Matsumiya; Satoshi Shioiri

— This paper considers the architecture and the effectiveness of new algorithms that control the subjective depth on 3-D displays by modulating the contrast of stereoscopic pictures on the basis of a quantified monocular depth cue. First, a psychophysical experiment to quantify the relationship between contrast and subjective depth was conducted. This experimental result shows that the higher the contrast, the nearer the object will be perceived, corresponding to the qualitative relationship. Second, this result was applied to image-processing algorithms that expand or contract the subjective depth of stereoscopic pictures. Subjective assessments to verify the effectiveness of the algorithms were also conducted. The results suggest that the algorithms will allow viewers to experience a highly realistic sensation.


SID Symposium Digest of Technical Papers | 2011

61.1: Control of Subjective Depth in Stereoscopic Motion Pictures by Quantified Aerial Perspective

Shuichi Takahashi; Yasuhide Hyodo; An-Pang Lin; Isao Ohashi; Yoshihide Shimpuku; Kazuya Matsubara; Kazumichi Matsumiya; Satoshi Shioiri

Our previous study showed that the algorithm using quantified aerial perspective could control subjective depth in stereoscopic still pictures. Being integrated with a motion-estimation technique, this algorithm can be applied to motion pictures. In this paper, details of the algorithm and results of subjective assessment will be presented and discussed.


SID Symposium Digest of Technical Papers | 2010

58.4: Distinguished Paper: Control of Subjective Depth on 3-D Displays by a Quantified Monocular Depth Cue

Shuichi Takahashi; Takanori Ishikawa; Yasuhide Hyodo; Isao Ohashi; Yoshihide Shimpuku; Kazuya Matsubara; Kazumichi Matsumiya; Satoshi Shioiri

This paper considers the architecture and the effectiveness of new algorithms which control the subjective depth on 3-D displays by modulating the contrast of stereoscopic images on the basis of a quantified monocular depth cue. The results suggest that the algorithms will allow people to feel a highly realistic sensation.


Archive | 2012

THREE-DIMENSIONAL IMAGE CORRECTION DEVICE, THREE-DIMENSIONAL IMAGE CORRECTION METHOD, THREE-DIMENSIONAL IMAGE DISPLAY DEVICE, THREE-DIMENSIONAL IMAGE REPRODUCTION DEVICE, THREE-DIMENSIONAL IMAGE PROVISION SYSTEM, PROGRAM, AND RECORDING MEDIUM

Shuichi Takahashi; Isao Ohashi; Takuya Ooi; Kazunari Yoshifuji


Archive | 2008

System and method for displaying 3d video

Isao Ohashi; Takuya Oi; Shuichi Takahashi; Kazunari Yoshifuji; 一成 吉藤; 拓哉 大井; 功 大橋; 修一 高橋


Archive | 2011

Display device and control method of display device

Takanori Ishikawa; Kazunari Yoshifuji; Yota Komoriya; Isao Ohashi


Archive | 2010

SYNCHRONIZATION CIRCUITS AND METHODS USABLE IN SHUTTER GLASSES

Kazunari Yoshifuji; Isao Ohashi; Tsutomu Nigami; Atsuhiro Chiba


Archive | 2010

Shutter glasses and shutter control method

Atsuhiro Chiba; Isao Ohashi; Tsutomu Nigami; Kazunari Yoshifuji


Archive | 2008

Solid image correcting apparatus, solid image correcting method, solid image display, solid image reproducing apparatus, solid image presenting system, program, and recording medium

Isao Ohashi; Takuya Oi; Shuichi Takahashi; Kazunari Yoshifuji; 一成 吉藤; 拓哉 大井; 功 大橋; 修一 高橋


Archive | 2010

Three-dimensional image correction device, three-dimensional image correction method, three-dimensional image display device, three-dimensional image reproduction device, three-dimensional image provi

Shuichi Takahashi; Isao Ohashi; Takuya Ooi; Kazunari Yoshifuji

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