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Paper Abstract and Keywords
Presentation 2012-12-02 14:25
Dynamic property of binocular disparity channels for very large depth -- Examination of spatial frequency (or size) tuning using DoG targets --
Masayuki Sato (Univ. of Kitakyushu), Shoji Sunaga (Kyushu Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) It is well-known that an excessive disparity causes diplopia and unclear depth impression. However, we recently found that target motion facilitates stereopsis for very large depth. To examine the spatiotemporal characteristics of the responsible mechanism we compared contrast sensitivities between a static and a dynamic condition using one-dimensional DoG targets. The space constant σ of positive Gaussian was ranged from 0.11 to 2.3 deg, corresponding to 1.6-0.08 c/deg peak special frequency. The results show that sensitivity dropped substantialy for large disparity range in the static condition while high sensitivity remained until much larger disparity range in the dynamic condition and that the highest sensitivity was obtained for the target with the space constant of 0.38-1.1 deg, corresponding to 0.48-0.16 c/deg. It appears that a dynamic mechanism tuned to that spatial frequency range or size mediates stereopsis for large depth.
Keyword (in Japanese) (See Japanese page) 
(in English) Binocular disparity / Depth perception / Spatial frequency / Size / Dynamic property / / /  
Reference Info. ITE Tech. Rep., vol. 36, no. 52, HI2012-81, pp. 13-15, Dec. 2012.
Paper # HI2012-81 
Date of Issue 2012-11-25 (HI) 
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee HI  
Conference Date 2012-12-02 - 2012-12-02 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa Industry Support Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Human information, etc. 
Paper Information
Registration To HI 
Conference Code 2012-12-HI 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Dynamic property of binocular disparity channels for very large depth 
Sub Title (in English) Examination of spatial frequency (or size) tuning using DoG targets 
Keyword(1) Binocular disparity  
Keyword(2) Depth perception  
Keyword(3) Spatial frequency  
Keyword(4) Size  
Keyword(5) Dynamic property  
1st Author's Name Masayuki Sato  
1st Author's Affiliation The University of Kitakyushu (Univ. of Kitakyushu)
2nd Author's Name Shoji Sunaga  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
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Date Time 2012-12-02 14:25:00 
Presentation Time 30 
Registration for HI 
Paper # ITE-HI2012-81 
Volume (vol) ITE-36 
Number (no) no.52 
Page pp.13-15 
#Pages ITE-3 
Date of Issue ITE-HI-2012-11-25 

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