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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 5 — May. 17, 2007

Depth propagation across an illusory surface

Shigeaki Nishina, Arash Yazdanbakhsh, Takeo Watanabe, and Mitsuo Kawato  »View Author Affiliations

JOSA A, Vol. 24, Issue 4, pp. 905-910 (2007)

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We investigate the spatiotemporal dynamics of depth filling in on an illusory surface by measuring the temporal asynchrony of perceived depth between an illusory neon-colored surface and real contours. We temporally modulated the horizontal disparity at vertical edges of the illusory surface and measured the perceptual delay for the interpolated surface’s depth under two different boundary conditions: disparity given at both sides, or disparity given at one side and a free boundary at the other side. The results showed that the amount of the delay depends on the spatial distance between the measured point and the edges where disparity was physically given. Importantly, the observed delay as a function of spatial distance was clearly different under the two boundary conditions. We found that this difference can be fairly well explained by a model based on a diffusion equation under different boundary conditions. These results support the existence of locally represented depth information and an interpolation process based on mutual interaction of this information.

© 2007 Optical Society of America

OCIS Codes
(330.1400) Vision, color, and visual optics : Vision - binocular and stereopsis
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5510) Vision, color, and visual optics : Psychophysics

ToC Category:
Vision and color

Original Manuscript: June 12, 2006
Revised Manuscript: November 13, 2006
Manuscript Accepted: November 20, 2006
Published: March 14, 2007

Virtual Issues
Vol. 2, Iss. 5 Virtual Journal for Biomedical Optics

Shigeaki Nishina, Arash Yazdanbakhsh, Takeo Watanabe, and Mitsuo Kawato, "Depth propagation across an illusory surface," J. Opt. Soc. Am. A 24, 905-910 (2007)

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