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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 16, Iss. 5 — May. 1, 1999
  • pp: 987–994

Comparison of motion and stereopsis: linear and nonlinear performance

R. F. Hess, C. L. Baker, Jr., and L. M. Wilcox  »View Author Affiliations


JOSA A, Vol. 16, Issue 5, pp. 987-994 (1999)
http://dx.doi.org/10.1364/JOSAA.16.000987


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Abstract

To address the issue of whether the luminance-dependent (linear) and contrast-dependent (nonlinear) processes in stereo and motion have a common computational basis, we compare both carrier-dependent and envelope-dependent performance for these two modalities by using the same stimulus and task: two-flash apparent motion/depth for a wide range of displacements. We do this for different densities, bandwidths, contrasts, spatial frequencies, and exposure durations. The results suggest that there is concordance not only between the luminance-dependent (linear) processes of motion and stereo but also between the envelope-dependent (nonlinear) processes of both modalities. Only one exception was found, but we show this to be amenable to an explanation based on a different contrast dependence for the nonlinear mechanisms of stereo and motion. This suggests that the computational basis of linear and nonlinear processes may be similar for stereopsis and motion.

© 1999 Optical Society of America

OCIS Codes
(330.1400) Vision, color, and visual optics : Vision - binocular and stereopsis
(330.4150) Vision, color, and visual optics : Motion detection
(330.5510) Vision, color, and visual optics : Psychophysics
(330.6790) Vision, color, and visual optics : Temporal discrimination

History
Original Manuscript: July 24, 1998
Revised Manuscript: December 4, 1998
Manuscript Accepted: December 9, 1998
Published: May 1, 1999

Citation
R. F. Hess, C. L. Baker, and L. M. Wilcox, "Comparison of motion and stereopsis: linear and nonlinear performance," J. Opt. Soc. Am. A 16, 987-994 (1999)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-16-5-987

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