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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 7 — Jul. 16, 2007

What do we perceive from motion pictures? A computational account

Loong-Fah Cheong and Xu Xiang  »View Author Affiliations


JOSA A, Vol. 24, Issue 6, pp. 1485-1500 (2007)
http://dx.doi.org/10.1364/JOSAA.24.001485


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Abstract

Cinema viewed from a location other than a canonical viewing point (CVP) presents distortions to the viewer in both its static and its dynamic aspects. Past works have investigated mainly the static aspect of this problem and attempted to explain why viewers still seem to perceive the scene very well. The dynamic aspect of depth perception, which is known as structure from motion, and its possible distortion, have not been well investigated. We derive the dynamic depth cues perceived by the viewer and use the so-called isodistortion framework to understand its distortion. The result is that viewers seated at a reasonably central position experience a shift in the intrinsic parameters of their visual systems. Despite this shift, the key properties of the perceived depths remain largely the same, being determined in the main by the accuracy to which extrinsic motion parameters can be recovered. For a viewer seated at a noncentral position and watching the movie screen at a slant angle, the view is related to the view at the CVP by a homography, resulting in various aberrations such as noncentral projection.

© 2007 Optical Society of America

OCIS Codes
(330.5510) Vision, color, and visual optics : Psychophysics
(330.7310) Vision, color, and visual optics : Vision

ToC Category:
Vision and Color

History
Original Manuscript: June 19, 2006
Revised Manuscript: December 20, 2006
Manuscript Accepted: December 22, 2006
Published: May 9, 2007

Virtual Issues
Vol. 2, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Loong-Fah Cheong and Xu Xiang, "What do we perceive from motion pictures? A computational account," J. Opt. Soc. Am. A 24, 1485-1500 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-24-6-1485

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