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Proceedings Paper

Depth reversals in stereoscopic displays driven by apparent size
Author(s): Gunnar Sacher; Amy Hayes; Ian M. Thornton; Margaret E. Sereno; Allen D. Malony
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Paper Abstract

In visual scenes, depth information is derived from a variety of monocular and binocular cues. When in conflict, a monocular cue is sometimes able to override the binocular information. We examined the accuracy of relative depth judgments in orthographic, stereoscopic displays and found that perceived relative size can override binocular disparity as a depth cue in a situation where the relative size information is itself generated from disparity information, not from retinal size difference. A size discrimination task confirmed the assumption that disparity information was perceived and used to generate apparent size differences. The tendency for the apparent size cue to override disparity information can be modulated by varying the strength of the apparent size cue. In addition, an analysis of reaction times provides supporting evidence for this novel depth reversal effect. We believe that human perception must be regarded as an important component of stereoscopic applications. Hence, if applications are to be effective and accurate, it is necessary to take into account the richness and complexity of the human visual perceptual system that interacts with them. We discuss implications of this and similar research for human performance in virtual environments, the design of visual presentations for virtual worlds, and the design of visualization tools.

Paper Details

Date Published: 30 April 1998
PDF: 11 pages
Proc. SPIE 3295, Stereoscopic Displays and Virtual Reality Systems V, (30 April 1998); doi: 10.1117/12.307170
Show Author Affiliations
Gunnar Sacher, Univ. of Oregon (United States)
Amy Hayes, Univ. of Oregon (United States)
Ian M. Thornton, Univ. of Oregon (United States)
Margaret E. Sereno, Univ. of Oregon (United States)
Allen D. Malony, Univ. of Oregon (United States)


Published in SPIE Proceedings Vol. 3295:
Stereoscopic Displays and Virtual Reality Systems V
Mark T. Bolas; Mark T. Bolas; Scott S. Fisher; Scott S. Fisher; John O. Merritt, Editor(s)

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