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Proceedings Paper

Diagnosing perceptual distortion present in group stereoscopic viewing
Author(s): Melissa Burton; Brice Pollock; Jonathan W. Kelly; Stephen Gilbert; Eliot Winer; Julio de la Cruz
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Paper Abstract

Stereoscopic displays are an increasingly prevalent tool for experiencing virtual environments, and the inclusion of stereo has the potential to improve distance perception within the virtual environment. When multiple users simultaneously view the same stereoscopic display, only one user experiences the projectively correct view of the virtual environment, and all other users view the same stereoscopic images while standing at locations displaced from the center of projection (CoP). This study was designed to evaluate the perceptual distortions caused by displacement from the CoP when viewing virtual objects in the context of a virtual scene containing stereo depth cues. Judgments of angles were distorted after leftward and rightward displacement from the CoP. Judgments of object depth were distorted after forward and backward displacement from the CoP. However, perceptual distortions of angle and depth were smaller than predicted by a ray-intersection model based on stereo viewing geometry. Furthermore, perceptual distortions were asymmetric, leading to different patterns of distortion depending on the direction of displacement. This asymmetry also conflicts with the predictions of the ray-intersection model. The presence of monocular depth cues might account for departures from model predictions.

Paper Details

Date Published: 17 February 2012
PDF: 11 pages
Proc. SPIE 8291, Human Vision and Electronic Imaging XVII, 82910P (17 February 2012); doi: 10.1117/12.912184
Show Author Affiliations
Melissa Burton, Iowa State Univ. (United States)
Brice Pollock, Iowa State Univ. (United States)
Jonathan W. Kelly, Iowa State Univ. (United States)
Stephen Gilbert, Iowa State Univ. (United States)
Eliot Winer, Iowa State Univ. (United States)
Julio de la Cruz, U.S. Army RDECOM/STTC (United States)

Published in SPIE Proceedings Vol. 8291:
Human Vision and Electronic Imaging XVII
Bernice E. Rogowitz; Thrasyvoulos N. Pappas; Huib de Ridder, Editor(s)

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