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Proceedings Paper

Visual comfort and apparent depth in 3D systems: effects of camera convergence distance
Author(s): Filippo Speranza; Lew B. Stelmach; Wa James Tam; Ryan Glabb
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Paper Abstract

We investigated the effect of convergence of stereoscopic cameras on visual comfort and apparent depth. In Experiment 1, viewers rated comfort and depth of three stereoscopic sequences acquired with convergence distance set at 60, 120, 180, 240 cm, or infinity (i.e., parallel). Moderately converged conditions were rated either as comfortable (i.e., 240 cm) or more comfortable (i.e., 120 and 180 cm) than the parallel condition. The 60 cm condition was rated the least comfortable. Camera convergence had no effects on ratings of apparent depth. In Experiment 2, we used computer-generated stereoscopic still images to investigate the effects of convergence in the absence of lens distortions. Results matched those obtained in Experiment 1. In Experiment 3, we artificially introduced keystone distortions in stereoscopic still images. We found that increasing the amount of keystone distortion caused only a minimal decrease in visual comfort and apparent depth.

Paper Details

Date Published: 27 November 2002
PDF: 11 pages
Proc. SPIE 4864, Three-Dimensional TV, Video, and Display, (27 November 2002); doi: 10.1117/12.454900
Show Author Affiliations
Filippo Speranza, Communications Research Ctr. Canada (Canada)
Lew B. Stelmach, Communications Research Ctr. Canada (Canada)
Wa James Tam, Communications Research Ctr. Canada (Canada)
Ryan Glabb, Communications Research Ctr. Canada (Canada)


Published in SPIE Proceedings Vol. 4864:
Three-Dimensional TV, Video, and Display
Bahram Javidi; Fumio Okano, Editor(s)

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