27 November 2002 Visual comfort and apparent depth in 3D systems: effects of camera convergence distance
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Proceedings Volume 4864, Three-Dimensional TV, Video, and Display; (2002) https://doi.org/10.1117/12.454900
Event: ITCom 2002: The Convergence of Information Technologies and Communications, 2002, Boston, MA, United States
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.
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Filippo Speranza, Filippo Speranza, Lew B. Stelmach, Lew B. Stelmach, Wa James Tam, Wa James Tam, Ryan Glabb, Ryan Glabb, } "Visual comfort and apparent depth in 3D systems: effects of camera convergence distance", Proc. SPIE 4864, Three-Dimensional TV, Video, and Display, (27 November 2002); doi: 10.1117/12.454900; https://doi.org/10.1117/12.454900
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