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Proceedings Paper

Two factors in visual fatigue caused by stereoscopic HDTV images
Author(s): Sumio Yano; Masaki Emoto
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Paper Abstract

It is said that visual fatigue caused by watching stereoscopic images is due to the conflict between convergence eye movement and accommodation functions. We studied the degree of visual fatigue in subjects watching HDTV stereoscopic images. The HDTV stereoscopic images used as visual stimuli contained only absolute, with no relative, parallax. In the experiments, images were displayed behind or in front of the screen by a 120-Hz time-sequential method. The examination of visual fatigue was carried out with a five-grade subjective evaluation test and measurement of the accommodation response after watching for one hour. We found that when stereoscopic HDTV images were displayed within the corresponding range of depth of focus, and remained static in the depth direction, the degree of visual fatigue was almost the same as that induced by watching images displayed at the depth of the screen. However, when images were displayed outside the corresponding range of depth of focus, visual fatigue was clearly induced. Moreover, we found that even if images were displayed within the corresponding range of depth of focus, visual fatigue was induced if the images were moved in depth according to a step pulse function.

Paper Details

Date Published: 27 November 2002
PDF: 10 pages
Proc. SPIE 4864, Three-Dimensional TV, Video, and Display, (27 November 2002); doi: 10.1117/12.454902
Show Author Affiliations
Sumio Yano, ATR International Human Information Science Labs. (Japan)
Masaki Emoto, Japan Broadcasting Corp. Science & Technical Research Labs. (Japan)


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

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