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Study of depth bias of observers in free viewing of still stereoscopic synthetic stimuli
Univ Nantes, LUNAM Univ, CNRS, IRCCyN,UMR 6597, Nantes, France.
Univ Nantes, LUNAM Univ, CNRS, IRCCyN,UMR 6597, Nantes, France.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
Univ Nantes, LUNAM Univ, CNRS, IRCCyN,UMR 6597, Nantes, France.
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2012 (English)In: JOURNAL OF EYE MOVEMENT RESEARCH, ISSN 1995-8692, Vol. 5, no 5, p. Art. no. 1-Article in journal (Refereed) Published
Abstract [en]

Observers' fixations exhibit a marked bias towards certain areas on the screen when viewing scenes on computer monitors. For instance, there exists a well-known "center-bias" which means that fixations are biased towards the center of the screen during the viewing of 2D still images. In the viewing of 3D content, stereoscopic displays enhance depth perception by the mean of binocular parallax. This additional depth cue has a great influence on guiding eye movements. Relatively little is known about the impact of binocular parallax on visual attention of the 3D content displayed on stereoscopic screen. Several studies mentioned that people tend to look preferably at the objects located at certain positions in depth. But studies proving or quantifying this depth-bias are still limited. In this paper, we conducted a binocular eye-tracking experiment by showing synthetic stimuli on a stereoscopic display. Observers were required to do a free-viewing task through passive polarized glasses. Gaze positions of both eyes were recorded and the depth of eyes' fixation was determined. The stimuli used in the experiment were designed in such a way that the center-bias and the depth-bias affect eye movements individually. Results indicate the existence of a depth-bias: objects closer to the viewer attract attention earlier than distant objects, and the number of fixations located on objects varies as a function of objects' depth. The closest object in a scene always attracts most fixations. The fixation distribution along depth also shows a convergent behavior as the viewing time increases.

Place, publisher, year, edition, pages
2012. Vol. 5, no 5, p. Art. no. 1-
Keywords [en]
Visual attention, 3DTV, stereoscopy, eye-tracking, depth bias
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:miun:diva-20992ISI: 000328117700001Scopus ID: 2-s2.0-84875848043OAI: oai:DiVA.org:miun-20992DiVA, id: diva2:687548
Available from: 2014-01-14 Created: 2014-01-09 Last updated: 2015-03-17Bibliographically approved

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Tourancheau, Sylvain

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