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Proceedings Paper

Head tracking for viewpoint control in stereographic displays
Author(s): Roger A. Browse; James C. Rodger; Sarah Pakowski; Jennifer M. Davis
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Paper Abstract

Future computer interfaces will likely use 3D displays with stereographic viewing to take advantage of the increased information inherent in 3D. The appropriate roles of devices to manipulate 3D displays, including the mouse, joystick and head tracking remain unresolved. Our research centers on the use of head tracking for the control of perspective. For monoscopic viewing, we previously found that viewers can control displays effectively with head movements. They learn rapidly to use head movements, though scene adjustments amplify or even reverse natural perspective changes, and this ability persist over time. With stereo viewing, if head movements do ont produce the expected change in perspective, the viewer may be confused, reducing the effectiveness of head tracking. We tested these conjectures in the experiment reported here, establishing the extent to which the flexibility found under monoscopic viewing extends to stereo. As in previous experiments, the viewer makes head movements to see a target sphere through a ring positioned in virtual space between the viewer and the target. We used a variety of ring sizes and position to measure the speed and directness of movement under four conditions that varied the scene location in depth, plus the extent and direction of perspective change. These combinations permit us to evaluate the effects of direction and extent of scene adjustment on viewers' ability to use head movements to alter virtual viewpoint. While we found no difference for reversed adjustments under monoscopic viewing, these conditions appear more difficult in stereo viewing. Furthermore, viewers perform better when perspective changes are amplified.

Paper Details

Date Published: 24 May 1999
PDF: 7 pages
Proc. SPIE 3639, Stereoscopic Displays and Virtual Reality Systems VI, (24 May 1999); doi: 10.1117/12.349401
Show Author Affiliations
Roger A. Browse, Queen's Univ. (Canada)
James C. Rodger, Queen's Univ. (Canada)
Sarah Pakowski, Queen's Univ. (Canada)
Jennifer M. Davis, Queen's Univ. (Canada)

Published in SPIE Proceedings Vol. 3639:
Stereoscopic Displays and Virtual Reality Systems VI
Mark T. Bolas; John O. Merritt; Scott S. Fisher; Mark T. Bolas; Scott S. Fisher, Editor(s)

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