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Proceedings Paper

Latency compensation by horizontal scanline selection for head- mounted displays
Author(s): Jason Jerald; Andrew Fuller; Anselmo Lastra; Mary Whitton; Luv Kohli; Fred Brooks
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Paper Abstract

A fundamental task of a virtual-environment system is to present images that change appropriately as the user's head moves. Latency produces registration error causing the scene to appear spatially unstable. To improve the spatial stability of the scene, we built a system that, immediately before scanout to a head-mounted raster display, selects a portion of each scanline from an image rendered at a wider display width. The pixel selection corrects for yaw head rotations and effectively reduces latency for yaw to the millisecond range. In informal evaluations, users consistently judged visual scenes more stable and reported no additional visual artifacts with horizontal scanline selection than the same system without. Scanline-selection hardware can be added to existing virtual-reality systems as an external device between the graphics card and the raster display.

Paper Details

Date Published: 5 March 2007
PDF: 11 pages
Proc. SPIE 6490, Stereoscopic Displays and Virtual Reality Systems XIV, 64901Q (5 March 2007); doi: 10.1117/12.710749
Show Author Affiliations
Jason Jerald, Univ. of North Carolina at Chapel Hill (United States)
Andrew Fuller, Univ. of North Carolina at Chapel Hill (United States)
Anselmo Lastra, Univ. of North Carolina at Chapel Hill (United States)
Mary Whitton, Univ. of North Carolina at Chapel Hill (United States)
Luv Kohli, Univ. of North Carolina at Chapel Hill (United States)
Fred Brooks, Univ. of North Carolina at Chapel Hill (United States)


Published in SPIE Proceedings Vol. 6490:
Stereoscopic Displays and Virtual Reality Systems XIV
Andrew J. Woods; Neil A. Dodgson; John O. Merritt; Nicolas S. Holliman; Mark T. Bolas; Ian E. McDowall, Editor(s)

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