Latency compensation by horizontal scanline selection for head-mounted displays

Jason Jerald; Andrew Fuller; Anselmo Lastra; Mary Whitton; Luv Kohli; Fred Brooks

doi:10.1117/12.710749

5 March 2007 Latency compensation by horizontal scanline selection for head- mounted displays

Jason Jerald, Andrew Fuller, Anselmo Lastra, Mary Whitton, Luv Kohli, Fred Brooks

Proceedings Volume 6490, Stereoscopic Displays and Virtual Reality Systems XIV; 64901Q (2007) https://doi.org/10.1117/12.710749
Event: Electronic Imaging 2007, 2007, San Jose, CA, United States

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.

Citation Download Citation

Jason Jerald, Andrew Fuller, Anselmo Lastra, Mary Whitton, Luv Kohli, and Fred Brooks "Latency compensation by horizontal scanline selection for head- mounted displays", Proc. SPIE 6490, Stereoscopic Displays and Virtual Reality Systems XIV, 64901Q (5 March 2007); https://doi.org/10.1117/12.710749

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