Method and apparatus for high resolution virtual reality systems using head tracked display
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United States of America Patent
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Aug 29, 1995
Issued Date -
N/A
app pub date -
Dec 6, 1994
filing date -
Apr 28, 1992
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for accurate head-tracked stereo display on a workstation CRT is disclosed that corrects inaccuracies caused by CRT optical properties. The correction includes modification of a viewing matrix equation to adjust the physical coordinates of a display window. An alternative correction models the CRT surface as multiple flat 'patches' positioned and titled to approximate the spherical or cylindrical shape of the actual screen, and each patch is rendered separately with a patch-specific viewing matrix. Another alternative correction uses angle of view information obtained directly with eye tracking, or indirectly through a 'hot spot' determination to bias correction at the point of viewing.
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