Method and apparatus for high resolution virtual reality systems

Details Method and apparatus for high resolution virtual reality systems Method and apparatus for high resolution virtual reality systems

1994-12-06

1995-08-29

Herndon, Heather R.

395119, 395155, G06T 1740

Patent

active

054468345

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.

REFERENCES:
patent: 4028725 (1977-06-01), Lewis
patent: 5231673 (1993-07-01), Elenga
patent: 5367614 (1994-11-01), Bisey
Robinet and Rollin, "A Computational Model for the Stereoscopic Optics of a Headmounted Display," Computer Science Department,_University of North Carolina, Winter of 1992, p. 45.

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