Image generation using three z-buffers

Details Image generation using three z-buffers Image generation using three z-buffers

1997-05-14

1999-09-14

Powell, Mark R.

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

345430, G06T 1540

Patent

active

059530146

ABSTRACT:
A post-processing method and apparatus are described whereby a second image is formed by horizontally shifting pixel primitives of a first image by an amount determined by their respective depths to give a parallax shift. To avoid gaps appearing in the shifted image, two z-buffers are maintained during rendering of the first image with the second being loaded by discarded values of the first such as to provide a record of the first occluded primitive for each pixel. The horizontal shift is applied to the contents of both z-buffers and the results written to a third z-buffer such that gaps due to the varied shift applied to the first image values (the unshifted contents of the first buffer are filled by previously occluded values from the second buffer. The two images may then be output to a suitable stereoscopic display such as a Virtual Reality headset.

REFERENCES:
patent: 4962422 (1990-10-01), Ohtomo et al.
patent: 5379369 (1995-01-01), Komma et al.
patent: 5504845 (1996-04-01), Vecchione
"Computer Graphics: Principles & Pratice", J.D. Foley et al, 2nd Ed. Pub. Additon-Wesley 1990, ISBN 201-12110-7 pp. 668-672 and 915-917.
"Pyramidal Parametrics" Lance Williams, Computer Graphics, vol. 17, No. 3 (Jul. 1983) pp. 1-11, Background to texture mapping.
"Summed-Area Tables for Texture Mapping" F.C. Crow, Computer Graphics, vol. 18, No. 3, (Jul. 1984) pp. 207-212: Background to Texture Mapping.
"Survey of Texture Mapping" Paul S. Heckbert, IEEE CG&A Nov. 1986, pp. 56-67: Background to Texture Mapping.

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