Method and apparatus for performing fixed blocksize...

Details Method and apparatus for performing fixed blocksize... Method and apparatus for performing fixed blocksize...

2007-01-30

2007-01-30

Alavi, Amir (Department: 2624)

Image analysis

Image compression or coding

Including details of decompression

C382S165000

Reexamination Certificate

active

10464618

ABSTRACT:
Method and apparatus for providing texture and/or alpha compression. In one embodiment, the present invention incorporates stored palettes, e.g., a luminance palette and a chrominance palette such that, compressed texture data pertaining to a fixed blocksize is decoded and applied to the stored palettes to extract the texel data. In a second embodiment, the present method uses a plane to estimate the alpha value at each of the texels, and a three-bit correction factor to adjust the estimate to produce a final alpha value.

REFERENCES:
patent: 6339428 (2002-01-01), Fowler et al.
patent: 6424342 (2002-07-01), Perlman et al.
patent: 6819793 (2004-11-01), Reshetov et al.
patent: 6956965 (2005-10-01), Cuijpers
patent: 6959110 (2005-10-01), Danskin et al.

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