The present invention provides a scheme for compressing and decompressing the depth, or Z, components of image data. Image data is grouped into a plurality of tiles. A test is performed to determine if a tile can be compressed so that its size after compression is less than its size before compression....http://www.google.fr/patents/US7944441?utm_source=gb-gplus-shareBrevet US7944441 - Compression and decompression of data using plane equations
Compression and decompression of data using plane equations