Predictive lossless coding of images and video

Details Predictive lossless coding of images and video Predictive lossless coding of images and video

H - Electricity

04

N

H04N 7/48 (2006.01) G06T 9/00 (2006.01) H04N 7/26 (2006.01) H04N 7/34 (2006.01) H04N 7/42 (2006.01)

Patent

CA 2504536

Predictive lossless coding provides effective lossless image compression of both photographic and graphics content in image and video media. Predictive lossless coding can operate on a macroblock basis for compatibility with existing image and video codecs. Predictive lossless coding chooses and applies one of multiple available differential pulse-code modulation (DPCM) modes to individual macro-blocks to produce DPCM residuals having a closer to optimal distribution for run-length, Golomb Rice RLGR entropy encoding. This permits effective lossless entropy encoding despite the differing characteristics of photographic and graphics image content.

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