Method, system and software product for color image encoding

Details Method, system and software product for color image encoding Method, system and software product for color image encoding

G - Physics

06

T

G06T 9/00 (2006.01) G06T 9/40 (2006.01)

Patent

CA 2563122

The present invention relates to the compression of color image data. A combination of hard decision pixel mapping and soft decision pixel mapping is used to jointly address both quantization distortion and compression rate while maintaining low computational complexity and compatibility with standard decoders, such as, for example, the GIF/PNG decoder.

L'invention se rapporte à la compression des données image de couleur. Le procédé décrit combine le mappage des pixels par quantification ferme (hard decision) et de mappage des pixels par quantification pondérée (soft decision) ce qui permet de régler à la fois à la distorsion de quantification et le taux de compression, tout en maintenant un faible niveau de complexité algorithmique, et la compatibilité avec les décodeurs standard, tels que le décodeur GIF/PNG par exemple. .

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