Coding distortion removal method, video encoding method,...

Details Coding distortion removal method, video encoding method,... Coding distortion removal method, video encoding method,...

H - Electricity

04

N

H04N 7/26 (2006.01) G06T 9/00 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2433455

When a compressed video signal is reproduced, a mosaic-shaped block noise is generated. This block noise is removed. However, if block noise is removed by the deblock filter from all the blocks, the load on the deblock filter becomes too large. This load can be reduced by performing block filtering only when it is decided that the coding distortion removal is required.

Selon l'invention, lorsqu'un signal vidéo compressé est lu, un bruit de bloc en forme de mosaïque apparaît. Ce bruit de bloc est éliminé. Toutefois, l'élimination du bruit de bloc de tous les blocs, à l'aide d'un filtre de dégroupage, constitue une charge trop importante pour le filtre de dégroupage. Pour réduire cette charge, il suffit de déterminer s'il est nécessaire d'éliminer la distorsion de codage et d'utiliser un filtre de dégroupage selon les besoins.

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