Method for coding and reconstructing a pixel block and corresponding devices

摘要

The invention relates to a method for coding a block of pixels comprising the following steps:
- determine (10) a prediction block for the pixel block from a motion vector;
- calculate (12) a residue between the pixel block and the prediction block; and
- code (14) the residue The determination of the prediction block comprises the following steps:
- determine (110) an intermediate prediction block of size strictly greater than the size of the pixel block;
- transform (120) the intermediate prediction block into a first block transformed with a first transform; and
- transform (130) the first transformed block into a second block transformed with a second transform inverse of the first transform whose basis functions are shifted by at least a part of each component of the motion vector, the prediction block being extracted (140) from the second transformed block.