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METHOD AND DEVICE FOR CODING AN IMAGE SEQUENCE IMPLEMENTING BLOCKS OF DIFFERENT SIZE, SIGNAL, DATA MEDIUM, DECODING METHOD AND DEVICE, AND COMPUTER PROGRAMS CORRESPONDING THERETO
METHOD AND DEVICE FOR CODING AN IMAGE SEQUENCE IMPLEMENTING BLOCKS OF DIFFERENT SIZE, SIGNAL, DATA MEDIUM, DECODING METHOD AND DEVICE, AND COMPUTER PROGRAMS CORRESPONDING THERETO
A method is provided for coding an image sequence, including splitting a current image into blocks of standard size, termed macroblocks. For at least one current macroblock of the current image, the method further includes: constructing at least one block of greater size than the current macroblock, termed a large block, which includes the current macroblock and at least one neighbor macroblock in the current image, taking account of characteristics of the current image; coding the large block, delivering base coding information, making it possible to reconstruct a base layer of said current image, and for at least one large block, determining enhancement information associated with at least one macroblock present in the large block.
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