METHOD FOR ENCODING AND DECODING IMAGES, ENCODING AND DECODING DEVICES, AND CORRESPONDING DATA STREAM AND COMPUTER PROGRAM

摘要

The invention relates to a method for encoding an image sequence, including the following steps, for at least one group of blocks of an image: determining (21), for each block, at least one parameter characteristic of said block; forming at least one cluster including the blocks having at least one similar characteristic parameter; encoding (24) the blocks of said cluster, the similar characteristic parameter(s) associated with said cluster being encoded only once; encoding (23) the blocks that do not belong to any cluster, the characteristic parameter(s) associated with each of said blocks not being encoded. Such a method also includes the steps of generating (25) a data stream and inserting (26), into said stream, at least one piece of information on the partitioning of the group(s), in order to identify the outer block(s) within a group.