1. A coding method comprising: coding, by a coding device, at least one image of a sequence of images, including grouping pixels of the at least one image into a plurality of blocks and generating a data stream that includes data representative of said blocks, wherein coding comprises: grouping at least some of the plurality of blocks in a cluster of blocks according to proximity of their respective values corresponding to at least one block parameter to be coded; determining a value characteristic of said cluster of blocks as a function of a respective value corresponding to the at least one block parameter to be coded of at least one block of said cluster of blocks; coding each of the blocks of said cluster, where the values of said blocks for said block parameter are coded implicitly by inheritance of said characteristic value or are coded as refinements relative to said characteristic value; and coding a data structure associated with said cluster of blocks, said data structure including data associated with said characteristic value.