EP2777270

The invention relates to a method for encoding at least one image that has been cut up into partitions, said method implementing the steps of: predicting (C2) the data of a current partition on the basis of at least one already encoded and then decoded reference partition, generating a predicted partition; determining (C6) a set of residual data by comparing data relating to the current partition with the predicted partition, said residual data being associated with various digital data items, respectively, which are intended to undergo entropy encoding. Prior to the step for producing a signal containing said encoded information, the following steps are carried out: determining (C71), from said predetermined set of residual data, a subset containing residual data capable of being modified; calculating (C8) the value of a function representative of the residual data of said predetermined subset; comparing (C9) said calculated value with a value of at least one of said digital data items; on the basis of the result of said comparison, modification (C10) or non-modification of at least one of the residual data items of said subset; and, in the vent of a modification, entropy encoding (C20) said at least one modified residual data item.

From the international application WO2013068684