1. Method for encoding a digital image signal represented by a set of digital samples, at least part of the digital image signal being encoded by reference to a reference digital image signal, the method comprising applying a segmentor to said reference digital image signal to obtain subsets of digital samples and applying a same filter among a set of predetermined filters to each sample of a said subset of digital samples, characterized in that it comprises the following steps: selecting a subset of segmentors from a predetermined set of segmentors based upon at least one characteristic obtained from said reference digital image signal, and determining one segmentor among said selected subset of segmentors to apply to said reference digital image signal.