1. Method of coding and/or decoding picture sequences, on the basis of a 3D wavelet processing, including a coding phase which comprises: a step for determining at least one information item for configuring the 3D wavelet coding as the selection of a reference picture for a sequence of successive pictures, on the basis of a predetermined optimizing criterion; then a step for generating a configuration information unit comprising the datum of the reference picture for the said sequence of pictures; and finally a step for executing the 3D wavelet coding on the basis of the said configuration information, in such a way as to produce a stream of coded data comprising the union for each sequence of pictures of a configuration information unit and/or of the 3D wavelet coding data for the pictures of the picture sequence.