Method of coding and of brief of a signal which is mounted on a variety of dimension n, coding device and of brief of such a signal and computer programs corresponding

摘要

The present invention relates to the coding of a signal (f) is defined on a variety of dimension n (n ≧ 1), comprising the steps consisting in: - represent (c1) said variety with the aid of a series of a mesh m0, m1, .. M i - 1, m 1, m + 1,.., ms (0 ≦ i ≦ s), respectively formed by a plurality of of dimension n, a grid current in question, mi, constituting a subdivision of the immediately preceding mesh m 1 - 1, - apply (c3) a wavelet transformation to each subdivision, delivering a set of wavelet coefficients d0, d1,.., ds - 1, - (c5) encoding the wavelet coefficients delivered, said coding method being characterized in that said step of the representation is implemented in the following manner: - in the case where i is even, the subdivision of the grid pattern mi to obtain the mesh m + 1 is carried out according to a first predetermined rule of subdivision, - in the case where i is odd, the subdivision of the grid pattern mi to obtain the mesh m + 1 is carried out according to a second predetermined rule of subdivision.