Abstract de la publi numéro 12415

This paper proposes a complete compression and coding scheme for on- board satellite applications considering the main on-board constraints: low computa- tional power and easy bit-rate control. The proposed coding scheme improves the per- formance of the current CCSDS recommendation (Consultative Committee for Space Data Systems) for a low additional complexity. We consider post-transforms in the wavelet domain, select the best representation for each block of wavelet coecients, and encode it into an embedded bit stream. After applying a classical wavelet trans- form of the image, several concurrent representations of blocks of wavelet coecients are generated. The best representations are then selected according to a rate-distortion criterion. Finally, a speci c bit-plane encoder derived from the CCSDS recommenda- tion produces an embedded bit stream ensuring the easy rate control required. In this article, both the post-transforms and the best representation selection have been adapted to the low complexity constraint and the CCSDS coder has been modi ed to compress post-transformed representations.