Method and device for encoding blocks of values

A device (26) for encoding a signal, comprising blocks of values, in order to obtain a bit-stream, the device comprising means (30) for representing a block as a sequence of bit planes, wherein the most significant bits of said values form a most significant bit plane, and the respective less significant bits of said values form respective less significant bit planes;

• and means for extracting information from said bit planes, wherein the device comprises means (31) for determining, for a bit plane, at least one parameter (RMAX/CMAX;SMAX) in accordance with a predetermined parameter definition, in such a way that said at least one parameter defines a partition of the bits in the bit plane, the partition including all set bits, means for transmitting the parameter to said bit-stream, and means (31, 33) for scanning and transmitting all bits in said partition of bits to said bit-stream.

A device (35) for decoding a bit-stream, corresponding to blocks of values, wherein each block is represented as a sequence of bit planes, the most significant bits of said values forming a most significant bit plane, and the respective less significant bits of said values forming respective less significant bit planes, and wherein the bit stream comprises information extracted from said bit planes, wherein the device comprises means (36, 37) for receiving from said bit-stream at least one parameter (RMAX/CMAX;SMAX), determined, in accordance with a predetermined parameter definition, in such a way that said at least one parameter defines a partition of the bits in the bit plane, the partition including all set bits, means (36, 37) for receiving all bits in said partition of bits, and means for reconstructing (37) said values on the basis of said at least one parameter and said received bits.

A bit-stream (34), corresponding to blocks of values, wherein each block is represented as a sequence of bit planes, the most significant bits of said values forming a most significant bit plane, and the respective less significant bits of said values forming respective less significant bit planes, and wherein the bit-stream comprises information extracted from said bit planes, wherein for a bit plane the bit-stream comprises at least one parameter (RMAX/CMAX;SMAX), determined in accordance with a predetermined parameter definition, in such a way that said at least one parameter defines a partition of the bits in the bit plane, the partition including all set bits, and all bits in said partition of bits.