Patent ID: 7440625

Claim:
A method for decoding-decompressing digital data thus providing at least one decoded-decompressed digital image corresponding to a respective initial image, the method comprising the steps of: receiving a digital data sequence obtained from a compression-encoding processing of the initial image; processing the digital data sequence for obtaining a plurality of dequantized blocks, each dequantized block comprising digital values corresponding to dequantized coefficients of a transform in a bidimensional spatial frequencies domain of a respective pixel block of the initial image; selecting at least one first dequantized block comprising at least one of said digital values outside a first preset range of digital values, and discarding said first selected block and providing in the decoded-decompressed image a respective pixel block comprising replacement information; wherein said step of processing the digital data sequence in order to obtain the plurality of dequantized blocks includes an entropic decoding step and a subsequent inverse quantization step, the entropic decoding step including a variable length decoding operation; and wherein said entropic decoding step further includes a fixed length decoding operation and in which part of the digital values of said dequantized blocks are obtained from the variable length decoding operation and part thereof are obtained from the fixed length decoding operation.