REVERSIBLE METHOD FOR TRANSCRIBING A FILE ENCODED WITH A FIRST CODING INTO A FILE ENCODED WITH A SECOND CODING

摘要

The invention relates to a method for reversibly encoding an image, characterised in that it comprises: a step of extracting compression information (22) from a compressed image (6) in an original format; a step of at least partially decompressing (23-27) the compressed image (6) into an at least partially decompressed intermediate image; a step of re-encoding (30) said intermediate image into a re-encoded image (8); and a step of associating said re-encoded image (8) with the compression information (22), preferably in the same file (31).