Patent ID: 8429139

Claim:
A method for processing a digital file notably of the image, video and/or audio type, comprising a phase for putting into line per color layer and/or per audio channel, digital data of any audio, image and video file, a compression phase in which the values of said file are successively compressed by means of an algorithm in which each compressed value (VC N ) of row N is obtained by subtracting from the value V N of same row N of the original file, a predetermined number of successive compressed values (VC N-1 , VC N-2 , . . . ) calculated previously, and a restoration phase in which each of the values of the compressed file is brought back to a value close to the corresponding value of the original file by means of an algorithm in which each restored value (VD N ) of row N is obtained by adding to the value VC N , of same row of the compressed file, a predetermined number of successive restored values (VC N-1 , VC N-2 , . . . ).