Method for processing a digital file notably of the image,...

H - Electricity – 04 – N

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H04N 7/34 (2006.01)

Patent

CA 2756884

A method for processing a digital file of the images, video and/or audio type which comprises 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 using algorithm in which each compressed value VC n of position N is obtained by subtracting from the value Vn of same position N of the original file, a predetermined number of successive compressed values (VC n-1, VC n-2,...) calculated previously, and a restoration phase using an algorithm in which each restored value VDn of position N is obtained by adding to the value VC n,of the same posi-tion of the compressed file, a predetermined number of successive compressed values (VC n-1, VC n-2,... ).

L'invention concerne un traitement de fichier numérique d'images de type vidéo et/ou audio, qui comprend une phase destinée à mettre en ligne par couche de couleur et/ou par canal audio des données numériques d'un fichier quelconque d'images de type vidéo et/ou audio, une phase de compression utilisant un algorithme dans lequel chaque valeur compressée VCn de position N est obtenue par soustraction de la valeur Vn de la même position N du fichier original, un nombre prédéterminé de valeurs compressées successives (VCn-1, VCn- 2,...) étant calculé au préalable, et une phase de restauration utilisant un algorithme dans lequel chaque valeur restaurée VDn de position N est obtenue par addition à la valeur VCn de la même position du fichier compressé à un nombre prédéterminé de valeurs compressées successives (VCn-1, VCn-2,... ).

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