Device, method and program for image prediction encoding,...

H - Electricity – 04 – N

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H04N 7/32 (2006.01)

Patent

CA 2750552

A device for image prediction encoding is provided with a region dividing means for dividing an input image into a plurality of blocks, a prediction signal generating means for generating a prediction signal to a pixel signal included in a block to be processed among the plurality of blocks, a residual signal generating means for generating the residual signal between the pixel signal of the block to be processed and the prediction signal, a signal encoding means for generating a compressed signal by encoding the residual signal, and a storage means for decompressing the compressed signal and storing the decompressed signal as the reproduced pixel signal, wherein the prediction signal generating means sub-divides the block to be processed into a plurality of sub-regions, at least one of which has a non-square shape, the length of a first side of the non-square shaped sub-region being longer than the length of a second side different from the length of the first side.

L'invention concerne un dispositif pour le codage de prévision d'image doté d'un moyen de division de régions pour diviser une image d'entrée en une pluralité de blocs, un moyen de génération de signaux de prévision pour générer un signal de prévision sur un signal de pixel contenu dans un bloc à traiter parmi la pluralité de blocs, un moyen de génération de signaux résiduels pour générer le signal résiduel entre le signal de pixel du bloc à traiter et le signal de prévision, un moyen de codage de signaux pour générer un signal compressé par le codage du signal résiduel, et un moyen de stockage pour décompresser le signal compressé et stocker le signal décompressé en tant que signal de pixel reproduit, le moyen de génération de signaux de prévision subdivisant le bloc à traiter en une pluralité de sous-régions, dont au moins une a une forme non carrée, la longueur d'un premier côté de la sous-région de forme non carrée étant supérieure à la longueur d'un second côté différent de la longueur du premier côté.

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