A method for encoding images using the classes of...

H - Electricity – 04 – N

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H04N 7/34 (2006.01) G06T 9/00 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2397090

The invention relates to a method for encoding a digital image, in which method the digital image is divided into blocks (C, L, U, UL, UR). In the method a spatial prediction for a block (C) is performed to reduce the amount of information to be transmitted, wherein at least one prediction method (P1-P13) is defined. In the method a classification is determined for at least one neighbouring block (L, U) of said block (C) to be predicted according to the contents of said neighbouring block (L, U), and a prediction method (P1-P13) is selected for the current block (C) on the basis of at least one said classification.

L'invention concerne un procédé de codage d'une image numérique, dans lequel l'image numérique est divisée en blocs (C, L, U, UL, UR). Dans ce procédé, une prédiction spatiale pour un bloc (C) est réalisée afin de réduire la quantité d'informations à émettre, au moins un procédé de prédiction (P1-P13) étant défini. Dans le procédé, une classification est déterminée pour au moins un des blocs voisins (L, U) du bloc (C) afin qu'il soit prédit selon le contenu du bloc voisins (L, U), et un procédé de prédiction (P1-P13) est sélectionné pour le bloc (C) sur la base d'au moins une desdites classifications.

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