A video decoding method in which variable length code tables...

Details A video decoding method in which variable length code tables... A video decoding method in which variable length code tables...

G - Physics

06

T

G06T 9/00 (2006.01) H03M 7/40 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2444357

The method includes the following units: a coefficient number detecting unit (109) for detecting the number of coefficients which has a value other than 0 for each block according to the generated coefficient, a coefficient number storing unit (110) for storing the number of coefficients detected, a coefficient number coding unit (111) for selecting a table for variable length coding based on the numbers of coefficients in the coded blocks located on the periphery of a current block to be coded with reference to the selected table for variable length coding so as to perform variable length coding for the number of coefficients.

L'invention concerne un détecteur du nombre de coefficients (109) permettant de détecter le nombre de coefficients ayant une valeur autre que 0 pour chaque bloc de coefficients générés, une unité de mémorisation du nombre de coefficients (110) permettant de mémoriser le nombre de coefficients détecté, et un codeur de nombres de coefficients (111) permettant de sélectionner une table de codage de longueur variable conforme au nombre de coefficients du bloc codé placé à proximité du bloc à coder et permettant le codage de longueur variable au nombre de coefficients en référence à la table de codage de longueur variable ayant été sélectionnée.

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