Parameter selection in data compression and decompression

G - Physics – 06 – T

Patent

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G06T 9/00 (2006.01)

Patent

CA 2493757

Apparatus and method for selecting an appropriate parameter at decompression are disclosed. In particular, when adaptive block size discrete cosine transform compression is used to compress data, different combinations of sub- blocks can be generated. To decompress the different combinations of sub- blocks, the appropriate parameter is selected based on block size assignment information and the address of data in the data block.

L'invention concerne un appareil et un procédé permettant de sélectionner un paramètre approprié pendant la décompression. D'une manière plus spécifique, lorsqu'une compression basée sur la transformation en cosinus discrète adaptant la taille des blocs est utilisée pour comprimer des données, différentes combinaisons de sous-blocs peuvent être générées. Pour décomprimer ces différentes combinaisons de sous-blocs, le paramètre approprié est sélectionné en fonction d'informations d'attribution d'une taille de bloc et de l'adresse des données du bloc de données.

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