METHOD FOR ENCODING A DIGITAL IMAGE, DECODING METHOD, DEVICES, AND ASSOCIATED COMPUTER PROGRAMMES

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United States of America Patent

SERIAL NO

15549298

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Abstract

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An encoding method encodes a digital image that is divided into a plurality of blocks of pixels processed in a defined order. The method includes: transforming the current block into a transformed block with coefficients, by implementing two successive transformation sub-steps, one to the current block and the other to an intermediate block, resulting from the first sub-step; and quantizing and encoding the coefficients of the transformed block. The transforming step further comprises, a preliminary sub-step of forming at least one first and one second distinct vector, in the block to be transformed, each vector comprising the pixels, respectively the coefficients of a sequence of pixels, respectively adjacent coefficients of the block to be transformed, of length equal to one of the sizes of the block to be transformed. The transformation sub-step also includes applying a first transform to the first vector and a second transform to the second vector.

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Patent Owner(s)

Patent OwnerAddress
ORANGE78 RUE OLIVIER DE SERRES PARIS 75015
B<>COM1219 AVENUE DES CHAMPS BLANCS CESSON SEVIGNE 35510

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Philippe, Pierrick Melesse, FR 26 219

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