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1. (WO2017187040) METHOD OF DECODING A DIGITAL IMAGE, METHOD OF CODING, DEVICES, AND COMPUTER PROGRAMS ASSOCIATED THEREWITH

Pub. No.:    WO/2017/187040    International Application No.:    PCT/FR2017/050817
Publication Date: Fri Nov 03 00:59:59 CET 2017 International Filing Date: Thu Apr 06 01:59:59 CEST 2017
IPC: H04N 19/122
H04N 19/176
H04N 19/147
H04N 19/625
Applicants: B<>COM
Inventors: PHILIPPE, Pierrick
LORCY, Victorien
CASTEL, Pierre
Title: METHOD OF DECODING A DIGITAL IMAGE, METHOD OF CODING, DEVICES, AND COMPUTER PROGRAMS ASSOCIATED THEREWITH
Abstract:
The invention relates to a method for decoding a digital image, on the basis of a binary train comprising coded data representative of said image, comprising the following steps, implemented for a block of said image, the so-called transformed current block: -Decoding of the coefficients of the transformed current block on the basis of coded data read in the binary train; -Transformation of the current block into a decoded block, said step implementing a first sub-step intended to produce an intermediate block, that applies to the column vectors respectively row vectors of the current block, the second intended to produce a block of pixels that applies to the row vectors respectively column vectors of the intermediate block, arising from the first sub-step; -Reconstruction of the image on the basis of the decoded block; Characterized in that: at least one of said first and second transformation sub-steps, comprises, for a said row vector respectively column vector, the said input vector: -the formation of at least one first sub-vector of size K