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1. WO2020094703 - METHOD AND DEVICE FOR CODING AND DECODING AN IMAGE BY BLOCK CUTTING INTO ZONES

Publication Number WO/2020/094703
Publication Date 14.05.2020
International Application No. PCT/EP2019/080369
International Filing Date 06.11.2019
IPC
H04N 19/593 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
593involving spatial prediction techniques
H04N 19/105 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
103Selection of coding mode or of prediction mode
105Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
H04N 19/436 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
42characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
436using parallelised computational arrangements
CPC
H04N 19/11
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
102characterised by the element, parameter or selection affected or controlled by the adaptive coding
103Selection of coding mode or of prediction mode
11among a plurality of spatial predictive coding modes
H04N 19/157
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
H04N 19/176
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
17the unit being an image region, e.g. an object
176the region being a block, e.g. a macroblock
H04N 19/182
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
10using adaptive coding
169characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
182the unit being a pixel
H04N 19/593
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
593involving spatial prediction techniques
Applicants
  • FONDATION B-COM [FR]/[FR]
Inventors
  • HENRY, Félix
  • CLARE, Gordon
  • PHILIPPE, Pierrick
Agents
  • VIDON BREVETS & STRATÉGIE
Priority Data
186036009.11.2018FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) METHOD AND DEVICE FOR CODING AND DECODING AN IMAGE BY BLOCK CUTTING INTO ZONES
(FR) PROCÉDÉ ET DISPLOSITIF DE CODAGE ET DE DÉCODAGE D'UNE IMAGE PAR DÉCOUPAGE DE BLOC EN ZONES
Abstract
(EN)
The invention relates to a method for coding or decoding at least one image, an image being cut up into blocks of elements, said method comprising, for at least one block: - the cutting (E1) of the block into at least two zones; - the processing (E2) of at least one said zone, comprising the scanning of the elements of the zone according to a predetermined order of scanning, and for at least one scanned element, termed current element: o selection (E21) of at least one predictor element previously coded or decoded according to a prediction function; o prediction (E25) of the current element: - on the basis of the at least one predictor element, if the at least one neighbouring predictor element belongs to said zone; - on the basis of at least one replacement value, otherwise.
(FR)
L'invention concerne un procédé de codage ou de décodage d'au moins une image, une image étant découpée en blocs d'éléments, ledit procédé comprenant, pour au moins un bloc: - le découpage (E1) du bloc en au moins deux zones; - le traitement (E2) d'au moins une dite zone, comprenant le parcours des éléments de la zone selon un ordre de parcours prédéterminé, et pour au moins un élément parcouru, dit élément courant : o sélection (E21) d'au moins un élément prédicteur précédemment codé ou décodé selon une fonction de prédiction; o prédiction (E25) de l'élément courant : - à partir du au moins un élément prédicteur, si l'au moins un élément prédicteur voisin appartient à ladite zone; - à partir d'au moins une valeur de remplacement, sinon.
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