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1. WO2020112453 - ENTROPY CODING OPTIMIZATION

Publication Number WO/2020/112453
Publication Date 04.06.2020
International Application No. PCT/US2019/062349
International Filing Date 20.11.2019
IPC
H04N 19/13 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
13Adaptive entropy coding, e.g. adaptive variable length coding or context adaptive binary arithmetic coding
H04N 19/91 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
90using coding techniques not provided for in groups H04N19/10-H04N19/85103
91Entropy coding, e.g. variable length coding or arithmetic coding
CPC
H04N 19/13
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
13Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
H04N 19/91
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
90using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
91Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
Applicants
  • INTERDIGITAL VC HOLDINGS, INC. [US]/[US]
Inventors
  • GALPIN, Franck
  • POIRIER, Tangi
  • CHEN, Ya
Agents
  • DORINI, Brian J.
  • SHEDD, Robert D.
Priority Data
18306596.030.11.2018EP
19305008.504.01.2019EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ENTROPY CODING OPTIMIZATION
(FR) OPTIMISATION DE CODAGE ENTROPIQUE
Abstract
(EN)
At least a method and an apparatus are provided for efficiently encoding or decoding video. For example, with a first scan pass of a plurality of scan positions of a current block, one or more parameters representing one or more transform coefficient values are obtained using a first type of entropy coding or decoding. With a further scan pass of the plurality of scan positions of the current block, the one or more parameters representing the one or more transform coefficient values are obtained using a second type of entropy coding or decoding, wherein the first type is different than the second type. The current block is encoded or decoded based on the one or more parameters.
(FR)
L'invention concerne au moins un procédé et un appareil permettant de coder ou décoder efficacement une vidéo. Par exemple, avec un premier passage de balayage d'une pluralité de positions de balayage d'un bloc courant, un ou plusieurs paramètres représentant une ou plusieurs valeurs de coefficient de transformée sont obtenus à l'aide d'un premier type de codage ou de décodage entropique. Avec une autre passe de balayage de la pluralité de positions de balayage du bloc courant, le ou les paramètres représentant la ou les valeurs de coefficient de transformée sont obtenus à l'aide d'un second type de codage ou de décodage entropique, le premier type étant différent du second type. Le bloc courant est codé ou décodé sur la base du ou des paramètres.
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