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1. WO2021011555 - METHOD AND APPARATUS FOR VIDEO CODING

Publication Number WO/2021/011555
Publication Date 21.01.2021
International Application No. PCT/US2020/041965
International Filing Date 14.07.2020
IPC
H04N 19/139 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
134characterised by the element, parameter or criterion affecting or controlling the adaptive coding
136Incoming video signal characteristics or properties
137Motion inside a coding unit, e.g. average field, frame or block difference
139Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
H04N 19/184 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
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
184the unit being bits, e.g. of the compressed video stream
CPC
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 19/44
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
44Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
H04N 19/96
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
96Tree coding, e.g. quad-tree coding
Applicants
  • TENCENT AMERICA LLC [US]/[US]
Inventors
  • XU, Xiaozhong
  • LIU, Shan
Agents
  • MA, Johnny
  • MASON, J. Derek
Priority Data
16/927,20013.07.2020US
62/875,32717.07.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR VIDEO CODING
(FR) PROCÉDÉ ET APPAREIL DE CODAGE VIDÉO
Abstract
(EN)
Aspects of the disclosure provide an apparatus that includes processing circuitry. The processing circuitry decodes coding information of a current coding tree block (CTB) from a coded video bitstream. The coding information indicates whether a current block split structure of the current CTB is based on reference partitioning information. In response to the current block split structure of the current CTB being based on the reference partitioning information, the processing circuitry determines the current block split structure for the current CTB based on an initial block split structure indicated in the reference partitioning information. The initial block split structure is (i) of a previously decoded CTB decoded prior to the current CTB in a decoding order or (ii) indicated by a high level header at a level higher than a CTB level. The processing circuitry partitions the current CTB according to the current block split structure.
(FR)
Des aspects de la présente invention concernent un appareil comportant un circuit de traitement. Le circuit de traitement décode les informations de codage d'un bloc d'arbre de codage (CTB) courant à partir d'un flux binaire vidéo codé. Les informations de codage indiquent si une structure de division en blocs du CTB courant est basée sur des informations de partitionnement de référence. En réponse au fait que la structure de division en blocs actuelle du CTB courant est basée sur les informations de partitionnement de référence, le circuit de traitement détermine la structure de division en blocs actuelle pour le CTB courant sur la base d'une structure de division en blocs initiale indiquée dans les informations de partitionnement de référence. La structure initiale de division en blocs est (i) celle d'un CTB décodé avant le CTB courant dans un ordre de décodage ou (ii) indiquée par un en-tête de haut niveau à un niveau supérieur à celui du CTB. Le circuit de traitement divise le CTB courant en fonction de la structure de division du bloc courant.
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