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1. WO2020089823 - OVERLAPPED BLOCK MOTION COMPENSATION WITH ADAPTIVE SUB-BLOCK SIZE

Publication Number WO/2020/089823
Publication Date 07.05.2020
International Application No. PCT/IB2019/059341
International Filing Date 31.10.2019
IPC
H04N 19/583 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
503involving temporal prediction
51Motion estimation or motion compensation
583Motion compensation with overlapping blocks
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 19/176 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
17the unit being an image region, e.g. an object
176the region being a block, e.g. a macroblock
CPC
H04N 19/105
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 19/176
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 19/583
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
503involving temporal prediction
51Motion estimation or motion compensation
583Motion compensation with overlapping blocks
Applicants
  • BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD. [CN]/[CN]
  • BYTEDANCE INC. [US]/[US]
Inventors
  • LIU, Hongbin
  • ZHANG, Li
  • ZHANG, Kai
  • WANG, Yue
Agents
  • LIU, SHEN & ASSOCIATES
Priority Data
PCT/CN2018/11294831.10.2018CN
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) OVERLAPPED BLOCK MOTION COMPENSATION WITH ADAPTIVE SUB-BLOCK SIZE
(FR) COMPENSATION DE MOUVEMENT DE BLOCS SUPERPOSÉS AU MOYEN D'UNE TAILLE DE SOUS-BLOC ADAPTATIVE
Abstract
(EN)
The present disclosure relates to improvement on overlapped block motion compensation.A method for video processing comprises: determining, during a conversion between a current block and a bitstream representation of the current block, a motion vector for a first sub-block inside the current block; using overlapped block motion compensation (OBMC) mode to perform the conversion; wherein the OBMC mode uses intermediate prediction values of the first sub-block based on the motion vector of the first sub-block and prediction values of at least a second video unit that is neighboring the first sub-block to generate final prediction values for the first sub-block; wherein a sub-block size of the first sub-block is based on block size, block shape,motion information, or reference picture of the current block.
(FR)
La présente invention concerne l'amélioration d'une compensation de mouvement de blocs superposés. Un procédé de traitement vidéo consiste à : déterminer, pendant une conversion entre un bloc courant et une représentation de flux binaire du bloc courant, un vecteur de mouvement d'un premier sous-bloc à l'intérieur du bloc courant ; faire appel à un mode de compensation de mouvement de blocs superposés (OBMC) pour exécuter la conversion ; le mode d'OBMC faisant appel à des valeurs de prédiction intermédiaire du premier sous-bloc sur la base du vecteur de mouvement du premier sous-bloc et à des valeurs de prédiction d'au moins une seconde unité vidéo qui est voisine du premier sous-bloc pour générer des valeurs de prédiction finale du premier sous-bloc ; une taille de sous-bloc du premier sous-bloc étant basée sur des informations de taille de bloc, de forme de bloc, de mouvement, ou sur une image de référence du bloc courant.
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