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1. WO2020141984 - METHOD AND APPARATUS OF MODE- AND SIZE-DEPENDENT BLOCK-LEVEL RESTRICTIONS FOR POSITION DEPENDENT PREDICTION COMBINATION

Publication Number WO/2020/141984
Publication Date 09.07.2020
International Application No. PCT/RU2019/050256
International Filing Date 24.12.2019
IPC
H04N 19/103 2014.1
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
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 19/11
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 19/159
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
159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
H04N 19/167
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
167Position within a video image, e.g. region of interest [ROI]
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
Applicants
  • HUAWEI TECHNOLOGIES CO., LTD. [CN]/[CN]
  • FILIPPOV, Alexey Konstantinovich [RU]/[CN] (RU)
Inventors
  • FILIPPOV, Alexey Konstantinovich
  • RUFITSKIY, Vasily Alexeevich
  • CHEN, Jianle
Agents
  • LAW FIRM "GORODISSKY & PARTNERS" LTD.
Priority Data
62/786,55131.12.2018US
62/787,37401.01.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS OF MODE- AND SIZE-DEPENDENT BLOCK-LEVEL RESTRICTIONS FOR POSITION DEPENDENT PREDICTION COMBINATION
(FR) PROCÉDÉ ET APPAREIL DE RESTRICTIONS DE NIVEAU DE BLOC DÉPENDANT DU MODE ET DE LA TAILLE POUR UNE COMBINAISON DE PRÉDICTION DÉPENDANT DE LA POSITION
Abstract
(EN)
It is provided an intra prediction method, comprising: determining a prediction value for a sample of a current block from one or more reference samples outside the current block by using an intra predication mode; deriving a weighted prediction value, when one or more predefined conditions are not satisfied, wherein the one or more predefined conditions relate to at least one of a width and/or a height of the current block and the intra prediction mode; and coding the current block using the weighted prediction value, when the one or more predefined conditions are not satisfied.
(FR)
L'invention concerne un procédé de prédiction intra, comprenant les étapes consistant à : déterminer une valeur de prédiction pour un échantillon d'un bloc actuel, à partir d'au moins un échantillon de référence à l'extérieur du bloc actuel, en utilisant un mode de prédiction intra ; dériver une valeur de prédiction pondérée, lorsqu'au moins une condition prédéfinie n'est pas rencontrée, l'au moins une condition prédéfinie se rapportant à une largeur et/ou à une hauteur du bloc actuel et au mode de prédiction intra ; et coder le bloc actuel à l'aide de la valeur de prédiction pondérée, lorsque l'au moins une condition prédéfinie n'est pas rencontrée.
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