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1. WO2018132710 - CODING VIDEO DATA USING DERIVED CHROMA MODE

Publication Number WO/2018/132710
Publication Date 19.07.2018
International Application No. PCT/US2018/013572
International Filing Date 12.01.2018
IPC
H04N 19/11 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
11among a plurality of spatial predictive coding modes
H04N 19/186 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
186the unit being a colour or a chrominance component
H04N 19/157 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
157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
CPC
H04N 19/103
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
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 19/136
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
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 19/186
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
186the unit being a colour or a chrominance component
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
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • ZHANG, Li
  • CHIEN, Wei-Jung
  • ZHAO, Xin
  • KARCZEWICZ, Marta
Agents
  • DAWLEY, Brian R.
Priority Data
15/868,82111.01.2018US
62/446,27013.01.2017US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CODING VIDEO DATA USING DERIVED CHROMA MODE
(FR) CODAGE DE DONNÉES VIDÉO À L'AIDE D'UN MODE DE CHROMINANCE DÉRIVÉ
Abstract
(EN)
An example device for decoding video data includes a memory for storing video data, and one or more processors implemented in circuitry and configured to construct an intra-prediction candidate list for a current chroma block of the video data indicating candidate intra-prediction modes for the current chroma block, wherein the intra-prediction candidate list indicates a subset of allowed luminance (luma) candidate intra-prediction modes, determine cost (e.g., sum of absolute transform difference (SATD)) values for each of the candidate intra-prediction modes in the intra-prediction candidate list for the current chroma block, and generate a prediction block for the current chroma block using one of the candidate intra-prediction modes indicated by the intra-prediction candidate list according to the cost values (e.g., the candidate intra-prediction mode having the lowest cost value).
(FR)
L'invention concerne un exemple de dispositif de décodage de données vidéo qui comprend une mémoire pour stocker des données vidéo, et un ou plusieurs processeurs implémentés dans des circuits et configurés afin de construire une liste de candidats de prédiction intra pour un bloc de chrominance actuel des données vidéo indiquant des modes de prédiction intra candidats pour le bloc de chrominance actuel, la liste de candidats de prédiction intra indiquant un sous-ensemble de modes de prédiction intra candidats de luminance (luma) autorisés, déterminer des valeurs de coût (par exemple, la somme des différences absolues transformées (SATD)) pour chacun des modes de prédiction intra candidats dans la liste de candidats de prédiction intra pour le bloc de chrominance actuel, et générer un bloc de prédiction pour le bloc de chrominance actuel à l'aide de l'un des modes de prédiction intra candidats indiqués par la liste de candidats de prédiction intra en fonction des valeurs de coût (par exemple, le mode de prédiction intra candidat ayant la valeur de coût la plus faible).
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