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1. WO2020141123 - HISTORY-BASED INTRA MOST PROBABLE MODE DERIVATION

Publication Number WO/2020/141123
Publication Date 09.07.2020
International Application No. PCT/EP2019/086866
International Filing Date 20.12.2019
IPC
H04N 19/11 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
11among a plurality of spatial predictive coding modes
H04N 19/52 2014.1
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
513Processing of motion vectors
517by encoding
52by predictive encoding
H04N 19/593 2014.1
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
H04N 19/70 2014.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
70characterised by syntax aspects related to video coding, e.g. related to compression standards
CPC
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 19/52
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
513Processing of motion vectors
517by encoding
52by predictive encoding
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
H04N 19/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
70characterised by syntax aspects related to video coding, e.g. related to compression standards
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • ZHANG, Zhi
  • YU, Ruoyang
  • ANDERSSON, Kenneth
  • WENNERSTEN, Per
  • SJÖBERG, Rickard
  • STRÖM, Jacom
Agents
  • ERICSSON
Priority Data
62/787,34101.01.2019US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) HISTORY-BASED INTRA MOST PROBABLE MODE DERIVATION
(FR) DÉRIVATION DE MODE INTRA LE PLUS PROBABLE BASÉE SUR UN HISTORIQUE
Abstract
(EN) A decoder can receive an encoded video block that includes a sequence of pictures. Each of the pictures can include a luma value and a chroma value. The decoder can generate a most probable mode, MPM, set that includes a plurality of intra prediction modes that correspond to a history‐based analysis. The decoder can perform an intra prediction for samples to decode the pictures by selecting an intra prediction mode that includes a plurality of directional modes and a plurality of non‐directional modes. Generating the MPM set can include generating at least one mode in the MPM set from an intra mode buffer table that is configured to include intra prediction modes. The intra mode buffer table can include a first‐in‐ first‐out, FIFO, buffer that includes elements that correspond to a previously decoded video block.
(FR) Dans la présente invention, un décodeur peut recevoir un bloc vidéo codé qui comprend une séquence d'images. Chacune des images peut comprendre une valeur de luminance et une valeur de chrominance. Le décodeur peut générer un mode le plus probable, MPM, qui comprend une pluralité de modes de prédiction intra qui correspondent à une analyse basée sur l'historique. Le décodeur peut effectuer une intra-prédiction pour des échantillons afin de décoder les images par sélection d'un mode de prédiction intra qui comprend une pluralité de modes directionnels et une pluralité de modes non directionnels. La génération de l'ensemble MPM peut comprendre la génération d'au moins un mode dans l'ensemble MPM à partir d'une table tampon de mode intra qui est configurée pour comprendre des modes de prédiction intra. La table tampon de mode intra peut comprendre un tampon premier entré, premier sorti (FIFO), qui comprend des éléments qui correspondent à un bloc vidéo précédemment décodé.
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