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1. WO2020139006 - METHOD AND APPARATUS FOR DERIVING INTRA-PREDICTION MODE

Publication Number WO/2020/139006
Publication Date 02.07.2020
International Application No. PCT/KR2019/018576
International Filing Date 27.12.2019
IPC
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 19/11 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 19/105 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
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 19/132 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
132Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
H04N 19/186 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
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 19/176 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
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 19/109
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
109among a plurality of temporal predictive coding modes
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 19/119
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
119Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
H04N 19/132
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
132Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
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
Applicants
  • 한국전자통신연구원 ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE [KR]/[KR]
Inventors
  • 이진호 LEE, Jin Ho
  • 강정원 KANG, Jung Won
  • 이하현 LEE, Ha Hyun
  • 임성창 LIM, Sung Chang
  • 김휘용 KIM, Hui Yong
Agents
  • 성병기 SUNG, Byung Kee
Priority Data
10-2018-017270528.12.2018KR
10-2019-000032002.01.2019KR
10-2019-001446307.02.2019KR
10-2019-003332825.03.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD AND APPARATUS FOR DERIVING INTRA-PREDICTION MODE
(FR) PROCÉDÉ ET APPAREIL POUR DÉDUCTION DE MODE D'INTRA-PRÉDICTION
(KO) 화면 내 예측 모드 유도 방법 및 장치
Abstract
(EN)
Provided is an image encoding/decoding method and apparatus. The image decoding method according to the present invention comprises the steps of: deriving an intra-prediction mode of a current block by using an intra-prediction mode of a neighboring block adjacent to the current block; configuring a reference sample for the current block; and performing intra-prediction on the current block by using the intra-prediction mode and the reference sample, wherein the step of deriving the intra-prediction mode of the current block comprises a step of configuring an MPM list on the basis of whether the intra-prediction mode of the current block is a planar mode.
(FR)
L'invention concerne un procédé et un appareil de codage/décodage d'image. Le procédé de décodage d'image selon la présente invention comprend les étapes consistant à : déduire un mode d'intra-prédiction d'un bloc courant à l'aide d'un mode d'intra-prédiction d'un bloc voisin adjacent au bloc courant; configurer un échantillon de référence pour le bloc courant; et réaliser une intra-prédiction sur le bloc courant à l'aide du mode d'intra-prédiction et de l'échantillon de référence. L'étape de déduction du mode d'intra-prédiction du bloc courant comprend une étape de configuration d'une liste MPM selon que le mode d'intra-prédiction du bloc courant est ou non un mode planaire.
(KO)
영상 부호화/복호화 방법 및 장치가 제공된다. 본 발명에 따른 영상 복호화 방법은, 현재 블록에 인접한 주변 블록의 화면 내 예측 모드를 이용하여 상기 현재 블록의 화면 내 예측 모드를 유도하는 단계, 상기 현재 블록에 대한 참조 샘플을 구성하는 단계 및 상기 화면 내 예측 모드와 상기 참조 샘플을 이용하여 상기 현재 블록에 대한 화면 내 예측을 수행하는 단계를 포함하고, 상기 현재 블록의 화면 내 예측 모드를 유도하는 단계는, 상기 현재 블록의 화면 내 예측 모드가 Planar 모드인지 여부에 기초하여 MPM 리스트를 구성하는 단계를 포함한다.
Also published as
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