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1. WO2020060185 - IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

Publication Number WO/2020/060185
Publication Date 26.03.2020
International Application No. PCT/KR2019/012060
International Filing Date 18.09.2019
IPC
H04N 19/132 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
132Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
H04N 19/593 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
593involving spatial prediction techniques
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 19/176 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
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 19/119 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
119Adaptive subdivision aspects e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
Applicants
  • 한국전자통신연구원 ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE [KR/KR]; 대전시 유성구 가정로 218 218, Gajeong-ro, Yuseong-gu Daejeon 34129, KR
Inventors
  • 이진호 LEE, Jin Ho; KR
  • 강정원 KANG, Jung Won; KR
  • 이하현 LEE, Ha Hyun; KR
  • 임성창 LIM, Sung Chang; KR
  • 김휘용 KIM, Hui Yong; KR
Agents
  • 성병기 SUNG, Byung Kee; KR
Priority Data
10-2018-011201119.09.2018KR
10-2018-011469027.09.2018KR
10-2018-013787912.11.2018KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED
(FR) DISPOSITIF ET PROCÉDÉ DE CODAGE/DÉCODAGE D'IMAGE, ET SUPPORT D'ENREGISTREMENT SUR LEQUEL UN FLUX BINAIRE EST STOCKÉ
(KO) 영상 부호화/복호화 방법, 장치 및 비트스트림을 저장한 기록 매체
Abstract
(EN)
An image encoding/decoding method and device are provided. 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 peripheral 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, when the intra prediction mode of the peripheral block is not available, the intra prediction mode of the peripheral block can be replaced with a planar mode.
(FR)
L'invention concerne un procédé et un dispositif 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 périphérique adjacent au bloc courant ; configurer un échantillon de référence pour le bloc courant ; et exécuter une intra-prédiction sur le bloc courant à l'aide du mode d’intra-prédiction et de l'échantillon de référence. Lorsque le mode d’intra-prédiction du bloc périphérique n'est pas disponible, le mode d’intra-prédiction du bloc périphérique peut être remplacé par un mode planaire.
(KO)
영상 부호화/복호화 방법 및 장치가 제공된다. 본 발명에 따른 영상 복호화 방법은, 현재 블록에 인접한 주변 블록의 화면내 예측 모드를 이용하여 상기 현재 블록의 화면내 예측 모드를 유도하는 단계, 상기 현재 블록에 대한 참조 샘플을 구성하는 단계, 및 상기 화면내 예측 모드와 상기 참조 샘플을 이용하여 상기 현재 블록에 대한 화면내 예측을 수행하는 단계를 포함하고, 상기 주변 블록의 화면내 예측 모드가 가용하지 않은 경우, 상기 주변 블록의 화면내 예측 모드는 Planar 모드로 대체될 수 있다.
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