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1. WO2020141816 - IMAGE ENCODING/DECODING METHOD AND DEVICE, AND RECORDING MEDIUM IN WHICH BITSTREAM IS STORED

Publication Number WO/2020/141816
Publication Date 09.07.2020
International Application No. PCT/KR2019/018630
International Filing Date 27.12.2019
IPC
H04N 19/107 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
107between spatial and temporal predictive coding, e.g. picture refresh
H04N 19/13 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
13Adaptive entropy coding, e.g. adaptive variable length coding or context adaptive binary arithmetic coding
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 19/593 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 19/51 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
503involving temporal prediction
51Motion estimation or motion compensation
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 19/107
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
107between spatial and temporal predictive coding, e.g. picture refresh
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 19/13
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
13Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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]
  • 세종대학교 산학협력단 INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY [KR]/[KR]
  • 주식회사 칩스앤미디어 CHIPS&MEDIA,INC [KR]/[KR]
  • 한국항공대학교산학협력단 INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY [KR]/[KR]
Inventors
  • 임성창 LIM, Sung Chang
  • 강정원 KANG, Jung Won
  • 이하현 LEE, Ha Hyun
  • 이진호 LEE, Jin Ho
  • 김휘용 KIM, Hui Yong
  • 이영렬 LEE, Yung Lyul
  • 정지연 JUNG, Ji Yeon
  • 김남욱 KIM, Nam Uk
  • 김명준 KIM, Myung Jun
  • 김양우 KIM, Yang Woo
  • 김대연 KIM, Dae Yeon
  • 김재곤 KIM, Jae Gon
Agents
  • 성병기 SUNG, Byung Kee
Priority Data
10-2018-017418931.12.2018KR
10-2019-005358808.05.2019KR
10-2019-007441321.06.2019KR
10-2019-009418102.08.2019KR
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 decoding method is disclosed in the present specification. The image decoding method of the present invention comprises the steps of: performing inter prediction on a current block so as to generate an inter prediction block; performing intra prediction on the current block so as to generate an intra prediction block; determining a first weighted value and a second weighted value; and respectively applying the first weighted value and the second weighted value to the inter prediction block and the intra prediction block so as to generate a final prediction block, wherein, in the step of generating the intra prediction block, the intra prediction block can be generated using a predefined intra prediction mode.
(FR)
La présente invention concerne un procédé de décodage d'image. Le procédé de décodage d'image selon la présente invention comprend les étapes consistant à : effectuer une prédiction inter sur un bloc courant de sorte à générer un bloc de prédiction inter; effectuer une prédiction intra sur le bloc courant de sorte à générer un bloc de prédiction intra ; déterminer une première valeur pondérée et une seconde valeur pondérée ; et appliquer respectivement la première valeur pondérée et la seconde valeur pondérée au bloc de prédiction inter et au bloc de prédiction intra de sorte à générer un bloc de prédiction final, dans l'étape de génération du bloc de prédiction intra le bloc de prédiction intra pouvant être généré à l'aide d'un mode de prédiction intra prédéfini.
(KO)
본 명세서에서는 영상 복호화 방법이 개시된다. 본 발명의 영상 복호화 방법은 현재 블록에 화면간 예측을 수행하여 화면간 예측 블록을 생성하는 단계, 상기 현재 블록에 화면내 예측을 수행하여 화면내 예측 블록을 생성하는 단계, 제1 가중치값 및 제2 가중치값을 결정하는 단계 및 상기 제1 가중치값 및 상기 제2 가중치 값을 상기 화면간 예측 블록 및 상기 화면내 예측 블록에 각각 적용하여 최종 예측 블록을 생성하는 단계를 포함하고, 상기 화면내 예측 블록을 생성하는 단계는, 기정의된 화면내 예측 모드를 이용하여 상기 화면내 예측 블록을 생성할 수 있다.
Also published as
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