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1. WO2019050385 - METHOD AND APPARATUS FOR ENTROPY ENCODING AND DECODING VIDEO SIGNAL

Publication Number WO/2019/050385
Publication Date 14.03.2019
International Application No. PCT/KR2018/013489
International Filing Date 07.11.2018
IPC
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 19/70 2014.01
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
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 19/139 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
136Incoming video signal characteristics or properties
137Motion inside a coding unit, e.g. average field, frame or block difference
139Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
CPC
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 19/139
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
137Motion inside a coding unit, e.g. average field, frame or block difference
139Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
H04N 19/159
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
159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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
H04N 19/46
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
46Embedding additional information in the video signal during the compression process
H04N 19/51
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
Applicants
  • 엘지전자 주식회사 LG ELECTRONICS INC. [KR]/[KR]
Inventors
  • 이재호 LEE, Jaeho
Agents
  • 특허법인 로얄 ROYAL PATENT & LAW OFFICE
Priority Data
62/555,05307.09.2017US
62/646,89122.03.2018US
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD AND APPARATUS FOR ENTROPY ENCODING AND DECODING VIDEO SIGNAL
(FR) PROCÉDÉ ET APPAREIL DE CODAGE ET DE DÉCODAGE ENTROPIQUES DE SIGNAL VIDÉO
(KO) 비디오 신호를 엔트로피 인코딩, 디코딩하는 방법 및 장치
Abstract
(EN)
The present invention relates to a method for performing entropy decoding on a video signal including a current block. The method comprises the steps of: deriving affine coding information and/or affine prediction mode information of a left block and/or an upper block which are adjacent to the current block; determining a context index of a syntax element associated with an affine prediction of the current block on the basis of at least one of the affine coding information and/or the affine prediction mode information of the left block and/or the upper block; and entropy decoding the syntax element associated with the affine prediction of the current block on the basis of the context index.
(FR)
L'invention concerne un procédé permettant de réaliser un décodage entropique sur un signal vidéo comprenant un bloc actuel. Le procédé consiste à : dériver des informations de codage affine et/ou des informations de mode de prédiction affine d'un bloc gauche et/ou d'un bloc supérieur qui sont adjacents au bloc actuel ; déterminer un indice contextuel d'un élément de syntaxe associé à une prédiction affine du bloc actuel d'après les informations de codage affine et/ou les informations de mode de prédiction affine du bloc gauche et/ou du bloc supérieur ; et décoder par entropie l'élément de syntaxe associé à la prédiction affine du bloc actuel d'après l'indice contextuel.
(KO)
본 발명은, 현재 블록을 포함하는 비디오 신호에 대해 엔트로피 디코딩을 수행하는 방법에 있어서, 상기 현재 블록에 이웃하는 좌측 블록 및/또는 상측 블록의 어파인 코딩 정보 및/또는 어파인 예측 모드 정보를 유도하는 단계; 상기 좌측 블록 및/또는 상기 상측 블록의 어파인 코딩 정보 및/또는 어파인 예측 모드 정보 중 적어도 하나에 기초하여 상기 현재 블록의 어파인 예측 관련 신택스 요소의 컨텍스트 인덱스를 결정하는 단계; 및 상기 컨텍스트 인덱스에 기초하여, 상기 현재 블록의 어파인 예측 관련 신택스 요소를 엔트로피 디코딩하는 단계를 포함하는 방법을 제공한다.
Also published as
KR1020207004146
Latest bibliographic data on file with the International Bureau