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1. WO2020141849 - METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL BY USING INTER PREDICTION

Publication Number WO/2020/141849
Publication Date 09.07.2020
International Application No. PCT/KR2019/018781
International Filing Date 31.12.2019
IPC
H04N 19/513 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
513Processing of motion vectors
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 19/70 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 19/122 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
12Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform and sub-band transform or selection between H.263 and H.264
122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
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 19/119 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
CPC
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 19/122
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
12Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
122Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
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 19/172
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
172the region being a picture, frame or field
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 19/513
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
Applicants
  • 엘지전자 주식회사 LG ELECTRONICS INC. [KR]/[KR]
Inventors
  • 조제인 ZHAO, Jane
  • 김승환 KIM, Seunghwan
Agents
  • 특허법인 로얄 ROYAL PATENT & LAW OFFICE
Priority Data
62/787,36201.01.2019US
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL BY USING INTER PREDICTION
(FR) PROCÉDÉ ET APPAREIL DE TRAITEMENT D'UN SIGNAL VIDÉO À L'AIDE D'UNE INTER-PRÉDICTION
(KO) 화면간 예측을 사용하여 비디오 신호를 처리하기 위한 방법 및 장치
Abstract
(EN)
An embodiment of the present specification provides a method and apparatus for processing a video signal by using inter prediction. A method for decoding a video signal, according to one embodiment of the present specification, comprises the steps of: acquiring information about a dividing direction, acquired when the width and height of a current block are less than respective reference sizes; acquiring at least one merge index for the current block divided into a first triangular block and a second triangular block according to the dividing direction; determining a first merge candidate including a first reference picture index and a first motion vector from a merge candidate list, on the basis of the at least one merge index; determining a second merge candidate including a second reference picture index and a second motion vector from the merge candidate list, on the basis of the at least one merge index; and generating prediction samples of the first triangular block and the second triangular block on the basis of the first merge candidate and the second merge candidate. Computation complexity and processing time can be reduced by limiting the maximum block size for performing prediction using triangulation.
(FR)
La présente invention concerne, selon un mode de réalisation, un procédé et un appareil destinés à traiter un signal vidéo à l'aide d'une inter-prédiction. Un procédé de décodage d'un signal vidéo, selon un mode de réalisation de la présente invention, comprend les étapes consistant à : acquérir des informations concernant une direction de division, acquises lorsque la largeur et la hauteur d'un bloc courant sont inférieures à des tailles de référence respectives ; acquérir au moins un indice de fusion pour le bloc courant divisé en un premier bloc triangulaire et un second bloc triangulaire selon la direction de division ; déterminer un premier candidat de fusion comprenant un premier indice d'image de référence et un premier vecteur de mouvement à partir d'une liste de candidats de fusion, sur la base du ou des indices de fusion ; déterminer un second candidat de fusion comprenant un second indice d'image de référence et un second vecteur de mouvement à partir de la liste de candidats de fusion, sur la base du ou des indices de fusion ; et générer des échantillons de prédiction du premier bloc triangulaire et du second bloc triangulaire sur la base du premier candidat de fusion et du second candidat de fusion. La complexité de calcul et le temps de traitement peuvent être réduits en limitant la taille de bloc maximale pour effectuer une prédiction à l'aide de la triangulation.
(KO)
본 명세서의 실시예는 화면간 예측(inter prediction)을 사용하여 비디오 신호를 처리하기 위한 방법 및 장치를 제공한다. 본 명세서의 일 실시예에 따른 비디오 신호의 디코딩 방법은, 현재 블록의 현재 블록의 너비와 높이가 각각 기준 크기 보다 작은 경우 획득되는 분할 방향에 대한 정보를 획득하는 단계와, 상기 분할 방향에 따라 제1 삼각 블록 및 제2 삼각 블록으로 분할된 현재 블록에 대한 적어도 하나의 머지 인덱스를 획득하는 단계와, 상기 적어도 하나의 머지 인덱스에 기반하여 머지 후보 리스트로부터 제1 참조 픽처 인덱스 및 제1 움직임 벡터를 포함하는 제1 머지 후보를 결정하는 단계와, 상기 적어도 하나의 머지 인덱스에 기반하여 머지 후보 리스트로부터 제2 참조 픽처 인덱스 및 제2 움직임 벡터를 포함하는 제2 머지 후보를 결정하는 단계와, 상기 제1 머지 후보 및 상기 제2 머지 후보에 기반하여 상기 제1 삼각 블록 및 상기 제2 삼각 블록의 예측 샘플들을 생성하는 단계를 포함한다. 삼각 분할을 사용한 예측 수행을 위한 최대 블록 크기를 제한함으로써 연산 복잡도 및 처리 시간을 감소시킬 수 있다.
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