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1. WO2020113156 - METHOD AND APPARATUS FOR VIDEO CODING

Publication Number WO/2020/113156
Publication Date 04.06.2020
International Application No. PCT/US2019/063845
International Filing Date 29.11.2019
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
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 19/11
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
H04N 19/186
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
Applicants
  • TENCENT AMERICA LLC [US]/[US]
Inventors
  • XU, Xiaozhong
  • LI, Xiang
  • LIU, Shan
Agents
  • MA, Johnny
  • MASON, J. Derek
Priority Data
16/699,23529.11.2019US
62/774,14830.11.2018US
62/790,45409.01.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR VIDEO CODING
(FR) PROCÉDÉ ET APPAREIL DE CODAGE VIDÉO
Abstract
(EN)
Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes receiving circuitry and processing circuitry. In some embodiments, the processing circuitry decodes prediction information of a current block in a current coding from a coded video bitstream. The prediction information is indicative of an intra block copy mode. Then, the processing circuitry determines a block vector that points to a reference block in a same picture as the current block. The reference block is restricted within a coding region with reconstructed samples buffered in a reference sample memory. The coding region is one of multiple predefined regions of a coding tree unit (CTU). Then, the processing circuitry reconstructs at least a sample of the current block based on the reconstructed samples of the reference block that are retrieved from the reference sample memory.
(FR)
Certains aspects de l'invention concernent des procédés et des appareils de codage/décodage vidéo. Dans certains exemples, un appareil de décodage vidéo comprend des circuits de réception et des circuits de traitement. Dans certains modes de réalisation, les circuits de traitement décodent des informations de prédiction d'un bloc courant dans un codage courant à partir d'un flux binaire vidéo codé. Les informations de prédiction indiquent un mode copie intra-bloc. Ensuite, les circuits de traitement déterminent un vecteur de bloc qui indique un bloc de référence dans une même image que le bloc courant. Le bloc de référence est restreint dans une zone de codage avec des échantillons reconstruits mis en tampon dans une mémoire d'échantillons de référence. La zone de codage est une des zones prédéfinies multiples d'une unité d'arbre de codage (CTU). Ensuite, les circuits de traitement reconstruisent au moins un échantillon du bloc courant en fonction des échantillons reconstruits du bloc de référence qui sont récupérés de la mémoire d'échantillons de référence.
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