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1. WO2020197966 - METHOD AND APPARATUS FOR INTERFRAME POINT CLOUD ATTRIBUTE CODING

Publication Number WO/2020/197966
Publication Date 01.10.2020
International Application No. PCT/US2020/023767
International Filing Date 20.03.2020
IPC
H04N 19/96 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
90using coding techniques not provided for in groups H04N19/10-H04N19/85103
96Tree coding, e.g. quad-tree coding
H04N 19/94 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
90using coding techniques not provided for in groups H04N19/10-H04N19/85103
94Vector quantisation
H04N 19/105 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
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
CPC
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 19/186
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
H04N 19/521
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
521for estimating the reliability of the determined motion vectors or motion vector field, e.g. for smoothing the motion vector field or for correcting motion vectors
H04N 19/547
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
547Motion estimation performed in a transform domain
Applicants
  • TENCENT AMERICA LLC [US]/[US]
Inventors
  • YEA, Sehoon
  • VOSOUGHI, Arash
  • LIU, Shan
Agents
  • RABENA, John F.
  • BIRD, John M.
  • EMERY, David P.
Priority Data
62/822,76522.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR INTERFRAME POINT CLOUD ATTRIBUTE CODING
(FR) PROCÉDÉ ET APPAREIL DE CODAGE D'ATTRIBUTS DE NUAGES DE POINTS INTER-TRAMES
Abstract
(EN)
A method of interframe point cloud attribute coding is performed by at least one processor and includes obtaining, as a motion estimation unreliability measure of motion estimation of a target frame, a value inversely proportional to a ratio of a number of first point cloud samples of the target frame respectively with second point cloud samples of an interframe reference frame, to a number of point cloud samples in the target frame. The method further includes identifying whether the obtained motion estimation unreliability measure is greater than a predetermined threshold, based on the obtained motion estimation unreliability measure being identified to be greater than the predetermined threshold, skipping motion compensation of the target frame, and based on the obtained motion estimation unreliability measure being identified to be less than or equal to the predetermined threshold, performing the motion compensation of the target frame.
(FR)
Un procédé de codage d'attributs de nuages de points inter-trames est exécuté par au moins un processeur. Le procédé comprend les étapes consistant à : obtenir, à titre de mesure de non-fiabilité d'une estimation de mouvement d'une trame cible, une valeur inversement proportionnelle à un rapport d'un nombre de premiers échantillons de nuages de points de la trame cible respectivement à des seconds échantillons de nuages de points d'une trame de référence inter-trames dans un certain nombre d'échantillons de nuages de points dans la trame cible ; identifier si la mesure de non-fiabilité d'estimation de mouvement obtenue est supérieure à un seuil prédéterminé ; et, si la mesure de non-fiabilité d'estimation de mouvement obtenue est identifiée comme étant supérieure au seuil prédéterminé, sauter la compensation de mouvement de la trame cible ; ou, si la mesure de non-fiabilité d'estimation de mouvement obtenue est identifiée comme étant inférieure ou égale au seuil prédéterminé, effectuer la compensation de mouvement de la trame cible.
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