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1. WO2020140892 - METHOD FOR PROCESSING PROJECTION-BASED FRAME

Publication Number WO/2020/140892
Publication Date 09.07.2020
International Application No. PCT/CN2019/130478
International Filing Date 31.12.2019
IPC
H04N 19/597 2014.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
597specially adapted for multi-view video sequence encoding
H04N 13/00 2018.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
CPC
H04N 13/139
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
13Stereoscopic video systems; Multi-view video systems; Details thereof
10Processing, recording or transmission of stereoscopic or multi-view image signals
106Processing image signals
139Format conversion, e.g. of frame-rate or size
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 19/167
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
167Position within a video image, e.g. region of interest [ROI]
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 19/597
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
50using predictive coding
597specially adapted for multi-view video sequence encoding
H04N 19/70
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
Applicants
  • MEDIATEK INC. [CN]/[CN]
Inventors
  • SHIH, Cheng-Hsuan
  • LEE, Ya-Hsuan
  • LIN, Jian-Liang
Agents
  • BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD.
Priority Data
16/729,51430.12.2019US
62/787,44902.01.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR PROCESSING PROJECTION-BASED FRAME
(FR) PROCÉDÉ DE TRAITEMENT DE TRAME BASÉE SUR UNE PROJECTION
Abstract
(EN)
A video processing method includes: receiving a part of a bitstream; decoding the part of the bitstream to generate a reconstructed projection-based frame with at least one projection face and at least one padding region packed in a projection layout of a 360-degree Virtual Reality (360 VR) projection; obtaining chroma sampling position information that is signaled via the bitstream; and performing a blending process for generating a blended chroma sample value at a target chroma sample position by blending a first chroma sample value obtained for a first chroma sample position in the at least one projection face and a second chroma sample value obtained for a second chroma sample position in the at least one padding region. At least one of the target chroma sample position, the first chroma sample position and the second chroma sample position is determined according to the chroma sampling position information.
(FR)
L'invention concerne un procédé de traitement vidéo consistant à : recevoir une partie d'un train de bits ; décoder la partie du train de bits pour générer une trame reconstruite basée sur une projection avec au moins une face de projection et au moins une région de remplissage emballée dans une disposition de projection d'une réalité virtuelle à 360 degrés (360 VR) ; obtenir des informations de position d'échantillonnage de chrominance qui sont signalées par l'intermédiaire du train de bits ; et exécuter un processus de mélange pour générer une valeur d'échantillon de chrominance mélangée à une position d'échantillon de chrominance cible par mélange d'une première valeur d'échantillon de chrominance obtenue pour une première position d'échantillon de chrominance dans la ou les faces de projection et d'une seconde valeur d'échantillon de chrominance obtenue pour une seconde position d'échantillon de chrominance dans la ou les régions de remplissage. La position d'échantillon de chrominance cible et/ou la première position d'échantillon de chrominance et/ou la seconde position d'échantillon de chrominance est déterminée en fonction des informations de position d'échantillonnage de chrominance.
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