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1. WO2016154336 - CHROMA SUBSAMPLING AND GAMUT RESHAPING

Publication Number WO/2016/154336
Publication Date 29.09.2016
International Application No. PCT/US2016/023813
International Filing Date 23.03.2016
IPC
H04N 19/85 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
85using pre-processing or post-processing specially adapted for video compression
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 19/167
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 19/1887
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
1887the unit being a variable length codeword
H04N 19/30
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
30using hierarchical techniques, e.g. scalability
H04N 19/33
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
30using hierarchical techniques, e.g. scalability
33in the spatial domain
H04N 19/85
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
85using pre-processing or post-processing specially adapted for video compression
Applicants
  • DOLBY LABORATORIES LICENSING CORPORATION [US]/[US]
Inventors
  • ATKINS, Robin
  • PYTLARZ, Jaclyn, Anne
Agents
  • ANDERSEN, Robert, L.
Priority Data
62/138,24125.03.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CHROMA SUBSAMPLING AND GAMUT RESHAPING
(FR) SOUS-ÉCHANTILLONNAGE DE LA CHROMINANCE ET REMISE EN FORME DE GAMUT
Abstract
(EN)
Downsampled video content is generated in a subsampling color space from linearized video content in the subsampling color space. The linearized video content represents a first spatial dimension, whereas the downsampled video content represents a second spatial dimension lower than the first spatial dimension. Opponent channel data is derived in a transmission color space from the downsampled video content. Output video content is generated from luminance data in the linearized video content and the opponent channel data in the transmission color space. The output video content may be decoded by a downstream recipient device to generate video content in an output color space.
(FR)
L'invention concerne un contenu vidéo sous-échantillonné généré dans un espace de couleurs de sous-échantillonnage à partir d'un contenu vidéo linéarisé dans l'espace de couleurs de sous-échantillonnage. Le contenu vidéo linéarisé représente une première dimension spatiale, tandis que le contenu vidéo sous-échantillonné représente une seconde dimension spatiale inférieure à la première dimension spatiale. Des données de canaux opposés sont dérivées dans un espace de couleurs de transmission à partir du contenu vidéo sous-échantillonné. Un contenu vidéo de sortie est généré à partir de données de luminance dans le contenu vidéo linéarisé et des données de canaux opposés dans l'espace de couleurs de transmission. Le contenu vidéo de sortie peut être décodé par un dispositif destinataire en aval pour générer un contenu vidéo dans un espace de couleurs de sortie.
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