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1. WO2012068817 - APPARATUS AND METHOD OF CONSTRAINED PARTITION SIZE FOR HIGH EFFICIENCY VIDEO CODING

Publication Number WO/2012/068817
Publication Date 31.05.2012
International Application No. PCT/CN2011/072408
International Filing Date 02.04.2011
IPC
H04N 7/32 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
26using bandwidth reduction
32involving predictive coding
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 19/159
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
157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
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 19/177
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
177the unit being a group of pictures [GOP]
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 SINGAPORE PTE. LTD. [SG]/[SG] (AllExceptUS)
  • LIU, Shan [CN]/[US] (UsOnly)
  • HUANG, Yu-Wen [CN]/[CN] (UsOnly)
  • CHANG, Yung-Chang [CN]/[CN] (UsOnly)
  • LEI, Shaw-Min [CN]/[CN] (UsOnly)
Inventors
  • LIU, Shan
  • HUANG, Yu-Wen
  • CHANG, Yung-Chang
  • LEI, Shaw-Min
Agents
  • BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD.
Priority Data
13/012,81125.01.2011US
61/416,18822.11.2010US
61/427,31227.12.2010US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) APPARATUS AND METHOD OF CONSTRAINED PARTITION SIZE FOR HIGH EFFICIENCY VIDEO CODING
(FR) APPAREIL ET PROCÉDÉ DE CODAGE VIDÉO À HAUT RENDEMENT AVEC PARTITIONNEMENT CONTRAINT
Abstract
(EN)
An apparatus and method for video coding and decoding with constrained PU partition are disclosed. In the High Efficient Video Coding (HEVC) system, rate- distortion function or other performance criterion usually is evaluated for various CU partition and PU partition during the encoding process in order to select a configuration with best possible performance. The PU design in the current HEVC development results in some redundancy that causes rate-distortion function or other performance criterion repeatedly evaluated for same PU configuration. Accordingly, constrained PU partition is developed to eliminate or reduce the redundancy in processing. Furthermore, necessary syntax to convey the information related to constrained PU partition between an encoder and a decoder is developed. Systems embodying the present invention has been shown to result in sizeable reduction in encoding and decoding time while the performance in terms of RD-rate remains approximately the same or slightly higher than a conventional HEVC system.
(FR)
Appareil et procédé de codage et de décodage vidéo avec partitionnement contraint des PU. Dans un système de codage vidéo à haut rendement (HEVC), une fonction débit-distorsion ou un autre critère de performance sont souvent évalués pour le partitionnement des CU et le partitionnement des PU au cours du processus de codage dans le but de sélectionner la configuration la plus performante possible. La conception des PU dans les systèmes HEVC actuels occasionne une certaine redondance se traduisant par une évaluation répétée de la fonction débit-distorsion ou du critère de performance pour une même configuration des PU. L'invention propose par conséquent un partitionnement contraint des PU visant à réduire voire éliminer la redondance dans le traitement. L'invention décrit en outre la syntaxe nécessaire à la transmission des informations associées au partitionnement contraint des PU entre un codeur et un décodeur. Des systèmes mettant en œuvre l'invention ont mis en évidence une réduction sensible du temps de codage et de décodage et un maintien, voire une légère amélioration, des performances en termes de débit-distorsion par rapport à un système HEVC classique.
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