WO2015096093A1 - Contextes cabac simplifiés en 3dvc - Google Patents

Contextes cabac simplifiés en 3dvc Download PDF

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Publication number
WO2015096093A1
WO2015096093A1 PCT/CN2013/090566 CN2013090566W WO2015096093A1 WO 2015096093 A1 WO2015096093 A1 WO 2015096093A1 CN 2013090566 W CN2013090566 W CN 2013090566W WO 2015096093 A1 WO2015096093 A1 WO 2015096093A1
Authority
WO
WIPO (PCT)
Prior art keywords
syntax element
neighboring block
ctu
context
cabac
Prior art date
Application number
PCT/CN2013/090566
Other languages
English (en)
Inventor
Kai Zhang
Yi-Wen Chen
Jian-Liang Lin
Jicheng An
Xianguo Zhang
Original Assignee
Mediatek Singapore Pte. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mediatek Singapore Pte. Ltd. filed Critical Mediatek Singapore Pte. Ltd.
Priority to PCT/CN2013/090566 priority Critical patent/WO2015096093A1/fr
Priority to CA2908115A priority patent/CA2908115C/fr
Priority to CN201480029875.2A priority patent/CN105247863B/zh
Priority to KR1020157031924A priority patent/KR101817589B1/ko
Priority to PCT/CN2014/080601 priority patent/WO2015003554A1/fr
Priority to KR1020187000290A priority patent/KR101909863B1/ko
Priority to US14/785,011 priority patent/US9973759B2/en
Publication of WO2015096093A1 publication Critical patent/WO2015096093A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/597—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding

Definitions

  • the invention relates generally to Three-Dimensional (3D) video processing.
  • the presented invention relates to advanced residual prediction.
  • the encoder determines to enable or disable the IC or ARP according to the rate-distortion optimization (RDO) criterion, and signals the control flag ic flag or arp flag, which is 0 or 1, in the bit-stream.
  • RDO rate-distortion optimization
  • X_model[idx] is chosen to code X flag, where idx is calculated as
  • Idx X_flag(A)+X_flag(B), if A and B are both available;
  • Idx X flag(A), if A is available but B is unavailable;
  • Idx X flag(B), if A is unavailable but B is available;
  • Idx 0, if A and B are both unavailable;
  • X flag(A) and X flag(B) represent X flag in the left and above neighbouring blocks respectively as depicted in Figure 1.
  • Coding tree unit is the basic processing unit and conceptually corresponds in structure to macroblock units that were used in several previous video standards.
  • CTU is also referred to as largest coding unit (LCU). Since the above neighbouring block is in a different CTU from the current CTU, a whole CTU line of X flags above the current CTU line must be stored.
  • Fig. 1 is a diagram illustrating Neighboring blocks A and B of the current block C.
  • the above neighboring block is considered as unavailable if it is in a
  • the left neighboring block is considered as unavailable if it is in a CTU different from the CTU of the current CTU.
  • the above neighboring block is always considered as unavailable. In still another embodiment, the left neighboring block is always considered as unavailable.
  • X_model[idx] is chosen to code X flag.
  • a method of choosing CABAC context models to code a syntax element without referring to the information from the neighboring blocks for contexts selection.
  • only one context is used to CABAC code this syntax element.
  • multiple contexts could also be used; given multiple contexts, the context can selected according to the CU splitting depth information, CU size of PU partitioning of current block.
  • an embodiment of the present invention can be a circuit integrated into a video compression chip or program codes integrated into video compression software to perform the processing described herein.
  • An embodiment of the present invention may also be program codes to be executed on a Digital Signal Processor (DSP) to perform the processing described herein.
  • DSP Digital Signal Processor
  • the invention may also involve a number of functions to be performed by a computer processor, a digital signal processor, a microprocessor, or field programmable gate array (FPGA).
  • processors can be configured to perform particular tasks according to the invention, by executing machine-readable software code or firmware code that defines the particular methods embodied by the invention.
  • the software code or firmware codes may be developed in different programming languages and different format or style.
  • the software code may also be compiled for different target platform.
  • different code formats, styles and languages of software codes and other means of configuring code to perform the tasks in accordance with the invention will not depart from the spirit and scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

L'invention concerne un procédé de dérivation de contextes CABAC simplifiés. Dans le procédé proposé, le bloc voisin supérieur est considéré comme non disponible lorsqu'il est dans une CTU différente de la CTU du bloc courant. Ainsi, les éléments de syntaxe situés au-dessus de la CTU courante n'ont pas besoin d'être stockés.
PCT/CN2013/090566 2013-07-08 2013-12-26 Contextes cabac simplifiés en 3dvc WO2015096093A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PCT/CN2013/090566 WO2015096093A1 (fr) 2013-12-26 2013-12-26 Contextes cabac simplifiés en 3dvc
CA2908115A CA2908115C (fr) 2013-07-08 2014-06-24 Procede de codage cabac simplifie dans le codage de video 3d
CN201480029875.2A CN105247863B (zh) 2013-07-08 2014-06-24 三维或多视图视频编码或解码的方法
KR1020157031924A KR101817589B1 (ko) 2013-07-08 2014-06-24 3d 비디오 코딩에서 단순화된 cabac 코딩의 방법
PCT/CN2014/080601 WO2015003554A1 (fr) 2013-07-08 2014-06-24 Procédé de codage cabac simplifié dans le codage de vidéo 3d
KR1020187000290A KR101909863B1 (ko) 2013-07-08 2014-06-24 3d 비디오 코딩에서 단순화된 cabac 코딩의 방법
US14/785,011 US9973759B2 (en) 2013-07-08 2014-06-24 Method of simplified CABAC coding in 3D video coding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/090566 WO2015096093A1 (fr) 2013-12-26 2013-12-26 Contextes cabac simplifiés en 3dvc

Publications (1)

Publication Number Publication Date
WO2015096093A1 true WO2015096093A1 (fr) 2015-07-02

Family

ID=53477366

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/090566 WO2015096093A1 (fr) 2013-07-08 2013-12-26 Contextes cabac simplifiés en 3dvc

Country Status (1)

Country Link
WO (1) WO2015096093A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3905692A4 (fr) * 2019-01-14 2022-03-16 Huawei Technologies Co., Ltd. Codeur vidéo, décodeur vidéo et procédé correspondant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101605255A (zh) * 2008-06-12 2009-12-16 华为技术有限公司 一种视频编解码的方法及装置
CN101677406A (zh) * 2008-09-19 2010-03-24 华为技术有限公司 一种视频编解码的方法及装置
CN102547270A (zh) * 2010-12-31 2012-07-04 联芯科技有限公司 当前块的相邻块可用性获取方法及系统
WO2012163199A1 (fr) * 2011-05-27 2012-12-06 Mediatek Inc. Procédé et appareil servant à la réduction d'une mémoire tampon de ligne pour un traitement vidéo

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101605255A (zh) * 2008-06-12 2009-12-16 华为技术有限公司 一种视频编解码的方法及装置
CN101677406A (zh) * 2008-09-19 2010-03-24 华为技术有限公司 一种视频编解码的方法及装置
CN102547270A (zh) * 2010-12-31 2012-07-04 联芯科技有限公司 当前块的相邻块可用性获取方法及系统
WO2012163199A1 (fr) * 2011-05-27 2012-12-06 Mediatek Inc. Procédé et appareil servant à la réduction d'une mémoire tampon de ligne pour un traitement vidéo

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3905692A4 (fr) * 2019-01-14 2022-03-16 Huawei Technologies Co., Ltd. Codeur vidéo, décodeur vidéo et procédé correspondant
US11902506B2 (en) 2019-01-14 2024-02-13 Huawei Technologies Co., Ltd. Video encoder, video decoder, and corresponding methods

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