WO2015143603A1 - PROCÉDÉ AMÉLIORÉ POUR LA PRÉDICTION TEMPORELLE DE VECTEUR DE MOUVEMENT EN CODAGE VIDÉO<u /><u /> - Google Patents

PROCÉDÉ AMÉLIORÉ POUR LA PRÉDICTION TEMPORELLE DE VECTEUR DE MOUVEMENT EN CODAGE VIDÉO<u /><u /> Download PDF

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Publication number
WO2015143603A1
WO2015143603A1 PCT/CN2014/073949 CN2014073949W WO2015143603A1 WO 2015143603 A1 WO2015143603 A1 WO 2015143603A1 CN 2014073949 W CN2014073949 W CN 2014073949W WO 2015143603 A1 WO2015143603 A1 WO 2015143603A1
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WO
WIPO (PCT)
Prior art keywords
picture
collocated
poc
same
tmvp
Prior art date
Application number
PCT/CN2014/073949
Other languages
English (en)
Inventor
Kai Zhang
Jicheng An
Xianguo Zhang
Han HUANG
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/CN2014/073949 priority Critical patent/WO2015143603A1/fr
Publication of WO2015143603A1 publication Critical patent/WO2015143603A1/fr

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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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • H04N19/517—Processing of motion vectors by encoding
    • H04N19/52—Processing of motion vectors by encoding by predictive encoding
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • 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 video processing.
  • the presented invention relates to temporal motion vector prediction in video coding.
  • TMVP temporal motion vector prediction
  • MVP motion vector predictor
  • the collocated picture is a temporal reference picture for the current picture.
  • the collocated picture can be derived implicitly at decoder as specified in H.264/AVC, or it can be signaled explicitly from the encoder to the decoder as specified in H.265/HEVC.
  • the collocated block and the current block are at the same relative position in the collocated picture and in the current picture respectively.
  • the motion vector (MV) in the collocated block is named as collocated MV.
  • TMVP is derived by scaling the collocated MV according to the time distances.
  • Time distance (or named POC distance, POC difference) for a MV specifies the time distance between the picture the MV belonging to and the picture the MV pointing to.
  • POC represents picture order count.
  • the time distance for the collocated MV is available since the collocated MV has been determined when the collocated picture is encoded/ decoded.
  • the time distance for the TMVP is determined by determining the reference picture of the TMVP.
  • the reference for TMVP is signaled explicitly for a block coded with advanced motion vector prediction (AMVP) mode, while the reference for TMVP is determined implicitly for a block coded with merge mode.
  • AMVP advanced motion vector prediction
  • collocated block possesses only one MV, it should be treated as the collocated MV directly. If the collocated block possesses more than one MV, e.g., two MVs with one from reference list 0 and the other from reference list 1, the collocated MV should be selected as follows as specified in clause 8.5.3.2.8 in HEVC.
  • the collocated MV should be chosen as the one in the reference list the same as the reference list in which the reference for TMVP is.
  • collocated MV should be chosen as the one in the reference list with the same value as collocated from lO flag, which is signaled in slice header.
  • tMVP (cMV * tD )l cD.
  • HEVC High Efficiency Video Coding
  • a motion compression is applied to reduce the storage required by MVs.
  • a 16: 1 compression is applied after a picture is encoded /decoded.
  • MVC Multi-view video coding
  • 3DVC 3D video coding
  • SVC scalable video coding
  • an inter-view reference picture can be inserted into the reference list as a special reference picture for a picture on a dependent view.
  • a low-quality reference picture can be inserted into the reference list as a special reference picture for a picture on a high-quality layer.
  • an up-sampled low-resolution reference picture can be inserted into the reference list as a special reference picture for a picture on a high-resolution layer.
  • Fig. 1 is a diagram illustrating TMVP in video coding
  • Fig. 2 is a diagram illustrating to use the interview reference picture as the collocated picture in MVC or 3DVC;
  • Fig. 3 is a diagram illustrating to use the corresponding texture picture as the collocated picture in MVC or 3DVC with depth;
  • Fig. 4 is a diagram illustrating to use the inter-quality-layer picture as the collocated picture in SVC;
  • Fig. 5 is a diagram illustrating to use the inter-spatial-layer picture as the collocated picture in SVC;
  • Fig. 6 is a diagram illustrating a general paradigm for virtual collocated picture.
  • the judgment 'If DiffPicOrderCnt( aPic, currPic ) is less than or equal to 0 for every picture aPic in every reference picture list of the current slice' is not executed if the POC of the current picture and that of the collocated picture are the same.
  • the collocated MV should be chosen as the one in the reference list the same as the reference list in which the reference for TMVP is, if the collocated block possesses more than one MV, and the POC of the current picture and that of the collocated picture are the same. For example, if the POC of the current picture and that of the collocated picture are the same, the reference for TMVP is in the reference list 0, and the collocated block possesses two MVs from reference list 0 and reference list 1 respectively, then the MV from reference list 0 should be chosen as the collocated MV.
  • the reference for TMVP is in the reference list 1, and the collocated block possesses two MVs from reference list 0 and reference list 1 respectively, then the MV from reference list 1 should be chosen as the collocated MV.
  • the POC of the current picture and that of the collocated picture are the same in the following cases:
  • the inter- view reference picture is treated as the collocated picture used in TMVP in MVC, such as H.264 MVC extension or MV-HEVC, or 3DVC such as 3D-HEVC.as depicted in Fig. 2.
  • the corresponding texture picture is treated as the collocated picture used in TMVP to code a depth picture in MVC, such as H.264 MVC extension or MV-HEVC, or 3DVC such as 3D-HEVC with depth coding as depicted in Fig. 3.
  • MVC such as H.264 MVC extension or MV-HEVC
  • 3DVC such as 3D-HEVC with depth coding as depicted in Fig. 3.
  • the inter-quality-layer reference picture is treated as the collocated picture used in TMVP to code a picture in SVC, such as H.264 SVC extension or HEVC SVC extension as depicted in Fig. 4.
  • the upsampled or scaled inter-spatial-layer reference picture is treated as the collocated picture used in TMVP to code a picture in SVC, such as H.264 SVC extension or HEVC SVC extension as depicted in Fig. 5.
  • the proposed collocated MV selection method does not change the CU level design of HEVC. Only slice level or picture level changes are required.
  • 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.

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

Abstract

L'invention concerne un procédé pour améliorer la dérivation de la prédiction temporelle de vecteur de mouvement. L'invention concerne en outre certains procédés spéciaux pour MVC, SVC, et 3DVC.
PCT/CN2014/073949 2014-03-24 2014-03-24 PROCÉDÉ AMÉLIORÉ POUR LA PRÉDICTION TEMPORELLE DE VECTEUR DE MOUVEMENT EN CODAGE VIDÉO<u /><u /> WO2015143603A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/073949 WO2015143603A1 (fr) 2014-03-24 2014-03-24 PROCÉDÉ AMÉLIORÉ POUR LA PRÉDICTION TEMPORELLE DE VECTEUR DE MOUVEMENT EN CODAGE VIDÉO<u /><u />

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2014/073949 WO2015143603A1 (fr) 2014-03-24 2014-03-24 PROCÉDÉ AMÉLIORÉ POUR LA PRÉDICTION TEMPORELLE DE VECTEUR DE MOUVEMENT EN CODAGE VIDÉO<u /><u />

Publications (1)

Publication Number Publication Date
WO2015143603A1 true WO2015143603A1 (fr) 2015-10-01

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PCT/CN2014/073949 WO2015143603A1 (fr) 2014-03-24 2014-03-24 PROCÉDÉ AMÉLIORÉ POUR LA PRÉDICTION TEMPORELLE DE VECTEUR DE MOUVEMENT EN CODAGE VIDÉO<u /><u />

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019178721A1 (fr) * 2018-03-19 2019-09-26 Qualcomm Incorporated Perfectionnements apportés à une prédiction temporelle évoluée d'un vecteur de mouvement
WO2020140242A1 (fr) * 2019-01-03 2020-07-09 北京大学 Procédé et appareil de traitement vidéo

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013168407A1 (fr) * 2012-05-09 2013-11-14 Panasonic Corporation Procédé pour effectuer une prédiction de vecteur de mouvement, procédés de codage et de décodage, et appareils associés
WO2014005467A1 (fr) * 2012-07-03 2014-01-09 Mediatek Singapore Pte. Ltd. Procédé et appareil de prédiction de vecteur de mouvement inter-vues et de prédiction de vecteur de disparité dans un codage vidéo 3d
WO2014011652A2 (fr) * 2012-07-09 2014-01-16 Qualcomm Incorporated Prédiction de vecteur de mouvement temporel dans des extensions de codage vidéo
US20140064374A1 (en) * 2012-08-29 2014-03-06 Vid Scale, Inc. Method and apparatus of motion vector prediction for scalable video coding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013168407A1 (fr) * 2012-05-09 2013-11-14 Panasonic Corporation Procédé pour effectuer une prédiction de vecteur de mouvement, procédés de codage et de décodage, et appareils associés
WO2014005467A1 (fr) * 2012-07-03 2014-01-09 Mediatek Singapore Pte. Ltd. Procédé et appareil de prédiction de vecteur de mouvement inter-vues et de prédiction de vecteur de disparité dans un codage vidéo 3d
WO2014011652A2 (fr) * 2012-07-09 2014-01-16 Qualcomm Incorporated Prédiction de vecteur de mouvement temporel dans des extensions de codage vidéo
US20140064374A1 (en) * 2012-08-29 2014-03-06 Vid Scale, Inc. Method and apparatus of motion vector prediction for scalable video coding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019178721A1 (fr) * 2018-03-19 2019-09-26 Qualcomm Incorporated Perfectionnements apportés à une prédiction temporelle évoluée d'un vecteur de mouvement
CN111869214A (zh) * 2018-03-19 2020-10-30 高通股份有限公司 对高级时间运动矢量预测的改进
WO2020140242A1 (fr) * 2019-01-03 2020-07-09 北京大学 Procédé et appareil de traitement vidéo

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