WO2015089693A1 - Méthode d'approximation pour opération de division - Google Patents

Méthode d'approximation pour opération de division Download PDF

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Publication number
WO2015089693A1
WO2015089693A1 PCT/CN2013/089482 CN2013089482W WO2015089693A1 WO 2015089693 A1 WO2015089693 A1 WO 2015089693A1 CN 2013089482 W CN2013089482 W CN 2013089482W WO 2015089693 A1 WO2015089693 A1 WO 2015089693A1
Authority
WO
WIPO (PCT)
Prior art keywords
division operation
equal
approximation
dvx
integer
Prior art date
Application number
PCT/CN2013/089482
Other languages
English (en)
Inventor
Kai Zhang
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/CN2013/089482 priority Critical patent/WO2015089693A1/fr
Priority to PCT/CN2014/081460 priority patent/WO2015007159A1/fr
Priority to US14/891,129 priority patent/US10045014B2/en
Priority to CA2909550A priority patent/CA2909550C/fr
Priority to CN201480037699.7A priority patent/CN105359520B/zh
Publication of WO2015089693A1 publication Critical patent/WO2015089693A1/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
    • H04N19/50—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 approximation for division operation.
  • the presented invention relates to depth coding method in three-Dimensional (3D) video processing.
  • a disparity vector (DVx, 0) can be derived from its corresponding depth value (dep) by a linear relationship as
  • w and b are two camera parameters.
  • (1) is implemented in an integer form thus w and b can be transmitted from the encoder to the decoder as integers.
  • a DDD candidate When the collocated texture block of the current depth block is predicted by disparity- compensated prediction (DCP), a DDD candidate will be inserted into the merging candidate list right after the texture candidate.
  • DCP disparity- compensated prediction
  • a DDD candidate all prediction samples in the current block are set as dep calculated by (2), which is implemented in an integer form.
  • Fig. 1 shows the procedure to derive a depth value from its corresponding disparity vector. It should be noted that the DDD candidate is invalid on the base view since DCP is applied only on dependent views.
  • ⁇ is an offset value
  • ⁇ is set equal to 1 «( ⁇ + ⁇ ).
  • ⁇ is set equal to (1«( + ⁇ ))+ yQ), where
  • Offset is set equal to ⁇ « ⁇ p + -l).
  • 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 une méthode d'approximation pour opération de division. Il est proposé d'utiliser des opérations de multiplication, d'addition (soustraction), de décalage et de comparaison pour remplacer l'opération de division.
PCT/CN2013/089482 2013-07-15 2013-12-16 Méthode d'approximation pour opération de division WO2015089693A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PCT/CN2013/089482 WO2015089693A1 (fr) 2013-12-16 2013-12-16 Méthode d'approximation pour opération de division
PCT/CN2014/081460 WO2015007159A1 (fr) 2013-07-15 2014-07-02 Procédé de codage de profondeur déduite de l'écart dans le codage vidéo 3d
US14/891,129 US10045014B2 (en) 2013-07-15 2014-07-02 Method of disparity derived depth coding in 3D video coding
CA2909550A CA2909550C (fr) 2013-07-15 2014-07-02 Procede de codage de profondeur deduite de l'ecart dans le codage video 3d
CN201480037699.7A CN105359520B (zh) 2013-07-15 2014-07-02 在三维视频编码中的深度编码方法和装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2013/089482 WO2015089693A1 (fr) 2013-12-16 2013-12-16 Méthode d'approximation pour opération de division

Publications (1)

Publication Number Publication Date
WO2015089693A1 true WO2015089693A1 (fr) 2015-06-25

Family

ID=53401887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/089482 WO2015089693A1 (fr) 2013-07-15 2013-12-16 Méthode d'approximation pour opération de division

Country Status (1)

Country Link
WO (1) WO2015089693A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113812159A (zh) * 2019-05-14 2021-12-17 北京字节跳动网络技术有限公司 视频编解码中的缩放方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1532811A (zh) * 2003-03-21 2004-09-29 ض� 用于依佛雷姆-玛拉赫滤波器的精确分段多项式近似
US20130114688A1 (en) * 2011-11-07 2013-05-09 Louis Joseph Kerofsky Video Decoder with Constrained Dynamic Range
CN103237223A (zh) * 2013-05-10 2013-08-07 北方工业大学 基于熵的lcu快速划分

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1532811A (zh) * 2003-03-21 2004-09-29 ض� 用于依佛雷姆-玛拉赫滤波器的精确分段多项式近似
US20130114688A1 (en) * 2011-11-07 2013-05-09 Louis Joseph Kerofsky Video Decoder with Constrained Dynamic Range
CN103237223A (zh) * 2013-05-10 2013-08-07 北方工业大学 基于熵的lcu快速划分

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113812159A (zh) * 2019-05-14 2021-12-17 北京字节跳动网络技术有限公司 视频编解码中的缩放方法

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