Title:
A method and a device of encoding and decoding
Document Type and Number:
Japanese Patent JP6240266
Kind Code:
B2
Abstract:
The present invention provides a method for encoding an intra-frame prediction mode, including: obtaining an intra-frame prediction mode of a current intra-frame encoding block from a preset prediction mode set; obtaining reference prediction modes of the current intra-frame encoding block, where the reference prediction modes are intra-frame prediction modes of available adjacent blocks of the current intra-frame encoding block or prediction modes in a preset backup reference mode set; writing a first flag bit into a code stream according to the reference prediction modes and the intra-frame prediction mode; and, when the intra-frame prediction mode of the encoding block is different from all the reference prediction modes, obtaining a prediction mode encoding value according to a size relationship between the value of the intra-frame prediction mode and values of the reference prediction modes, and encoding the prediction mode encoding value. By using the encoding method provided by the present invention, judgment logic of an encoding end can be saved, and thereby the encoding efficiency is improved. The present invention further provides a corresponding decoding method and corresponding encoding and decoding apparatuses.
Inventors:
Yori Shogi
Application Number:
JP2016134023A
Publication Date:
November 29, 2017
Filing Date:
July 06, 2016
Export Citation:
Assignee:
HUAWEI TECHNOLOGIES CO.,LTD.
International Classes:
H04N19/593; H04N19/70
Foreign References:
| WO2013051903A1 | ||||
| WO2013037489A1 | ||||
| WO2013002556A2 | ||||
| WO2012172791A1 | ||||
| WO2012170812A1 | ||||
| WO2011152635A2 | ||||
| WO2011021838A2 | ||||
| US20110243230 |
Other References:
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Edouard FRANCOIS et al.,Modified Intra Mode Coding,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,6th Meeting: Torino,2011年 7月,JCTVC-F269,pp.1-8
Toru Kumakura et al.,Fixing the number of mpm candidates,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,6th Meeting: Torino, IT,2011年 7月,JCTVC-F340,pp.1-8
Wei-Jung Chien et al.,Parsing friendly intra mode coding,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,6th Meeting: Torino, IT,2011年 7月,JCTVC-F459,pp.1-5
Edouard FRANCOIS et al.,CE6b: Mode ranking for remaining mode coding with 2 or 3 MPMs,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,7th Meeting: Geneva, CH,2011年11月,JCTVC-G242,pp.1-5
Frank Bossen,On software complexity,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,7th Meeting: Geneva, CH,2011年11月,JCTVC-G757r1,pp.1-7
Benjamin Bross et al.,WD5: Working Draft 5 of High-Efficiency Video Coding,Joint Collaborative Team on Video Coding (JCT-VC)of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,2012年 1月 9日,JCTVC-G1103_d3 (version 4),pp.i-v, 39-40, 69-70, 82-85
Ehsan Maani and Ali Tabatabai,Intra mode coding using logical mode numbering,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,8th Meeting: San Jose, CA, USA,2012年 2月,JCTVC-H0407,pp.1-5
Hui Li Tan et al.,Non CE6: Unification of the number of intra prediction modes,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,8th Meeting: San Jose, CA, USA,2012年 2月,JCTVC-H0166r2,pp.1-4
C. Lai et al.,Non CE6: Unify the intra mode number for all PU size,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,8th Meeting: San Jose, CA, USA,2012年 2月,JCTVC-H0342_r1,pp.1-6
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Shinsuke Onuki
Tadahiko Ito
Shinsuke Onuki