Title:
An image decoding method and a device
Document Type and Number:
Japanese Patent JP6006763
Kind Code:
B2
Abstract:
An image decoding method according to the present invention comprises: reconstructing an intra prediction mode group indicator and a prediction mode index of the current block; creating a first group with valid intra prediction modes of blocks left and above the current block; and, from the group indicated by the intra prediction mode group indicator, selecting a intra prediction mode corresponding to the prediction mode index as the intra prediction mode of the current block, wherein the size of a prediction block is in accordance with the information regarding the transformation size. Therefore, on the basis of the valid intra prediction modes of blocks left and above the current block, the intra prediction mode group indicator and the prediction mode index are determined by including, in the first group, the modes with high probabilities of being identical to the intra prediction mode of the current block, thereby reducing the amount of intra prediction information to be encoded.
Inventors:
Park Shinji
Application Number:
JP2014177653A
Publication Date:
October 12, 2016
Filing Date:
September 02, 2014
Export Citation:
Assignee:
Infobridge PTT. LDT.
International Classes:
H04N19/463; H04N19/593
Foreign References:
| WO2013051903A1 |
Other References:
Wei-Jung Chien et al.,Parsing friendly intra mode coding,米国,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 2日,[JCTVC-F459] (version 1)
Thomas Wiegand et al.,WD3: Working Draft 3 of High-Efficiency Video Coding,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 5th Meeting: Geneva, CH,2011年 6月27日, [JCTVC-E603] (version 8)
Toru Kumakura, Shigeru Fukushima,Intra prediction mode coding based on direction difference,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14日,JCTVC-F339
Akira Minezawa et al.,An improved intra vertical and horizontal prediction,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14日,JCTVC-F172
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15日, [JCTVC-F459] (version 4)
Benjamin Bross et al.,High efficiency video coding (HEVC) text specification draft 6,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 4月 2日,p.99, [JCTVC-H1003] (version 22)
Thomas Wiegand et al.,WD3: Working Draft 3 of High-Efficiency Video Coding,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11 5th Meeting: Geneva, CH,2011年 6月27日, [JCTVC-E603] (version 8)
Toru Kumakura, Shigeru Fukushima,Intra prediction mode coding based on direction difference,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14日,JCTVC-F339
Akira Minezawa et al.,An improved intra vertical and horizontal prediction,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14日,JCTVC-F172
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15日, [JCTVC-F459] (version 4)
Benjamin Bross et al.,High efficiency video coding (HEVC) text specification draft 6,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 4月 2日,p.99, [JCTVC-H1003] (version 22)
Attorney, Agent or Firm:
Hidesaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto
Natsuki Morishita
Takatoshi Iida
Daisuke Ishikawa
Kensaku Yamamoto
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