Title:
動画像圧縮符号化方法と動画像圧縮符号化装置並びにプログラム
Document Type and Number:
Japanese Patent JP4501675
Kind Code:
B2
Abstract:
Disclosed are an apparatus and method that make high-speed mode selection possible using an evaluation standard of high encoding efficiency in intra prediction. The apparatus includes a first cost calculator (104) for generating cost values from difference information indicative of differences between prediction signals, which have been generated by a prediction signal generator, and a moving picture signal that is input to a moving picture compression encoding apparatus; a preliminary selector (105) for selecting at least two prediction modes based upon the cost values and outputting these prediction modes to a second cost calculator (106); the second cost calculator (106) for frequency-converting the prediction modes that have been output from the preliminary selector (105) and generating new cost values; and a prediction mode selector (107) for selecting the optimum prediction mode based upon the cost values prevailing after the frequency conversion.
Inventors:
Kazuki Watanabe
Kazunori Ozawa
Hiroaki Idei
Kazuhiro Oyama
Kazunori Ozawa
Hiroaki Idei
Kazuhiro Oyama
Application Number:
JP2004371112A
Publication Date:
July 14, 2010
Filing Date:
December 22, 2004
Export Citation:
Assignee:
NEC
International Classes:
H04N19/50; H04N19/103; H04N19/11; H04N19/119; H04N19/134; H04N19/137; H04N19/157; H04N19/176; H04N19/186; H04N19/196; H04N19/593; H04N19/60; H04N19/61; H04N19/625; H04N19/91
Domestic Patent References:
| JP2608909B2 | ||||
| JP5252511A | ||||
| JP7288814A | ||||
| JP8084337A | ||||
| JP8186823A | ||||
| JP8280019A | ||||
| JP2003319394A |
Foreign References:
| US20040213348 |
Other References:
筑波 健史、外3名,周波数特性に基づくH.264/AVCイントラ予測モード決定手法に関する検討,映像情報メディア学会技術報告,日本,社団法人映像情報メディア学会,2004年12月10日,第28巻、第77号,p.61-66
Mathias WIEN and Achim Dahlhoff,Hybrid Video Coding using Variable Size Block Transforms,Proceedings of SPIE: Visual Communications and Image Processing 2002,SPIE,2002年,Vol.4671,p.1040-1051
Gary Sullivan, Thomas Wiegand and Keng-Pang Lim,Joint Model Reference Encoding Methods and Decoding Concealment Methods, DRAFT INTERNATIONAL STANDARD STUDY OF ISO/IEC 14496-5/PDAM6:2003, DRAFT ITU-T Rec.H.??? DRAFT ITU-T RECOMMENDATION,Joint Video Team(JVT) of ISO/IEC MPEG and ITU-T VCEG Document JVT-I049,ISO/IEC and ITU-T,2003年 9月,URL,http://ftp3.itu.ch/av-arch/jvt-site/2003_09_Sandiego/JVT-I049d0.doc
Mathias WIEN and Achim Dahlhoff,Hybrid Video Coding using Variable Size Block Transforms,Proceedings of SPIE: Visual Communications and Image Processing 2002,SPIE,2002年,Vol.4671,p.1040-1051
Gary Sullivan, Thomas Wiegand and Keng-Pang Lim,Joint Model Reference Encoding Methods and Decoding Concealment Methods, DRAFT INTERNATIONAL STANDARD STUDY OF ISO/IEC 14496-5/PDAM6:2003, DRAFT ITU-T Rec.H.??? DRAFT ITU-T RECOMMENDATION,Joint Video Team(JVT) of ISO/IEC MPEG and ITU-T VCEG Document JVT-I049,ISO/IEC and ITU-T,2003年 9月,URL,http://ftp3.itu.ch/av-arch/jvt-site/2003_09_Sandiego/JVT-I049d0.doc
Attorney, Agent or Firm:
Kato Asamichi