WO2009031648A1 - 映像符号化装置、映像復号装置、映像符号化方法、映像復号方法、映像符号化あるいは復号プログラム - Google Patents

映像符号化装置、映像復号装置、映像符号化方法、映像復号方法、映像符号化あるいは復号プログラム Download PDF

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Publication number
WO2009031648A1
WO2009031648A1 PCT/JP2008/066067 JP2008066067W WO2009031648A1 WO 2009031648 A1 WO2009031648 A1 WO 2009031648A1 JP 2008066067 W JP2008066067 W JP 2008066067W WO 2009031648 A1 WO2009031648 A1 WO 2009031648A1
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video
encoding
decoding
video encoding
pcm
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English (en)
French (fr)
Inventor
Keiichi Chono
Yoshihiro Miyamoto
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NEC Corp
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NEC Corp
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Priority to EP08829169A priority Critical patent/EP2197215A4/en
Priority to JP2009531295A priority patent/JP5278827B2/ja
Priority to US12/676,207 priority patent/US9521433B2/en
Priority to KR1020107007514A priority patent/KR101148614B1/ko
Priority to CN200880115036.7A priority patent/CN101933331B/zh
Publication of WO2009031648A1 publication Critical patent/WO2009031648A1/ja
Anticipated expiration legal-status Critical
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    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/93—Run-length coding
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • 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
    • H04N19/20—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding
    • H04N19/21—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video object coding with binary alpha-plane coding for video objects, e.g. context-based arithmetic encoding [CAE]
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

課題　コンテキスト適応符号化においてシンボル生起確率の急激な変動による圧縮効率低下を防止できる映像符号化装置、映像符号化方法、映像符号化プログラム、また、対応する映像復号装置、映像復号方法、復号プログラムを得ること。 解決手段　映像データ１０１をマクロブロック単位で入力され、量子化した後の符号データ１２３はＰＣＭ判定器１３９でＰＣＭモードであるか判定される。コンテキスト更新器３０１はＰＣＭ選択時にコンテキスト更新処理を行い、２値算術符号化の効率が改善される。第３のスイッチ１４８はＰＣＭモード非選択の有無によって２値算術符号化あるいはＰＣＭ符号化後の出力を切り替える。  
PCT/JP2008/066067 2007-09-06 2008-09-05 映像符号化装置、映像復号装置、映像符号化方法、映像復号方法、映像符号化あるいは復号プログラム Ceased WO2009031648A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP08829169A EP2197215A4 (en) 2007-09-06 2008-09-05 VIDEO ENCODING DEVICE, VIDEO DECODING DEVICE, VIDEO ENCODING METHOD, VIDEO DECODING METHOD, AND VIDEO ENCODING OR DECODING PROGRAM
JP2009531295A JP5278827B2 (ja) 2007-09-06 2008-09-05 映像符号化装置、映像復号装置、映像符号化方法、映像復号方法、映像符号化あるいは復号プログラム
US12/676,207 US9521433B2 (en) 2007-09-06 2008-09-05 Video encoding device, video decoding device, video encoding method, video decoding method, video encoding or decoding program
KR1020107007514A KR101148614B1 (ko) 2007-09-06 2008-09-05 영상 부호화 장치 및 영상 부호화 방법
CN200880115036.7A CN101933331B (zh) 2007-09-06 2008-09-05 视频编码装置、视频编码方法、视频解码方法

Applications Claiming Priority (2)

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JP2007231478 2007-09-06
JP2007-231478 2007-09-06

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WO2009031648A1 true WO2009031648A1 (ja) 2009-03-12

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US (1) US9521433B2 (ja)
EP (1) EP2197215A4 (ja)
JP (1) JP5278827B2 (ja)
KR (1) KR101148614B1 (ja)
CN (1) CN101933331B (ja)
WO (1) WO2009031648A1 (ja)

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JPWO2009031648A1 (ja) 2010-12-16
KR101148614B1 (ko) 2012-05-25
EP2197215A4 (en) 2011-03-23
EP2197215A1 (en) 2010-06-16
KR20100058624A (ko) 2010-06-03
JP5278827B2 (ja) 2013-09-04
CN101933331A (zh) 2010-12-29
CN101933331B (zh) 2014-04-09
US9521433B2 (en) 2016-12-13
US20100177820A1 (en) 2010-07-15

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