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WO2009041215A1 - 動画像符号化装置及び動画像復号装置 - Google Patents

動画像符号化装置及び動画像復号装置 Download PDF

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Publication number
WO2009041215A1
WO2009041215A1 PCT/JP2008/065639 JP2008065639W WO2009041215A1 WO 2009041215 A1 WO2009041215 A1 WO 2009041215A1 JP 2008065639 W JP2008065639 W JP 2008065639W WO 2009041215 A1 WO2009041215 A1 WO 2009041215A1
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Prior art keywords
prediction
moving image
block
image
encoding
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Ceased
Application number
PCT/JP2008/065639
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English (en)
French (fr)
Inventor
Tomohiro Ikai
Tomoko Aono
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Sharp Corp
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Sharp Corp
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Priority to JP2009534251A priority Critical patent/JPWO2009041215A1/ja
Priority to US12/678,963 priority patent/US20100195723A1/en
Priority to EP08832839A priority patent/EP2200323A4/en
Publication of WO2009041215A1 publication Critical patent/WO2009041215A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • 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
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • 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
    • H04N19/10—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
    • H04N19/197—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 including determination of the initial value of an encoding parameter
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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

　複数の参照ブロックを用いて予測ブロックを生成し符号化を行う場合の符号化効率を向上させる。動画像符号化装置は、符号化済みフレームから抽出した複数の参照画像を用いて符号化対象ブロックの予測画像を生成して符号化対象ブロックとの差分値を符号化する画面間予測符号化を行う。動画像符号化装置は、予測方法候補生成部１２０、予測画像生成部、可変長符号化部１０８を備える。予測方法候補生成部１２０は、符号化対象ブロックに関わる所定の情報に基づいて予測方法の候補を生成し、予測画像生成部は、生成された予測方法の候補に基づいて符号化対象ブロックの予測画像を生成する。可変長符号化部１０８は、生成された予測画像を用いて画面間予測符号化を行う場合、予測方法候補生成部１２０が生成した予測方法の候補の数が２以上の場合に、上記予測画像の生成に使用した予測方法を符号化する。
PCT/JP2008/065639 2007-09-25 2008-09-01 動画像符号化装置及び動画像復号装置 Ceased WO2009041215A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2009534251A JPWO2009041215A1 (ja) 2007-09-25 2008-09-01 動画像符号化装置及び動画像復号装置
US12/678,963 US20100195723A1 (en) 2007-09-25 2008-09-01 Moving image encoder and moving image decoder
EP08832839A EP2200323A4 (en) 2007-09-25 2008-09-01 CODES FOR MOVING IMAGES AND DECODERS FOR MOVING IMAGES

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007246852 2007-09-25
JP2007-246852 2007-09-25
JP2007-280402 2007-10-29
JP2007280402 2007-10-29

Publications (1)

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WO2009041215A1 true WO2009041215A1 (ja) 2009-04-02

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US (1) US20100195723A1 (ja)
EP (1) EP2200323A4 (ja)
JP (1) JPWO2009041215A1 (ja)
WO (1) WO2009041215A1 (ja)

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WO2012101781A1 (ja) * 2011-01-26 2012-08-02 株式会社日立製作所 画像復号化装置
CN102972027A (zh) * 2010-05-13 2013-03-13 夏普株式会社 预测图像生成装置、动图像解码装置、以及动图像编码装置
JP2014509116A (ja) * 2011-01-21 2014-04-10 クゥアルコム・インコーポレイテッド 動きベクトル予測
JP2015510357A (ja) * 2012-02-08 2015-04-02 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Ｂスライス中の予測ユニットの単方向インター予測への制限
US9241172B2 (en) 2009-05-11 2016-01-19 Ntt Docomo, Inc. Moving image encoding and decoding device
JP2017060197A (ja) * 2010-09-30 2017-03-23 三菱電機株式会社 動画像復号装置、動画像復号方法、動画像符号化装置、動画像符号化方法、動画像符号化データ及び記録媒体
WO2018037919A1 (ja) * 2016-08-26 2018-03-01 シャープ株式会社 画像復号装置、画像符号化装置、画像復号方法、および画像符号化方法

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KR101348613B1 (ko) 2009-12-23 2014-01-10 한국전자통신연구원 영상의 부호화/복호화 장치 및 그 방법
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WO2018037919A1 (ja) * 2016-08-26 2018-03-01 シャープ株式会社 画像復号装置、画像符号化装置、画像復号方法、および画像符号化方法

Also Published As

Publication number Publication date
EP2200323A1 (en) 2010-06-23
US20100195723A1 (en) 2010-08-05
EP2200323A4 (en) 2012-03-14
JPWO2009041215A1 (ja) 2011-01-20

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