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WO2009001793A1 - 画像符号化と画像復号化の方法及び装置 - Google Patents

画像符号化と画像復号化の方法及び装置 Download PDF

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Publication number
WO2009001793A1
WO2009001793A1 PCT/JP2008/061412 JP2008061412W WO2009001793A1 WO 2009001793 A1 WO2009001793 A1 WO 2009001793A1 JP 2008061412 W JP2008061412 W JP 2008061412W WO 2009001793 A1 WO2009001793 A1 WO 2009001793A1
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WIPO (PCT)
Prior art keywords
image signal
prediction
prediction error
generate
complexity
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PCT/JP2008/061412
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English (en)
French (fr)
Inventor
Akiyuki Tanizawa
Taichiro Shiodera
Takeshi Chujoh
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Kabushiki Kaisha Toshiba
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Application filed by Kabushiki Kaisha Toshiba filed Critical Kabushiki Kaisha Toshiba
Priority to JP2009520576A priority Critical patent/JPWO2009001793A1/ja
Publication of WO2009001793A1 publication Critical patent/WO2009001793A1/ja
Priority to US12/647,112 priority patent/US20100135389A1/en

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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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
    • 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
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • 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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame 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
    • H04N19/169—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
    • H04N19/60—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
    • 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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop

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

Abstract

　画像符号化装置は、予測画像信号を生成するために入力画像信号の対象ブロックに対して参照画像信号を用いて予測処理を行う予測部と、予測画像信号の予測誤差を算出する算出部と、予測誤差信号に対して変換及び量子化を行う変換／量子化部と、量子化変換係数に対してエントロピー符号化を行う符号化部と、復号予測誤差信号を生成するために量子化変換係数に対して逆量子化及び逆変換を行う逆量子化／逆変換部と、して局部復号画像信号を生成するために予測画像信号と復号予測画像信号を加算する加算部と、予測処理の複雑度合いを示す予測複雑度を導出し、フィルタリング強度を予測複雑度が高いほど弱くなるように決定する決定部と、フィルタリング強度に従って局部復号画像信号に対してデブロッキングフィルタ処理を行うフィルタ部と、デブロッキングフィルタ処理後の局部復号画像信号を参照画像信号として用いるために記憶する記憶部を有する。
PCT/JP2008/061412 2007-06-26 2008-06-23 画像符号化と画像復号化の方法及び装置 WO2009001793A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009520576A JPWO2009001793A1 (ja) 2007-06-26 2008-06-23 画像符号化と画像復号化の方法及び装置
US12/647,112 US20100135389A1 (en) 2007-06-26 2009-12-24 Method and apparatus for image encoding and image decoding

Applications Claiming Priority (2)

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JP2007168119 2007-06-26
JP2007-168119 2007-06-26

Related Child Applications (1)

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US12/647,112 Continuation US20100135389A1 (en) 2007-06-26 2009-12-24 Method and apparatus for image encoding and image decoding

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JP (1) JPWO2009001793A1 (ja)
TW (1) TW200913724A (ja)
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WO2011125729A1 (ja) * 2010-04-09 2011-10-13 ソニー株式会社 画像処理装置と画像処理方法
WO2011145601A1 (ja) * 2010-05-18 2011-11-24 ソニー株式会社 画像処理装置と画像処理方法
WO2012029181A1 (ja) * 2010-09-03 2012-03-08 株式会社 東芝 動画像符号化方法及び復号化方法、符号化装置及び復号化装置
JP2012520603A (ja) * 2009-03-13 2012-09-06 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 符号化ビット・ストリームの処理方法及び装置
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WO2012177015A3 (ko) * 2011-06-20 2013-04-04 엘지전자 주식회사 영상 부호화/복호화 방법 및 그 장치
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