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WO2008084817A1 - 画像符号化と復号化の方法及び装置 - Google Patents

画像符号化と復号化の方法及び装置 Download PDF

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Publication number
WO2008084817A1
WO2008084817A1 PCT/JP2008/050158 JP2008050158W WO2008084817A1 WO 2008084817 A1 WO2008084817 A1 WO 2008084817A1 JP 2008050158 W JP2008050158 W JP 2008050158W WO 2008084817 A1 WO2008084817 A1 WO 2008084817A1
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WO
WIPO (PCT)
Prior art keywords
prediction
pixel
plural
pixel blocks
generate
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Ceased
Application number
PCT/JP2008/050158
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English (en)
French (fr)
Inventor
Taichiro Shiodera
Akiyuki Tanizawa
Takeshi Chujoh
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Toshiba Corp
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Toshiba Corp
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Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to US12/522,614 priority Critical patent/US20100118943A1/en
Priority to EP08703029A priority patent/EP2136564A1/en
Priority to JP2008553107A priority patent/JPWO2008084817A1/ja
Publication of WO2008084817A1 publication Critical patent/WO2008084817A1/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
    • H04N19/10—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
    • H04N19/182—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 a pixel
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

画像符号化装置は、入力画像信号のフレームを分割した複数の画素ブロック毎に該画素ブロックに対応する複数の第１予測信号を生成するために、予測方向の異なる複数の予測モードに従って、符号化済み画素を参照画素に用いて前記画素ブロックを予測するように構成される複数方向予測部；前記複数の予測モードの予測方向と、前記画素ブロック中の予測画素と前記参照画素との間の空間的距離とに応じて重み係数を設定するように構成される設定部；前記画素ブロックに対応する一つの第２予測信号を生成するために、前記複数の第１予測信号を前記重み係数に従って加重平均するように構成される加重平均部；及び 符号化データを生成するために、前記画素ブロックの画像信号と、少なくとも前記第２予測信号との差を表す予測残差信号を符号化するように構成される符号化部；を有する。
PCT/JP2008/050158 2007-01-09 2008-01-09 画像符号化と復号化の方法及び装置 Ceased WO2008084817A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/522,614 US20100118943A1 (en) 2007-01-09 2008-01-09 Method and apparatus for encoding and decoding image
EP08703029A EP2136564A1 (en) 2007-01-09 2008-01-09 Image encoding and decoding method and device
JP2008553107A JPWO2008084817A1 (ja) 2007-01-09 2008-01-09 画像符号化と復号化の方法及び装置

Applications Claiming Priority (6)

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JP2007-001835 2007-01-09
JP2007001835 2007-01-09
JP2007-107499 2007-04-16
JP2007107499 2007-04-16
JP2007265957 2007-10-11
JP2007-265957 2007-10-11

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WO2008084817A1 true WO2008084817A1 (ja) 2008-07-17

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EP (1) EP2136564A1 (ja)
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WO (1) WO2008084817A1 (ja)

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