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WO2008123254A1 - 画像符号化方法及び装置並びに画像復号化方法及び装置 - Google Patents

画像符号化方法及び装置並びに画像復号化方法及び装置 Download PDF

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Publication number
WO2008123254A1
WO2008123254A1 PCT/JP2008/055588 JP2008055588W WO2008123254A1 WO 2008123254 A1 WO2008123254 A1 WO 2008123254A1 JP 2008055588 W JP2008055588 W JP 2008055588W WO 2008123254 A1 WO2008123254 A1 WO 2008123254A1
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Prior art keywords
predicted
mode
image signal
information table
frequency information
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PCT/JP2008/055588
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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
Publication of WO2008123254A1 publication Critical patent/WO2008123254A1/ja

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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
    • H04N19/189—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
    • H04N19/19—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 using optimisation based on Lagrange multipliers
    • 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
    • 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

　画像符号化方法は入力画像信号を複数の画素ブロックに分割し、１つ以上の予測モードの中から各画素ブロックの予測モードを選択し、選択予測モードに従って参照画像信号から画素ブロックのそれぞれの予測画像信号を生成し、画素ブロックと予測画像信号とを用いて予測誤差信号を生成し、予測誤差信号を直交変換および量子化して量子化変換信号を生成し、１つ以上の予測モードのそれぞれを示すモード情報を記憶する頻度情報テーブルを参照して、頻度情報テーブル内で選択予測モードに対応するモード情報が記憶された位置を示す順番情報を求め、量子化変換信号と順番情報とを符号化し、選択予測モードに対応するモード情報を頻度情報テーブルの先頭に配置することにより頻度情報テーブルを並べ替えるステップを含む。
PCT/JP2008/055588 2007-03-29 2008-03-25 画像符号化方法及び装置並びに画像復号化方法及び装置 WO2008123254A1 (ja)

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JP2007087202A JP2010135864A (ja) 2007-03-29 2007-03-29 画像符号化方法及び装置並びに画像復号化方法及び装置
JP2007-087202 2007-03-29

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WO2011125314A1 (ja) * 2010-04-09 2011-10-13 三菱電機株式会社 動画像符号化装置および動画像復号装置
JP2012517186A (ja) * 2009-02-05 2012-07-26 トムソン ライセンシング 適応型のモード・ビデオ符号化および復号を行うための方法および装置
JPWO2010095558A1 (ja) * 2009-02-19 2012-08-23 ソニー株式会社 画像処理装置および方法
JPWO2010095557A1 (ja) * 2009-02-19 2012-08-23 ソニー株式会社 画像処理装置および方法
JPWO2010095556A1 (ja) * 2009-02-19 2012-08-23 ソニー株式会社 画像処理装置および方法
JP2015516780A (ja) * 2012-05-09 2015-06-11 マグナム セミコンダクター， インコーポレイテッド ビットストリームのビット数を推定するための装置および方法
US9462271B2 (en) 2010-07-15 2016-10-04 Mitsubishi Electric Corporation Moving image encoding device, moving image decoding device, moving image coding method, and moving image decoding method
EP3101897A1 (en) * 2010-04-09 2016-12-07 Mitsubishi Electric Corporation Moving image encoding device and moving image decoding device
WO2021032110A1 (en) * 2019-08-19 2021-02-25 Beijing Bytedance Network Technology Co., Ltd. Counter-based intra prediction mode
CN112956199A (zh) * 2018-11-06 2021-06-11 北京字节跳动网络技术有限公司 帧内预测的简化参数推导
US11438581B2 (en) 2019-03-24 2022-09-06 Beijing Bytedance Network Technology Co., Ltd. Conditions in parameter derivation for intra prediction
US11595687B2 (en) 2018-12-07 2023-02-28 Beijing Bytedance Network Technology Co., Ltd. Context-based intra prediction
US11729405B2 (en) 2019-02-24 2023-08-15 Beijing Bytedance Network Technology Co., Ltd. Parameter derivation for intra prediction
US11902507B2 (en) 2018-12-01 2024-02-13 Beijing Bytedance Network Technology Co., Ltd Parameter derivation for intra prediction
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US12184865B2 (en) 2018-11-06 2024-12-31 Beijing Bytedance Network Technology Co., Ltd. Multi-parameters based intra prediction
CN112956199A (zh) * 2018-11-06 2021-06-11 北京字节跳动网络技术有限公司 帧内预测的简化参数推导
US11930185B2 (en) 2018-11-06 2024-03-12 Beijing Bytedance Network Technology Co., Ltd. Multi-parameters based intra prediction
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