WO2008120433A1 - 逆量子化回路、逆量子化方法及び画像再生装置 - Google Patents

逆量子化回路、逆量子化方法及び画像再生装置 Download PDF

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Publication number
WO2008120433A1
WO2008120433A1 PCT/JP2008/000345 JP2008000345W WO2008120433A1 WO 2008120433 A1 WO2008120433 A1 WO 2008120433A1 JP 2008000345 W JP2008000345 W JP 2008000345W WO 2008120433 A1 WO2008120433 A1 WO 2008120433A1
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WO
WIPO (PCT)
Prior art keywords
multiplier
dequantization
generation part
shift
shift quantity
Prior art date
Application number
PCT/JP2008/000345
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English (en)
French (fr)
Inventor
Naoki Yoshimatsu
Original Assignee
Panasonic Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to EP08710498A priority Critical patent/EP2081387A4/en
Priority to CN200880001139.0A priority patent/CN101569200B/zh
Priority to US12/438,927 priority patent/US8401073B2/en
Priority to JP2009507398A priority patent/JP5352448B2/ja
Publication of WO2008120433A1 publication Critical patent/WO2008120433A1/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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • 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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • 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
    • H04N19/18—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 set of transform coefficients
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

　単一回路で各種の符号化方式に対応した逆量子化を行うことができる汎用性の高い逆量子化回路、逆量子化方法及び画像再生装置を提供する。 　第１の乗算値生成部１０は、第１の乗算値Ｍ１を生成し、第２の乗算値生成部２０は、第２の乗算値Ｍ２を生成し、シフト量生成部１８０は、ビットシフト量を示すシフト量データＳＦを生成し、乗算処理部１４０は、第１の乗算値Ｍ１及び第２の乗算値Ｍ２を量子化係数データＣＤに乗算し、シフト処理部１７０は、シフト量データＳＦに応じてビットシフト演算を行い、乗算処理部１４０及びシフト処理部１７０のうちの少なくとも１つは、演算処理を行うか否かを符号化方式に応じて決定し、第１の乗算値生成部１０、第２の乗算値生成部２０及びシフト量生成部１８０のうちの少なくとも１つは、生成する値又は値の生成方法を符号化方式に応じて決定する。
PCT/JP2008/000345 2007-03-28 2008-02-26 逆量子化回路、逆量子化方法及び画像再生装置 WO2008120433A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08710498A EP2081387A4 (en) 2007-03-28 2008-02-26 DEQUANTIZATION CIRCUIT, DEBURRENT PROCESSING AND IMAGE PLAYING DEVICE
CN200880001139.0A CN101569200B (zh) 2007-03-28 2008-02-26 逆量子化电路、逆量子化方法及图像再生装置
US12/438,927 US8401073B2 (en) 2007-03-28 2008-02-26 Inverse quantization circuit, inverse quantization method and image reproducing apparatus
JP2009507398A JP5352448B2 (ja) 2007-03-28 2008-02-26 逆量子化回路、逆量子化方法及び画像再生装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-083751 2007-03-28
JP2007083751 2007-03-28

Publications (1)

Publication Number Publication Date
WO2008120433A1 true WO2008120433A1 (ja) 2008-10-09

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Country Status (5)

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US (1) US8401073B2 (ja)
EP (1) EP2081387A4 (ja)
JP (1) JP5352448B2 (ja)
CN (1) CN101569200B (ja)
WO (1) WO2008120433A1 (ja)

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WO2012099266A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform with inverse transform clipping
WO2012099267A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform with multiple clipping
WO2012099270A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform including clipping
WO2012099269A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform with inverse transform shifting memory
WO2012099268A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform with memory storing
WO2012124787A1 (en) * 2011-03-11 2012-09-20 Sharp Kabushiki Kaisha A method for decoding video
JP2015164332A (ja) * 2011-06-30 2015-09-10 サムスン エレクトロニクス カンパニー リミテッド 固定小数点変換のためのビット深度調節を伴うビデオ符号化方法及びその装置、並びにビデオ復号化方法及びその装置
KR20170108112A (ko) * 2015-01-29 2017-09-26 브이아이디 스케일, 인크. 팔레트 코딩 모드를 위한 이스케이프 컬러 코딩
JP7583075B2 (ja) 2011-01-18 2024-11-13 ドルビー・インターナショナル・アーベー 動画像を符号化および復号する方法、並びに復号装置

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US20120314775A1 (en) * 2011-06-08 2012-12-13 Vixs Systems, Inc. Video decoder with transposing vector processor and methods for use therewith
US20130083845A1 (en) * 2011-09-30 2013-04-04 Research In Motion Limited Methods and devices for data compression using a non-uniform reconstruction space
WO2015188025A1 (en) 2014-06-06 2015-12-10 Microsoft Technology Licensing, Llc Quantum algorithms for arithmetic and function synthesis
EP3205098B1 (en) * 2014-10-06 2020-01-08 Telefonaktiebolaget LM Ericsson (publ) Coding and deriving quantization parameters
CN107066234B (zh) * 2017-04-21 2020-05-26 重庆邮电大学 一种量子乘法器的设计方法
GB2623002B (en) * 2019-07-05 2024-06-26 V Nova Int Ltd Quantization of residuals in video coding

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JP7583075B2 (ja) 2011-01-18 2024-11-13 ドルビー・インターナショナル・アーベー 動画像を符号化および復号する方法、並びに復号装置
WO2012099268A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform with memory storing
US10958910B2 (en) 2011-01-18 2021-03-23 Dolby International Ab Video decoder with reduced dynamic range transform with inverse transform shifting memory
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JP2014504046A (ja) * 2011-01-18 2014-02-13 シャープ株式会社 逆変換シフトメモリにより削減されたダイナミックレンジ変換を行う動画像復号装置
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WO2012099270A1 (en) * 2011-01-18 2012-07-26 Sharp Kabushiki Kaisha Video decoder with reduced dynamic range transform including clipping
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JP2019080352A (ja) * 2011-01-18 2019-05-23 ドルビー・インターナショナル・アーベー 逆変換シフトメモリにより削減されたダイナミックレンジ変換を行う動画像を復号する方法
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JP7225449B2 (ja) 2011-01-18 2023-02-20 ドルビー・インターナショナル・アーベー 逆変換シフトメモリにより削減されたダイナミックレンジ変換を行う動画像を復号する方法
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JP2017130982A (ja) * 2011-06-30 2017-07-27 サムスン エレクトロニクス カンパニー リミテッド 固定小数点変換のためのビット深度調節を伴うビデオ符号化方法及びその装置、並びにビデオ復号化方法及びその装置
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KR102051723B1 (ko) 2015-01-29 2019-12-03 브이아이디 스케일, 인크. 팔레트 코딩 모드를 위한 이스케이프 컬러 코딩
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CN111601110B (zh) * 2015-01-29 2023-11-07 Vid拓展公司 用于调色编码模式的逃逸色彩编码
CN107211134A (zh) * 2015-01-29 2017-09-26 Vid拓展公司 用于调色编码模式的逃逸色彩编码
KR20170108112A (ko) * 2015-01-29 2017-09-26 브이아이디 스케일, 인크. 팔레트 코딩 모드를 위한 이스케이프 컬러 코딩

Also Published As

Publication number Publication date
EP2081387A1 (en) 2009-07-22
JP5352448B2 (ja) 2013-11-27
US8401073B2 (en) 2013-03-19
CN101569200A (zh) 2009-10-28
US20100014582A1 (en) 2010-01-21
CN101569200B (zh) 2011-11-02
EP2081387A4 (en) 2011-08-31
JPWO2008120433A1 (ja) 2010-07-15
EP2081387A8 (en) 2009-09-23

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