ATE500571T1 - Verbesserung der kompression bei der transkodierung von jpeg-bildern - Google Patents

Verbesserung der kompression bei der transkodierung von jpeg-bildern

Info

Publication number
ATE500571T1
ATE500571T1 AT03798965T AT03798965T ATE500571T1 AT E500571 T1 ATE500571 T1 AT E500571T1 AT 03798965 T AT03798965 T AT 03798965T AT 03798965 T AT03798965 T AT 03798965T AT E500571 T1 ATE500571 T1 AT E500571T1
Authority
AT
Austria
Prior art keywords
data
transcoding
quantization
image data
zero
Prior art date
Application number
AT03798965T
Other languages
English (en)
Inventor
Joan Mitchell
Ravi Prakash
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of ATE500571T1 publication Critical patent/ATE500571T1/de

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Classifications

    • 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
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
  • Panels For Use In Building Construction (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
AT03798965T 2002-10-04 2003-09-12 Verbesserung der kompression bei der transkodierung von jpeg-bildern ATE500571T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/263,653 US7260265B2 (en) 2002-10-04 2002-10-04 Enhancing compression while transcoding JPEG images
PCT/GB2003/003947 WO2004032022A2 (en) 2002-10-04 2003-09-12 Enhancing compression while transcoding jpeg images

Publications (1)

Publication Number Publication Date
ATE500571T1 true ATE500571T1 (de) 2011-03-15

Family

ID=32042041

Family Applications (1)

Application Number Title Priority Date Filing Date
AT03798965T ATE500571T1 (de) 2002-10-04 2003-09-12 Verbesserung der kompression bei der transkodierung von jpeg-bildern

Country Status (12)

Country Link
US (2) US7260265B2 (de)
EP (1) EP1547017B1 (de)
JP (1) JP4072160B2 (de)
KR (1) KR100745429B1 (de)
CN (1) CN100336079C (de)
AT (1) ATE500571T1 (de)
AU (1) AU2003263355A1 (de)
CA (1) CA2498665C (de)
DE (1) DE60336243D1 (de)
PL (1) PL374500A1 (de)
TW (1) TWI234744B (de)
WO (1) WO2004032022A2 (de)

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EP1766783B1 (de) 2004-07-14 2011-11-02 Slipstream Data Inc. Verfahren, system und computerprogramm für die optimierung von datenkomprimierung
US7570827B2 (en) * 2004-07-14 2009-08-04 Slipstream Data Inc. Method, system and computer program product for optimization of data compression with cost function
US7502514B2 (en) * 2004-11-15 2009-03-10 Smith Micro Software, Inc. System and method for lossless compression of already compressed files
JP4034317B2 (ja) * 2005-03-29 2008-01-16 富士通株式会社 画像符号化装置
TWI314424B (en) * 2006-06-23 2009-09-01 Marketech Int Corp System and method for image signal contrast adjustment and overflow compensation
US8260070B1 (en) * 2006-10-03 2012-09-04 Adobe Systems Incorporated Method and system to generate a compressed image utilizing custom probability tables
US8213498B2 (en) * 2007-05-31 2012-07-03 Qualcomm Incorporated Bitrate reduction techniques for image transcoding
CN101923559B (zh) * 2010-03-24 2012-10-10 深圳市万兴软件有限公司 一种图像文件管理方法和系统
TWI521973B (zh) * 2011-04-15 2016-02-11 杜比實驗室特許公司 高動態範圍影像的編碼、解碼及表示
US8334911B2 (en) 2011-04-15 2012-12-18 Dolby Laboratories Licensing Corporation Encoding, decoding, and representing high dynamic range images
JP5523413B2 (ja) * 2011-08-25 2014-06-18 キヤノン株式会社 画像処理装置、画像処理方法及びプログラム
US9111329B2 (en) 2011-12-26 2015-08-18 Samsung Electronics Co., Ltd Method and apparatus for compressing images
JP5642105B2 (ja) * 2012-03-29 2014-12-17 京セラドキュメントソリューションズ株式会社 画像処理装置および画像形成装置
RU2616548C2 (ru) * 2012-10-19 2017-04-17 КОЛЕН, Жан-Клод Обратимый способ преобразования файла, закодированного первым кодированием, в файл, закодированный вторым кодированием
CN103400342A (zh) * 2013-07-04 2013-11-20 西安电子科技大学 基于混合色阶映射及压缩系数的高动态范围图像重构方法
JP2017158183A (ja) * 2016-02-29 2017-09-07 大学共同利用機関法人情報・システム研究機構 画像処理装置
CN114071141A (zh) * 2020-08-06 2022-02-18 华为技术有限公司 一种图像处理方法及其设备
US11871036B2 (en) 2020-09-24 2024-01-09 Korea University Research And Business Foundation Apparatus and method for compressing JPEG images

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Also Published As

Publication number Publication date
CA2498665A1 (en) 2004-04-15
EP1547017A2 (de) 2005-06-29
TWI234744B (en) 2005-06-21
EP1547017B1 (de) 2011-03-02
WO2004032022A2 (en) 2004-04-15
US7260265B2 (en) 2007-08-21
KR20050054927A (ko) 2005-06-10
AU2003263355A8 (en) 2004-04-23
JP4072160B2 (ja) 2008-04-09
CA2498665C (en) 2010-12-14
CN100336079C (zh) 2007-09-05
US20040066973A1 (en) 2004-04-08
JP2006501736A (ja) 2006-01-12
US7813575B2 (en) 2010-10-12
AU2003263355A1 (en) 2004-04-23
TW200419458A (en) 2004-10-01
WO2004032022A3 (en) 2004-08-26
CN1692375A (zh) 2005-11-02
US20070196026A1 (en) 2007-08-23
PL374500A1 (en) 2005-10-31
KR100745429B1 (ko) 2007-08-02
DE60336243D1 (de) 2011-04-14

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