WO2010043996A3 - Amélioration de contraste d'images - Google Patents

Amélioration de contraste d'images Download PDF

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Publication number
WO2010043996A3
WO2010043996A3 PCT/IB2009/054336 IB2009054336W WO2010043996A3 WO 2010043996 A3 WO2010043996 A3 WO 2010043996A3 IB 2009054336 W IB2009054336 W IB 2009054336W WO 2010043996 A3 WO2010043996 A3 WO 2010043996A3
Authority
WO
WIPO (PCT)
Prior art keywords
color
contrast enhancement
image
luminance
values
Prior art date
Application number
PCT/IB2009/054336
Other languages
English (en)
Other versions
WO2010043996A2 (fr
Inventor
Erno H. A. Langendijk
Remco T. J. Muijs
Harold A. W. Schmeitz
Leo J. Velthoven
Original Assignee
Koninklijke Philips Electronics N.V.
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 Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Priority to JP2011530603A priority Critical patent/JP2012505460A/ja
Priority to EP09787357A priority patent/EP2347571A2/fr
Priority to CN2009801406240A priority patent/CN102187657A/zh
Publication of WO2010043996A2 publication Critical patent/WO2010043996A2/fr
Publication of WO2010043996A3 publication Critical patent/WO2010043996A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6027—Correction or control of colour gradation or colour contrast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)

Abstract

Un appareil est conçu pour permettre une amélioration du contraste d'une ou plusieurs images en couleurs. L'appareil comprend une source d'image (101) qui transmet l'image en couleurs ayant des valeurs de couleurs relatives à des régions de l'image, chaque région de l'image pouvant correspondre en particulier à un pixel. Un processeur d'amélioration de contraste (103) met en œuvre une amélioration de contraste sur l'image en couleurs en modifiant une caractéristique de luminance relative à au moins certaines régions de l'image en réponse à la valeur de la couleur relative à la région de l'image. En particulier, le processeur d'amélioration de contraste (103) peut produire des valeurs de luminance compensée relatives à des pixels en normalisant les valeurs de luminance par rapport à une valeur de luminance nominale relative à la couleur des pixels. Une amélioration de contraste de luminance est alors exécutée sur les valeurs de luminance compensée. L'approche peut permettre une qualité d'image améliorée et peut, en particulier, réduire l'apparition d'effets d'ombre artificiels dus à des variations de couleurs.
PCT/IB2009/054336 2008-10-13 2009-10-05 Amélioration de contraste d'images WO2010043996A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2011530603A JP2012505460A (ja) 2008-10-13 2009-10-05 画像のコントラスト強調
EP09787357A EP2347571A2 (fr) 2008-10-13 2009-10-05 Amélioration de contraste d'images
CN2009801406240A CN102187657A (zh) 2008-10-13 2009-10-05 图像的对比度增强

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08166453 2008-10-13
EP08166453.4 2008-10-13

Publications (2)

Publication Number Publication Date
WO2010043996A2 WO2010043996A2 (fr) 2010-04-22
WO2010043996A3 true WO2010043996A3 (fr) 2010-09-30

Family

ID=41651153

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/054336 WO2010043996A2 (fr) 2008-10-13 2009-10-05 Amélioration de contraste d'images

Country Status (5)

Country Link
EP (1) EP2347571A2 (fr)
JP (1) JP2012505460A (fr)
KR (1) KR20110083663A (fr)
CN (1) CN102187657A (fr)
WO (1) WO2010043996A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105338214A (zh) * 2014-08-13 2016-02-17 山东新北洋信息技术股份有限公司 图像处理方法和图像处理装置

Families Citing this family (9)

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Publication number Priority date Publication date Assignee Title
KR20120091578A (ko) * 2011-02-09 2012-08-20 삼성전자주식회사 영상의 밝기 변환 방법 및 장치
CN106095358B (zh) * 2011-12-06 2019-05-14 杜比实验室特许公司 改进不同显示能力之间基于感知照度非线性的图像数据交换的装置和方法
US10242650B2 (en) 2011-12-06 2019-03-26 Dolby Laboratories Licensing Corporation Perceptual luminance nonlinearity-based image data exchange across different display capabilities
WO2016044832A1 (fr) * 2014-09-19 2016-03-24 Barco N.V. Procédé pour améliorer le contraste à artefacts visuels réduits
CN106815587B (zh) * 2015-11-30 2019-10-18 浙江宇视科技有限公司 图像处理方法及装置
CN105427265B (zh) * 2015-12-25 2018-05-29 武汉鸿瑞达信息技术有限公司 一种彩色图像对比度增强方法及系统
WO2018217933A1 (fr) 2017-05-25 2018-11-29 FlowJo, LLC Visualisation, analyse comparative et détection de différences automatisée pour ensembles de données multi-paramètres de grande taille
CN110728618B (zh) * 2018-07-17 2023-06-27 淘宝（中国）软件有限公司 虚拟试妆的方法、装置、设备及图像处理方法
CN115803802A (zh) * 2020-06-30 2023-03-14 杜比实验室特许公司 用于使用pq偏移进行环境光补偿的系统和方法

Citations (2)

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Publication number Priority date Publication date Assignee Title
US20040042680A1 (en) * 2002-08-29 2004-03-04 Palo Alto Research Center, Incorporated. System and method for enhancement of document images
US20050276470A1 (en) * 2004-06-09 2005-12-15 Moon-Cheol Kim Saturation-adaptive image enhancement apparatus and method

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JP3947956B2 (ja) * 2001-08-06 2007-07-25 セイコーエプソン株式会社 モノクロ画像データ生成装置、モノクロ画像データ生成方法およびモノクロ画像データ生成プログラム
JP4021261B2 (ja) * 2002-07-08 2007-12-12 松下電器産業株式会社 画像処理装置
WO2006137361A1 (fr) * 2005-06-20 2006-12-28 Nikon Corporation Dispositif et procédé de traitement d’image, produit pour programme de traitement d’image, et dispositif d’imagerie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040042680A1 (en) * 2002-08-29 2004-03-04 Palo Alto Research Center, Incorporated. System and method for enhancement of document images
US20050276470A1 (en) * 2004-06-09 2005-12-15 Moon-Cheol Kim Saturation-adaptive image enhancement apparatus and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J. B. MARTINKAUPPI, M. N. SORIANO, AND M. H.LAAKSONEN.: "Behavior of skin color under varyingillumination seen by different cameras at differentcolor spaces.", PROC. OF SPIE VOL. 4301, MACHINEVISION APPLICATIONS IN INDUSTRIAL INSPECTION IX,, vol. 4301, 22 January 2001 (2001-01-22), pages 102 - 113, XP007911969, Retrieved from the Internet <URL:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.16.2442> [retrieved on 20100301] *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105338214A (zh) * 2014-08-13 2016-02-17 山东新北洋信息技术股份有限公司 图像处理方法和图像处理装置
CN105338214B (zh) * 2014-08-13 2018-07-20 山东新北洋信息技术股份有限公司 图像处理方法和图像处理装置

Also Published As

Publication number Publication date
JP2012505460A (ja) 2012-03-01
EP2347571A2 (fr) 2011-07-27
CN102187657A (zh) 2011-09-14
WO2010043996A2 (fr) 2010-04-22
KR20110083663A (ko) 2011-07-20

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