KR101239246B1 - 명암 향상을 위한 히스토그램-모델링 기반 알고리즘 - Google Patents

명암 향상을 위한 히스토그램-모델링 기반 알고리즘 Download PDF

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Publication number
KR101239246B1
KR101239246B1 KR1020127011702A KR20127011702A KR101239246B1 KR 101239246 B1 KR101239246 B1 KR 101239246B1 KR 1020127011702 A KR1020127011702 A KR 1020127011702A KR 20127011702 A KR20127011702 A KR 20127011702A KR 101239246 B1 KR101239246 B1 KR 101239246B1
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South Korea
Prior art keywords
histogram
image
spread
contrast
improving
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Korean (ko)
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KR20120051103A (ko
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잉용 퀴
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퀄컴 인코포레이티드
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    • 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
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
    • H04N1/4074—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original using histograms
    • 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/10—Image enhancement or restoration using non-spatial domain filtering
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20048—Transform domain processing
    • G06T2207/20056—Discrete and fast Fourier transform, [DFT, FFT]

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • User Interface Of Digital Computer (AREA)
KR1020127011702A 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘 Expired - Fee Related KR101239246B1 (ko)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US2183108P 2008-01-17 2008-01-17
US61/021,831 2008-01-17
US12/169,439 2008-07-08
US12/169,439 US8457399B2 (en) 2008-01-17 2008-07-08 Histogram-modeling based algorithm for contrast enhancement
PCT/US2009/031304 WO2009092018A1 (en) 2008-01-17 2009-01-16 A histogram-modeling based algorithm for contrast enhancement

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
KR1020107017658A Division KR101205273B1 (ko) 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘

Publications (2)

Publication Number Publication Date
KR20120051103A KR20120051103A (ko) 2012-05-21
KR101239246B1 true KR101239246B1 (ko) 2013-03-18

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KR1020127011702A Expired - Fee Related KR101239246B1 (ko) 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘
KR1020107017658A Expired - Fee Related KR101205273B1 (ko) 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘

Family Applications After (1)

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KR1020107017658A Expired - Fee Related KR101205273B1 (ko) 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘

Country Status (7)

Country Link
US (1) US8457399B2 (enExample)
EP (1) EP2229768A1 (enExample)
JP (1) JP5102370B2 (enExample)
KR (2) KR101239246B1 (enExample)
CN (1) CN101897173B (enExample)
TW (1) TW201002045A (enExample)
WO (1) WO2009092018A1 (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10645346B2 (en) 2013-01-18 2020-05-05 Careview Communications, Inc. Patient video monitoring systems and methods having detection algorithm recovery from changes in illumination
TWI408619B (zh) * 2009-11-16 2013-09-11 Inst Information Industry 影像對比提昇裝置及其方法
CN101707666A (zh) * 2009-11-26 2010-05-12 北京中星微电子有限公司 一种高动态范围的调整方法和装置
US8577141B2 (en) * 2010-11-05 2013-11-05 Lg Innotek Co., Ltd. Method of enhancing contrast using bezier curve
CN102314673B (zh) * 2011-08-02 2013-06-05 中国科学院长春光学精密机械与物理研究所 一种自适应图像增强方法
CN104952052A (zh) * 2014-03-28 2015-09-30 南京理工大学 一种对emccd图像进行增强的方法
CN109003227B (zh) * 2018-06-29 2021-07-27 Tcl华星光电技术有限公司 一种增强对比度的装置及显示器
CN113112435B (zh) * 2020-04-23 2023-09-22 江苏理工学院 一种小波域正反图像融合的可变对比度增强方法及装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7102697B2 (en) * 2002-02-26 2006-09-05 Sony Deutschland Gmbh Contrast enhancement of digital images

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07240166A (ja) 1994-02-25 1995-09-12 Hitachi Ltd 電子顕微鏡
US5581370A (en) 1995-06-05 1996-12-03 Xerox Corporation Image-dependent automatic area of interest enhancement
DE69622379T2 (de) 1996-05-30 2003-02-13 Agfa-Gevaert, Mortsel Erkennung und Korrektur von spiegelnden Reflexionen in der digitalen Bilderfassung
DE60123914T2 (de) 2001-01-05 2007-03-15 Seiko Epson Corp. System und Verfahren zur Bilddatenverarbeitung, Rechnerprogramm zur Durchführung des Verfahrens und Datenträger zur Speicherung des Programms

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7102697B2 (en) * 2002-02-26 2006-09-05 Sony Deutschland Gmbh Contrast enhancement of digital images

Also Published As

Publication number Publication date
EP2229768A1 (en) 2010-09-22
JP5102370B2 (ja) 2012-12-19
TW201002045A (en) 2010-01-01
WO2009092018A1 (en) 2009-07-23
CN101897173B (zh) 2012-12-05
JP2011514030A (ja) 2011-04-28
KR20100101174A (ko) 2010-09-16
US20090185743A1 (en) 2009-07-23
KR101205273B1 (ko) 2012-11-27
CN101897173A (zh) 2010-11-24
US8457399B2 (en) 2013-06-04
KR20120051103A (ko) 2012-05-21

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