KR101205273B1 - 명암 향상을 위한 히스토그램-모델링 기반 알고리즘 - Google Patents

명암 향상을 위한 히스토그램-모델링 기반 알고리즘 Download PDF

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Publication number
KR101205273B1
KR101205273B1 KR1020107017658A KR20107017658A KR101205273B1 KR 101205273 B1 KR101205273 B1 KR 101205273B1 KR 1020107017658 A KR1020107017658 A KR 1020107017658A KR 20107017658 A KR20107017658 A KR 20107017658A KR 101205273 B1 KR101205273 B1 KR 101205273B1
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South Korea
Prior art keywords
histogram
image
spread
contrast
determining
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KR1020107017658A
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Korean (ko)
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KR20100101174A (ko
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잉용 퀴
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콸콤 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)
KR1020107017658A 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘 Expired - Fee Related KR101205273B1 (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 US8457399B2 (en) 2008-01-17 2008-07-08 Histogram-modeling based algorithm for contrast enhancement
US12/169,439 2008-07-08
PCT/US2009/031304 WO2009092018A1 (en) 2008-01-17 2009-01-16 A histogram-modeling based algorithm for contrast enhancement

Related Child Applications (1)

Application Number Title Priority Date Filing Date
KR1020127011702A Division KR101239246B1 (ko) 2008-01-17 2009-01-16 명암 향상을 위한 히스토그램-모델링 기반 알고리즘

Publications (2)

Publication Number Publication Date
KR20100101174A KR20100101174A (ko) 2010-09-16
KR101205273B1 true KR101205273B1 (ko) 2012-11-27

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

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

Country Status (7)

Country Link
US (1) US8457399B2 (https=)
EP (1) EP2229768A1 (https=)
JP (1) JP5102370B2 (https=)
KR (2) KR101205273B1 (https=)
CN (1) CN101897173B (https=)
TW (1) TW201002045A (https=)
WO (1) WO2009092018A1 (https=)

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

Family Cites Families (5)

* 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
EP1345172A1 (en) * 2002-02-26 2003-09-17 Sony International (Europe) GmbH Contrast enhancement for digital images

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Buades et al, "Image enhancement by non-local reverse heat equation" Technical report 22, CMLA(2006)

Also Published As

Publication number Publication date
KR101239246B1 (ko) 2013-03-18
KR20100101174A (ko) 2010-09-16
WO2009092018A1 (en) 2009-07-23
KR20120051103A (ko) 2012-05-21
US20090185743A1 (en) 2009-07-23
TW201002045A (en) 2010-01-01
CN101897173B (zh) 2012-12-05
JP5102370B2 (ja) 2012-12-19
EP2229768A1 (en) 2010-09-22
CN101897173A (zh) 2010-11-24
US8457399B2 (en) 2013-06-04
JP2011514030A (ja) 2011-04-28

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