TW201002045A - A histogram-modeling based algorithm for contrast enhancement - Google Patents

A histogram-modeling based algorithm for contrast enhancement Download PDF

Info

Publication number
TW201002045A
TW201002045A TW098101825A TW98101825A TW201002045A TW 201002045 A TW201002045 A TW 201002045A TW 098101825 A TW098101825 A TW 098101825A TW 98101825 A TW98101825 A TW 98101825A TW 201002045 A TW201002045 A TW 201002045A
Authority
TW
Taiwan
Prior art keywords
histogram
extended
image
model
rti
Prior art date
Application number
TW098101825A
Other languages
English (en)
Chinese (zh)
Inventor
Yingyong Qi
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of TW201002045A publication Critical patent/TW201002045A/zh

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
    • H04N1/40—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]

Landscapes

  • 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)
TW098101825A 2008-01-17 2009-01-17 A histogram-modeling based algorithm for contrast enhancement TW201002045A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US2183108P 2008-01-17 2008-01-17
US12/169,439 US8457399B2 (en) 2008-01-17 2008-07-08 Histogram-modeling based algorithm for contrast enhancement

Publications (1)

Publication Number Publication Date
TW201002045A true TW201002045A (en) 2010-01-01

Family

ID=40876549

Family Applications (1)

Application Number Title Priority Date Filing Date
TW098101825A TW201002045A (en) 2008-01-17 2009-01-17 A histogram-modeling based algorithm for contrast enhancement

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

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

Also Published As

Publication number Publication date
EP2229768A1 (en) 2010-09-22
JP5102370B2 (ja) 2012-12-19
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
KR101239246B1 (ko) 2013-03-18
KR101205273B1 (ko) 2012-11-27
CN101897173A (zh) 2010-11-24
US8457399B2 (en) 2013-06-04
KR20120051103A (ko) 2012-05-21

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