CN1770847B - 自适应对比度增强方法及设备 - Google Patents
自适应对比度增强方法及设备 Download PDFInfo
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- CN1770847B CN1770847B CN2005101249436A CN200510124943A CN1770847B CN 1770847 B CN1770847 B CN 1770847B CN 2005101249436 A CN2005101249436 A CN 2005101249436A CN 200510124943 A CN200510124943 A CN 200510124943A CN 1770847 B CN1770847 B CN 1770847B
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- transfer function
- reference transfer
- brightness
- histogram
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000003044 adaptive effect Effects 0.000 title abstract 2
- 238000012546 transfer Methods 0.000 claims abstract description 90
- 230000002708 enhancing effect Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 description 7
- 239000004744 fabric Substances 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Images
Classifications
-
- 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
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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; CALCULATING OR 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
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/066—Adjustment of display parameters for control of contrast
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Image Processing (AREA)
- Picture Signal Circuits (AREA)
- Facsimile Image Signal Circuits (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
Description
Claims (12)
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US61951804P | 2004-10-15 | 2004-10-15 | |
US60/619518 | 2004-10-15 | ||
US60/619,518 | 2004-10-15 | ||
US11/044755 | 2005-01-26 | ||
US11/044,755 US7760961B2 (en) | 2004-10-15 | 2005-01-26 | Adaptive contrast enhancement |
US11/044,755 | 2005-01-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1770847A CN1770847A (zh) | 2006-05-10 |
CN1770847B true CN1770847B (zh) | 2010-08-04 |
Family
ID=35781454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2005101249436A Active CN1770847B (zh) | 2004-10-15 | 2005-10-14 | 自适应对比度增强方法及设备 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7760961B2 (zh) |
EP (1) | EP1648156B1 (zh) |
JP (1) | JP4616749B2 (zh) |
KR (1) | KR101234958B1 (zh) |
CN (1) | CN1770847B (zh) |
DE (1) | DE602005023821D1 (zh) |
SG (1) | SG121976A1 (zh) |
TW (1) | TWI392377B (zh) |
Families Citing this family (27)
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US7593591B2 (en) * | 2005-08-05 | 2009-09-22 | Seiko Epson Corporation | Method and apparatus for increasing contrast in a digital image |
JP5196731B2 (ja) * | 2006-04-20 | 2013-05-15 | キヤノン株式会社 | 画像処理装置及び画像処理方法 |
JP4264553B2 (ja) * | 2006-06-12 | 2009-05-20 | ソニー株式会社 | 画像処理装置、撮像装置、画像出力装置、これらの装置における方法およびプログラム |
KR100809349B1 (ko) | 2006-09-25 | 2008-03-05 | 삼성전자주식회사 | 이미지의 밝기 보정을 위한 장치 및 방법 |
TWI355856B (en) * | 2006-12-14 | 2012-01-01 | Au Optronics Corp | Method and related apparatus of compensating color |
US8000554B2 (en) * | 2007-04-04 | 2011-08-16 | Xerox Corporation | Automatic dynamic range adjustment in digital imaging |
KR100944595B1 (ko) * | 2007-04-24 | 2010-02-25 | 가부시끼가이샤 르네사스 테크놀로지 | 표시 장치, 표시 장치 구동 회로, 화상 표시 방법, 전자기기 및 화상 표시 장치 구동 회로 |
US8233738B2 (en) | 2007-07-30 | 2012-07-31 | Dolby Laboratories Licensing Corporation | Enhancing dynamic ranges of images |
CN101431637B (zh) * | 2007-11-06 | 2013-06-19 | 奇美电子股份有限公司 | 帧数据处理的装置及方法 |
JP5123713B2 (ja) * | 2008-04-04 | 2013-01-23 | キヤノン株式会社 | 画像処理装置、画像処理方法 |
JP4575501B2 (ja) * | 2009-02-26 | 2010-11-04 | 株式会社東芝 | 映像信号処理装置及びその制御方法及びテレビジョン信号受信装置 |
CN101626454B (zh) * | 2009-04-10 | 2011-01-05 | 黄宝华 | 一种增强视频可视性的方法 |
CN101620727B (zh) * | 2009-08-10 | 2012-05-09 | 电子科技大学 | 红外图像加权直方图自适应增强算法 |
US8457398B2 (en) * | 2009-10-27 | 2013-06-04 | Himax Media Solutions, Inc. | Image enhancement method and apparatuses utilizing the same |
CN101710955B (zh) * | 2009-11-24 | 2014-06-25 | 北京中星微电子有限公司 | 亮度和对比度调整的方法及设备 |
JP2011124800A (ja) * | 2009-12-10 | 2011-06-23 | Sony Corp | 画像処理装置、画像処理方法及びプログラム |
US9055227B2 (en) * | 2010-03-17 | 2015-06-09 | Texas Instruments Incorporated | Scene adaptive brightness/contrast enhancement |
US8881044B2 (en) * | 2011-07-14 | 2014-11-04 | Apple Inc. | Representing ranges of image data at multiple resolutions |
CN103137098B (zh) * | 2011-12-02 | 2015-06-17 | 联咏科技股份有限公司 | 色调对应方法 |
US9008458B2 (en) | 2013-02-07 | 2015-04-14 | Raytheon Company | Local area processing using packed distribution functions |
CN103491312B (zh) * | 2013-09-29 | 2016-06-15 | 武汉虹识技术有限公司 | 一种用于虹膜识别的自动曝光控制方法及装置 |
CN105303586B (zh) * | 2014-07-16 | 2018-05-11 | 深圳Tcl新技术有限公司 | 获取直方图的方法、亮度动态调整的方法及图像处理装置 |
CN104200794B (zh) * | 2014-08-20 | 2017-11-10 | 明基电通有限公司 | 影像调整方法及显示器 |
CN105898369A (zh) * | 2015-12-01 | 2016-08-24 | 乐视云计算有限公司 | 视频画质的调整方法和装置 |
TWI653894B (zh) | 2018-01-05 | 2019-03-11 | 瑞昱半導體股份有限公司 | 影像增強電路與方法 |
CN110035267B (zh) * | 2018-01-12 | 2021-07-16 | 瑞昱半导体股份有限公司 | 影像增强电路与方法 |
CN111063319B (zh) | 2018-10-16 | 2021-05-18 | 深圳Tcl新技术有限公司 | 基于背光调整的图像动态增强方法、装置和计算机设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0424920B1 (en) * | 1989-10-25 | 1995-12-13 | Dainippon Screen Mfg. Co., Ltd. | Method of and apparatus for obtaining tone curve |
EP0366099B1 (en) * | 1988-10-24 | 1996-01-17 | Hughes Aircraft Company | Computationally efficient technique of image contrast enhancement |
CN1162799A (zh) * | 1996-04-10 | 1997-10-22 | 三星电子株式会社 | 利用平均值匹配直方图均衡的图像增强方法及其电路 |
CN1438610A (zh) * | 2002-02-06 | 2003-08-27 | 三星电子株式会社 | 使用直方图匹配增强对比度的装置和方法 |
Family Cites Families (23)
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JPS6342575A (ja) * | 1986-08-08 | 1988-02-23 | Dainippon Screen Mfg Co Ltd | 階調変換方法およびその装置 |
US5450502A (en) * | 1993-10-07 | 1995-09-12 | Xerox Corporation | Image-dependent luminance enhancement |
US5414538A (en) | 1993-10-07 | 1995-05-09 | Xerox Corporation | Image-dependent exposure enhancement |
US6463173B1 (en) * | 1995-10-30 | 2002-10-08 | Hewlett-Packard Company | System and method for histogram-based image contrast enhancement |
KR100213039B1 (ko) | 1996-04-10 | 1999-08-02 | 윤종용 | 평균-매칭 히스토그램 등화를 이용한 화질 개선 방법 및 그 회로 |
US5828793A (en) | 1996-05-06 | 1998-10-27 | Massachusetts Institute Of Technology | Method and apparatus for producing digital images having extended dynamic ranges |
KR100261214B1 (ko) * | 1997-02-27 | 2000-07-01 | 윤종용 | 영상처리 시스템의 콘트라스트 확장장치에서 히스토그램 등화방법 및 장치 |
US5949918A (en) | 1997-05-21 | 1999-09-07 | Sarnoff Corporation | Method and apparatus for performing image enhancement |
EP2199973A3 (en) * | 1997-06-09 | 2010-09-08 | Seiko Epson Corporation | An image processing apparatus and method, and an image evaluation device and method |
DE69908713T2 (de) | 1998-06-22 | 2004-05-13 | Texas Instruments Inc., Dallas | Selektive Helligkeitserweiterung |
US6239782B1 (en) | 1999-01-19 | 2001-05-29 | Tektronix, Inc. | Single knob intensity control for use in digital test and measurement equipment |
US6594388B1 (en) * | 2000-05-25 | 2003-07-15 | Eastman Kodak Company | Color image reproduction of scenes with preferential color mapping and scene-dependent tone scaling |
US6650664B1 (en) * | 2001-01-19 | 2003-11-18 | The United States Of America As Represented By The Secretary Of The Air Force | Cladding-pumped fiber with helical rare-earth-doped core for fiber lasers and amplifiers |
EP1380177A1 (en) | 2001-04-11 | 2004-01-14 | Koninklijke Philips Electronics N.V. | Picture signal contrast control |
CA2365893A1 (en) * | 2001-12-21 | 2003-06-21 | Jaldi Semiconductor Corp. | System and method for dynamically enhanced colour space |
KR100466785B1 (ko) * | 2002-01-18 | 2005-01-17 | (주)플렛디스 | 평판 디스플레이 패널의 화질 제어장치 및 방법 |
EP1345172A1 (en) | 2002-02-26 | 2003-09-17 | Sony International (Europe) GmbH | Contrast enhancement for digital images |
US7221807B2 (en) * | 2002-03-29 | 2007-05-22 | Sharp Laboratories Of America, Inc. | Methods and systems for digital image characteristic adjustment using a neural network |
US6778183B1 (en) | 2002-07-10 | 2004-08-17 | Genesis Microchip Inc. | Method and system for adaptive color and contrast for display devices |
US7034843B2 (en) | 2002-07-10 | 2006-04-25 | Genesis Microchip Inc. | Method and system for adaptive color and contrast for display devices |
KR20040008067A (ko) | 2002-07-15 | 2004-01-28 | 삼성전자주식회사 | 화면간의 상관도를 이용한 화질 개선 회로 및 방법 |
US7116838B2 (en) * | 2002-10-25 | 2006-10-03 | Eastman Kodak Company | Enhancing the tonal and spatial characteristics of digital images using selective spatial filters |
KR20040040699A (ko) * | 2002-11-07 | 2004-05-13 | 삼성전자주식회사 | 콘트라스트 보정 장치 및 방법 |
-
2005
- 2005-01-26 US US11/044,755 patent/US7760961B2/en active Active
- 2005-10-04 TW TW094134726A patent/TWI392377B/zh active
- 2005-10-07 SG SG200506565A patent/SG121976A1/en unknown
- 2005-10-12 JP JP2005298064A patent/JP4616749B2/ja active Active
- 2005-10-13 EP EP05256355A patent/EP1648156B1/en active Active
- 2005-10-13 KR KR1020050096429A patent/KR101234958B1/ko active IP Right Grant
- 2005-10-13 DE DE602005023821T patent/DE602005023821D1/de active Active
- 2005-10-14 CN CN2005101249436A patent/CN1770847B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0366099B1 (en) * | 1988-10-24 | 1996-01-17 | Hughes Aircraft Company | Computationally efficient technique of image contrast enhancement |
EP0424920B1 (en) * | 1989-10-25 | 1995-12-13 | Dainippon Screen Mfg. Co., Ltd. | Method of and apparatus for obtaining tone curve |
CN1162799A (zh) * | 1996-04-10 | 1997-10-22 | 三星电子株式会社 | 利用平均值匹配直方图均衡的图像增强方法及其电路 |
CN1438610A (zh) * | 2002-02-06 | 2003-08-27 | 三星电子株式会社 | 使用直方图匹配增强对比度的装置和方法 |
Also Published As
Publication number | Publication date |
---|---|
US7760961B2 (en) | 2010-07-20 |
TWI392377B (zh) | 2013-04-01 |
EP1648156B1 (en) | 2010-09-29 |
SG121976A1 (en) | 2006-05-26 |
KR101234958B1 (ko) | 2013-02-19 |
JP4616749B2 (ja) | 2011-01-19 |
KR20060086815A (ko) | 2006-08-01 |
EP1648156A2 (en) | 2006-04-19 |
US20060083425A1 (en) | 2006-04-20 |
CN1770847A (zh) | 2006-05-10 |
TW200627971A (en) | 2006-08-01 |
DE602005023821D1 (de) | 2010-11-11 |
JP2006140995A (ja) | 2006-06-01 |
EP1648156A3 (en) | 2009-01-07 |
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Owner name: TARMIRASBOT PRIVATE CO.,LTD. Free format text: FORMER OWNER: GENESIS MICROCHIP INC Effective date: 20100510 |
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