DE69717517D1 - Verfahren und Schaltungsanordnung zur Bildverbesserung durch verteilten Histogrammausgleich mit Hilfe einer quantisierten mittleren Bildhelligkeit - Google Patents

Verfahren und Schaltungsanordnung zur Bildverbesserung durch verteilten Histogrammausgleich mit Hilfe einer quantisierten mittleren Bildhelligkeit

Info

Publication number
DE69717517D1
DE69717517D1 DE69717517T DE69717517T DE69717517D1 DE 69717517 D1 DE69717517 D1 DE 69717517D1 DE 69717517 T DE69717517 T DE 69717517T DE 69717517 T DE69717517 T DE 69717517T DE 69717517 D1 DE69717517 D1 DE 69717517D1
Authority
DE
Germany
Prior art keywords
aid
circuit arrangement
quantized average
image
improvement
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69717517T
Other languages
English (en)
Other versions
DE69717517T2 (de
Inventor
Young-Taek Kim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of DE69717517D1 publication Critical patent/DE69717517D1/de
Application granted granted Critical
Publication of DE69717517T2 publication Critical patent/DE69717517T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/20—Image enhancement or restoration using local operators
    • 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
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/20—Special algorithmic details
    • G06T2207/20021—Dividing image into blocks, subimages or windows

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)
  • Picture Signal Circuits (AREA)
  • Television Receiver Circuits (AREA)
DE69717517T 1996-03-09 1997-03-06 Verfahren und Schaltungsanordnung zur Bildverbesserung durch verteilten Histogrammausgleich mit Hilfe einer quantisierten mittleren Bildhelligkeit Expired - Lifetime DE69717517T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960006220A KR100207660B1 (ko) 1996-03-09 1996-03-09 양자화된 평균 분리 히스토그램 등화를 이용한 화질 개선 방법 및 그 회로

Publications (2)

Publication Number Publication Date
DE69717517D1 true DE69717517D1 (de) 2003-01-16
DE69717517T2 DE69717517T2 (de) 2003-04-24

Family

ID=19452708

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69717517T Expired - Lifetime DE69717517T2 (de) 1996-03-09 1997-03-06 Verfahren und Schaltungsanordnung zur Bildverbesserung durch verteilten Histogrammausgleich mit Hilfe einer quantisierten mittleren Bildhelligkeit

Country Status (7)

Country Link
US (1) US5857033A (de)
EP (1) EP0794513B1 (de)
JP (1) JP2858742B2 (de)
KR (1) KR100207660B1 (de)
CN (1) CN1124568C (de)
DE (1) DE69717517T2 (de)
ES (1) ES2188862T3 (de)

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US6049626A (en) * 1996-10-09 2000-04-11 Samsung Electronics Co., Ltd. Image enhancing method and circuit using mean separate/quantized mean separate histogram equalization and color compensation
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US6671402B1 (en) 2000-12-15 2003-12-30 America Online, Inc. Representing an image with weighted joint histogram
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US6556710B2 (en) 2000-12-15 2003-04-29 America Online, Inc. Image searching techniques
US6522782B2 (en) 2000-12-15 2003-02-18 America Online, Inc. Image and text searching techniques
EP1345172A1 (de) * 2002-02-26 2003-09-17 Sony International (Europe) GmbH Kontrastverbesserung in digitalen Bildern
DE10214908A1 (de) * 2002-04-04 2003-11-13 Infineon Technologies Ag Einrichtung und Verfahren zur geregelten Skalierung und Quantisierung von Soft-Output-Werten eines Entzerrers
KR20040008067A (ko) 2002-07-15 2004-01-28 삼성전자주식회사 화면간의 상관도를 이용한 화질 개선 회로 및 방법
US20040109091A1 (en) * 2002-12-03 2004-06-10 Samsung Electronics Co., Ltd. Apparatus and method for adaptive brightness control
US20050244337A1 (en) * 2003-04-08 2005-11-03 Xingwu Wang Medical device with a marker
US20050261763A1 (en) * 2003-04-08 2005-11-24 Xingwu Wang Medical device
US20050278020A1 (en) * 2003-04-08 2005-12-15 Xingwu Wang Medical device
KR100513273B1 (ko) * 2003-07-04 2005-09-09 이디텍 주식회사 동영상 신호의 실시간 밝기 제어 장치 및 방법
US20070027532A1 (en) * 2003-12-22 2007-02-01 Xingwu Wang Medical device
JP3930493B2 (ja) * 2004-05-17 2007-06-13 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 画像処理方法、画像処理装置およびｘ線ｃｔ装置
US7768496B2 (en) * 2004-12-02 2010-08-03 Sharp Laboratories Of America, Inc. Methods and systems for image tonescale adjustment to compensate for a reduced source light power level
US9083969B2 (en) 2005-08-12 2015-07-14 Sharp Laboratories Of America, Inc. Methods and systems for independent view adjustment in multiple-view displays
US7800577B2 (en) * 2004-12-02 2010-09-21 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics
US7924261B2 (en) * 2004-12-02 2011-04-12 Sharp Laboratories Of America, Inc. Methods and systems for determining a display light source adjustment
US7782405B2 (en) * 2004-12-02 2010-08-24 Sharp Laboratories Of America, Inc. Systems and methods for selecting a display source light illumination level
US8913089B2 (en) * 2005-06-15 2014-12-16 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with frequency-specific gain
US8922594B2 (en) * 2005-06-15 2014-12-30 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with high frequency contrast enhancement
US8120570B2 (en) 2004-12-02 2012-02-21 Sharp Laboratories Of America, Inc. Systems and methods for tone curve generation, selection and application
US8111265B2 (en) * 2004-12-02 2012-02-07 Sharp Laboratories Of America, Inc. Systems and methods for brightness preservation using a smoothed gain image
US8004511B2 (en) * 2004-12-02 2011-08-23 Sharp Laboratories Of America, Inc. Systems and methods for distortion-related source light management
US7961199B2 (en) * 2004-12-02 2011-06-14 Sharp Laboratories Of America, Inc. Methods and systems for image-specific tone scale adjustment and light-source control
US7982707B2 (en) * 2004-12-02 2011-07-19 Sharp Laboratories Of America, Inc. Methods and systems for generating and applying image tone scale adjustments
US8947465B2 (en) * 2004-12-02 2015-02-03 Sharp Laboratories Of America, Inc. Methods and systems for display-mode-dependent brightness preservation
US7515160B2 (en) * 2006-07-28 2009-04-07 Sharp Laboratories Of America, Inc. Systems and methods for color preservation with image tone scale corrections
US8295596B1 (en) 2005-12-07 2012-10-23 Marvell International Ltd. Adaptive histogram-based video contrast enhancement
US7839406B2 (en) * 2006-03-08 2010-11-23 Sharp Laboratories Of America, Inc. Methods and systems for enhancing display characteristics with ambient illumination input
KR100809347B1 (ko) * 2006-07-31 2008-03-05 삼성전자주식회사 쉐도우 영역 보상 방법 및 장치
US7826681B2 (en) * 2007-02-28 2010-11-02 Sharp Laboratories Of America, Inc. Methods and systems for surround-specific display modeling
US8218868B2 (en) * 2007-06-13 2012-07-10 Sensors Unlimited, Inc. Method and apparatus for enhancing images
US8806321B2 (en) * 2007-06-26 2014-08-12 Oracle International Corporation Interactive controls and information visualization using histogram equalization
US8345038B2 (en) * 2007-10-30 2013-01-01 Sharp Laboratories Of America, Inc. Methods and systems for backlight modulation and brightness preservation
US8155434B2 (en) * 2007-10-30 2012-04-10 Sharp Laboratories Of America, Inc. Methods and systems for image enhancement
US9177509B2 (en) * 2007-11-30 2015-11-03 Sharp Laboratories Of America, Inc. Methods and systems for backlight modulation with scene-cut detection
US8378956B2 (en) * 2007-11-30 2013-02-19 Sharp Laboratories Of America, Inc. Methods and systems for weighted-error-vector-based source light selection
US8203579B2 (en) * 2007-12-26 2012-06-19 Sharp Laboratories Of America, Inc. Methods and systems for backlight modulation with image characteristic mapping
US8207932B2 (en) 2007-12-26 2012-06-26 Sharp Laboratories Of America, Inc. Methods and systems for display source light illumination level selection
US8169431B2 (en) 2007-12-26 2012-05-01 Sharp Laboratories Of America, Inc. Methods and systems for image tonescale design
US8179363B2 (en) * 2007-12-26 2012-05-15 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with histogram manipulation
US8223113B2 (en) * 2007-12-26 2012-07-17 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with variable delay
US8531379B2 (en) * 2008-04-28 2013-09-10 Sharp Laboratories Of America, Inc. Methods and systems for image compensation for ambient conditions
US8416179B2 (en) * 2008-07-10 2013-04-09 Sharp Laboratories Of America, Inc. Methods and systems for color preservation with a color-modulated backlight
US9330630B2 (en) * 2008-08-30 2016-05-03 Sharp Laboratories Of America, Inc. Methods and systems for display source light management with rate change control
US8165724B2 (en) * 2009-06-17 2012-04-24 Sharp Laboratories Of America, Inc. Methods and systems for power-controlling display devices
US20110001737A1 (en) * 2009-07-02 2011-01-06 Kerofsky Louis J Methods and Systems for Ambient-Adaptive Image Display
US20110074803A1 (en) * 2009-09-29 2011-03-31 Louis Joseph Kerofsky Methods and Systems for Ambient-Illumination-Selective Display Backlight Modification and Image Enhancement
US8781248B2 (en) * 2010-01-28 2014-07-15 Stmicroelectronics Asia Pacific Pte. Ltd. Image details preservation and enhancement
KR101711031B1 (ko) * 2010-07-21 2017-02-28 삼성전자주식회사 등화기, 이를 이용한 수신기 및 등화 방법
CN102288945B (zh) * 2011-05-11 2012-11-28 成都成电电子信息技术工程有限公司 一种船用雷达图像增强方法
US9646366B2 (en) * 2012-11-30 2017-05-09 Change Healthcare Llc Method and apparatus for enhancing medical images
US9643408B1 (en) * 2016-02-09 2017-05-09 Xerox Corporation Joint quantization of drop probability functions in multi-size drop inkjet printers

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NL9202246A (nl) * 1992-12-23 1994-07-18 Ver Coop Melkind Werkwijze voor het bereiden van een emulsie met instelbare viscositeit.
EP0603908A3 (de) * 1992-12-25 1996-02-07 Dainippon Screen Mfg Verfahren und Gerät zur Bildsignalkonvertierung.
JPH0773308A (ja) * 1993-09-03 1995-03-17 Matsushita Electric Ind Co Ltd デジタル画像処理装置
US5489782A (en) * 1994-03-24 1996-02-06 Imaging Laboratory, Inc. Method and apparatus for quantum-limited data acquisition

Also Published As

Publication number Publication date
EP0794513B1 (de) 2002-12-04
JPH103538A (ja) 1998-01-06
US5857033A (en) 1999-01-05
JP2858742B2 (ja) 1999-02-17
EP0794513A1 (de) 1997-09-10
CN1164803A (zh) 1997-11-12
ES2188862T3 (es) 2003-07-01
KR970068620A (ko) 1997-10-13
DE69717517T2 (de) 2003-04-24
KR100207660B1 (ko) 1999-07-15
CN1124568C (zh) 2003-10-15

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