DE69229085D1 - System zur Bildverarbeitung - Google Patents

System zur Bildverarbeitung

Info

Publication number
DE69229085D1
DE69229085D1 DE69229085T DE69229085T DE69229085D1 DE 69229085 D1 DE69229085 D1 DE 69229085D1 DE 69229085 T DE69229085 T DE 69229085T DE 69229085 T DE69229085 T DE 69229085T DE 69229085 D1 DE69229085 D1 DE 69229085D1
Authority
DE
Germany
Prior art keywords
image processing
processing system
image
processing
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 - Fee Related
Application number
DE69229085T
Other languages
English (en)
Other versions
DE69229085T2 (de
Inventor
Dennis Quardt
Keith S Reid-Green
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.)
Educational Testing Service
Original Assignee
Educational Testing Service
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 Educational Testing Service filed Critical Educational Testing Service
Application granted granted Critical
Publication of DE69229085D1 publication Critical patent/DE69229085D1/de
Publication of DE69229085T2 publication Critical patent/DE69229085T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
DE69229085T 1991-07-12 1992-06-16 System zur Bildverarbeitung Expired - Fee Related DE69229085T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72897091A 1991-07-12 1991-07-12

Publications (2)

Publication Number Publication Date
DE69229085D1 true DE69229085D1 (de) 1999-06-10
DE69229085T2 DE69229085T2 (de) 1999-11-18

Family

ID=24929022

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69229085T Expired - Fee Related DE69229085T2 (de) 1991-07-12 1992-06-16 System zur Bildverarbeitung

Country Status (3)

Country Link
US (1) US5434931A (de)
EP (1) EP0525359B1 (de)
DE (1) DE69229085T2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0610604A1 (de) * 1993-02-11 1994-08-17 Agfa-Gevaert N.V. Mehrfachverarbeitung von Röntgenbildern unter Verwendung einer pyramidalen Bildzerlegung
US5956044A (en) * 1993-05-07 1999-09-21 Eastman Kodak Company Imaging device to media compatibility and color appearance matching with flare, luminance, and white point comparison
US5719965A (en) * 1994-12-13 1998-02-17 Hewlett-Packard Company Higher precision look-up table from lower precision look-up table for improved tonal adjustment
JP3130266B2 (ja) * 1996-03-09 2001-01-31 三星電子株式会社 平均分離ヒストグラム等化を用いる映像改善方法及びその回路
US6310983B1 (en) * 1998-06-16 2001-10-30 Xerox Corporation Efficient search for a gray-level pattern in an image using ranges of sums
AU2001264956A1 (en) * 2000-08-11 2002-02-25 Ctb/Mcgraw-Hill Llc Enhanced data capture from imaged documents
KR20040040699A (ko) * 2002-11-07 2004-05-13 삼성전자주식회사 콘트라스트 보정 장치 및 방법
US7298925B2 (en) * 2003-09-30 2007-11-20 International Business Machines Corporation Efficient scaling in transform domain
US7606421B2 (en) * 2004-12-08 2009-10-20 Ctb/Mcgraw-Hill Llc Data extraction from temporal image data
EP1696384A1 (de) * 2005-02-23 2006-08-30 SONY DEUTSCHLAND GmbH Verfahren zur Bearbeitung digitaler Bilddaten
US8115967B2 (en) * 2006-11-28 2012-02-14 Silverbrook Research Pty Ltd Localized signal data preservation within signal bandwidth
US20080227075A1 (en) * 2007-03-15 2008-09-18 Ctb/Mcgraw-Hill, Llc Method and system for redundant data capture from scanned documents
US20090015875A1 (en) * 2007-06-20 2009-01-15 Ctb/Mcgraw-Hill Companies, Inc. Image manipulation of digitized images of documents
US8316036B2 (en) 2007-08-31 2012-11-20 Microsoft Corporation Checkpointing iterators during search
US8280721B2 (en) * 2007-08-31 2012-10-02 Microsoft Corporation Efficiently representing word sense probabilities
US8526766B2 (en) 2007-10-31 2013-09-03 Ctb/Mcgraw-Hill Llc Use of composite bitmapped images in conjunction with display of captured data
DE102008032686B4 (de) 2008-07-06 2020-07-16 Dürr Dental SE Verfahren zur Verbesserung des Kontrastes von Bildern, insbesondere Grauwertbildern und Vorrichtung zu seiner Durchführung
CN108109135A (zh) * 2017-12-06 2018-06-01 贵阳朗玛信息技术股份有限公司 一种获取图像灰度级分布的方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983320A (en) * 1975-08-25 1976-09-28 Hughes Aircraft Company Raster display histogram equalization
US4445138A (en) * 1981-12-21 1984-04-24 Hughes Aircraft Company Real time dynamic range compression for image enhancement
GB2112602B (en) * 1981-12-24 1985-08-07 Int Computers Ltd Image digitising system
JPS59125176A (ja) * 1982-12-30 1984-07-19 インタ−ナシヨナル　ビジネス　マシ−ンズ　コ−ポレ−シヨン ビデオイメ−ジのシエ−ジング効果の補正装置
US4868651A (en) * 1988-05-17 1989-09-19 S&S Inficon, Inc. Digital radiography with image brightness and contrast normalization
US5063607A (en) * 1988-10-24 1991-11-05 Hughes Aircraft Company Image contrast enhancement technique

Also Published As

Publication number Publication date
EP0525359B1 (de) 1999-05-06
EP0525359A2 (de) 1993-02-03
DE69229085T2 (de) 1999-11-18
US5434931A (en) 1995-07-18
EP0525359A3 (en) 1995-04-05

Similar Documents

Publication Publication Date Title
DE69226103D1 (de) System zur Bildbearbeitung
DE69231050D1 (de) Gerät zur Bildverarbeitung
DE69429207T2 (de) Bildverarbeitungssystem
DE69427247D1 (de) Gerät zur Bildverarbeitung
DE69225541D1 (de) Bildverarbeitung
DE69206847T2 (de) Bildverarbeitungsverfahren
DE69132625D1 (de) Gerät zur Bildverarbeitung
DE69133177D1 (de) Bilddatenbearbeitungssystem
DE69325858D1 (de) System zur Dokumentenverarbeitung
DE69229085T2 (de) System zur Bildverarbeitung
DE69226559T2 (de) Bildverarbeitung
DE69121812T2 (de) Videobildverarbeitungsanlage
DE69116924D1 (de) Halbton-Bildverarbeitungssystem
DE69231049T2 (de) Bildverarbeitung
DE69227073D1 (de) Bildverarbeitung
DE69115097T2 (de) Gerät zur Bildverarbeitung.
DE69227646D1 (de) Bildverarbeitung
DE69118962T2 (de) System zur Bildverarbeitung
DE69220118D1 (de) Bildbinarisierungssystem
DE69223691D1 (de) Farbbildverarbeitungssystem
DE69222397T2 (de) Bildverarbeitung
DE69131304D1 (de) System zur Bildverarbeitung
DE69215916D1 (de) System zur Bildverbesserung
DE69219982T2 (de) Bildverarbeitungsverfahren und -system
DE69122136D1 (de) Elektronisches Bildverarbeitungssystem

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee