DE68926940T2 - Verfahren zur Erzeugung einer Abstufungskorrekturkurve zur Korrektur des Abstufungscharakters eines Bildes - Google Patents

Verfahren zur Erzeugung einer Abstufungskorrekturkurve zur Korrektur des Abstufungscharakters eines Bildes

Info

Publication number
DE68926940T2
DE68926940T2 DE68926940T DE68926940T DE68926940T2 DE 68926940 T2 DE68926940 T2 DE 68926940T2 DE 68926940 T DE68926940 T DE 68926940T DE 68926940 T DE68926940 T DE 68926940T DE 68926940 T2 DE68926940 T2 DE 68926940T2
Authority
DE
Germany
Prior art keywords
gradation
correcting
generating
image
correction curve
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
DE68926940T
Other languages
English (en)
Other versions
DE68926940D1 (de
Inventor
Masamichi Dainippon Screen Cho
Yasuo Dainippon Screen Kurusu
Akihiro Dainippon Scree Nomura
Kunio Dainippon Scree Tomohisa
Takashi Dainippon Scr Sakamoto
Nobuhiro Dainippon Scre Takita
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.)
Dainippon Screen Manufacturing Co Ltd
Original Assignee
Dainippon Screen Manufacturing 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
Priority claimed from JP63165365A external-priority patent/JPH0652931B2/ja
Priority claimed from JP63165366A external-priority patent/JPH0614684B2/ja
Priority claimed from JP63165364A external-priority patent/JPH0681256B2/ja
Priority claimed from JP63208820A external-priority patent/JPH0256175A/ja
Application filed by Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Application granted granted Critical
Publication of DE68926940D1 publication Critical patent/DE68926940D1/de
Publication of DE68926940T2 publication Critical patent/DE68926940T2/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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
DE68926940T 1988-06-30 1989-06-28 Verfahren zur Erzeugung einer Abstufungskorrekturkurve zur Korrektur des Abstufungscharakters eines Bildes Expired - Fee Related DE68926940T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP63165365A JPH0652931B2 (ja) 1988-06-30 1988-06-30 階調変換曲線発生装置
JP63165366A JPH0614684B2 (ja) 1988-06-30 1988-06-30 階調変換曲線の発生方法
JP63165364A JPH0681256B2 (ja) 1988-06-30 1988-06-30 階調変換装置におけるハイライト点とシャドウ点との設定方法
JP63208820A JPH0256175A (ja) 1988-08-22 1988-08-22 基準濃度点の設定方法

Publications (2)

Publication Number Publication Date
DE68926940D1 DE68926940D1 (de) 1996-09-19
DE68926940T2 true DE68926940T2 (de) 1997-01-09

Family

ID=27473995

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68926940T Expired - Fee Related DE68926940T2 (de) 1988-06-30 1989-06-28 Verfahren zur Erzeugung einer Abstufungskorrekturkurve zur Korrektur des Abstufungscharakters eines Bildes

Country Status (3)

Country Link
US (1) US5123060A (de)
EP (1) EP0352491B1 (de)
DE (1) DE68926940T2 (de)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117293A (en) * 1989-11-28 1992-05-26 Dainippon Screen Mfg. Co. Ltd. Method of and apparatus for generating conversion curve employable for converting reproduction characteristic of image
JPH0787587B2 (ja) * 1990-02-16 1995-09-20 松下電器産業株式会社 階調補正装置
CA2108797C (en) * 1991-04-25 2003-03-11 Robert Charles Kidd Method and apparatus for adaptively thresholding grayscale image data
US5249241A (en) * 1991-07-09 1993-09-28 The United States Of America As Represented By The Secretary Of The Air Force Real-time automated scene display for infrared cameras
DE69216190T2 (de) * 1991-09-27 1997-04-17 Dainippon Screen Mfg Verfahren und Vorrichtung zum Umsetzen von Bildsignalen die ein Bild mit Gradation darstellen
US5339368A (en) * 1991-11-21 1994-08-16 Unisys Corporation Document image compression system and method
US5164993A (en) * 1991-11-25 1992-11-17 Eastman Kodak Company Method and apparatus for automatic tonescale generation in digital radiographic images
DE69325527T2 (de) * 1992-02-21 1999-11-25 Canon Kk Gerät und Verfahren zur Bildverarbeitung
JP3158654B2 (ja) * 1992-05-19 2001-04-23 ミノルタ株式会社 デジタルカラー画像形成装置
JPH06175452A (ja) * 1992-12-11 1994-06-24 Matsushita Electric Ind Co Ltd 電子写真装置
EP0654761B1 (de) * 1993-11-23 1997-02-05 Agfa-Gevaert N.V. Verfahren und Anordnung zur Lokalisierung von gesättigten Bildelementen auf einer Röntgenbildanzeigevorrichtung
US5623555A (en) * 1994-04-18 1997-04-22 Lucent Technologies Inc. Method and apparatus for handwriting decompression using estimated timing information
AU3554495A (en) * 1994-09-19 1996-04-09 Apple Computer, Inc. Generation of tone reproduction curves using psychophysical data
US5802214A (en) * 1995-12-08 1998-09-01 Xerox Corporation Method for determining and loading an image-dependent look-up table for generating an enhanced image representation
JP3505115B2 (ja) * 1999-04-28 2004-03-08 富士通株式会社 画像加工装置及びプログラム記録媒体
US6061091A (en) * 1996-05-30 2000-05-09 Agfa Gevaert N.V. Detection of and correction for specular reflections in digital image acquisition
JPH1188687A (ja) * 1997-09-05 1999-03-30 Canon Inc 画像処理装置及び画像処理方法
JP3075247B2 (ja) * 1998-01-09 2000-08-14 日本電気株式会社 カラー電子写真印刷装置
US6493468B1 (en) * 1998-05-06 2002-12-10 Canon Kabushiki Kaisha Image processing apparatus and method
US6798536B1 (en) * 1998-08-04 2004-09-28 Fuji Photo Film Co., Ltd. Apparatus for displaying tone curve and apparatus for adjusting tone curve
US7251056B2 (en) * 2001-06-11 2007-07-31 Ricoh Company, Ltd. Image processing apparatus, image processing method and information recording medium
US7016534B2 (en) * 2001-08-07 2006-03-21 Canon Kabushiki Kaisha Method, and apparatus for discriminating kind of image medium stored with program
JP4167097B2 (ja) * 2003-03-17 2008-10-15 株式会社沖データ 画像処理方法および画像処理装置
US20050001935A1 (en) * 2003-07-03 2005-01-06 Shinya Kiuchi Image processing device, image display device, and image processing method
JP4172346B2 (ja) * 2003-07-15 2008-10-29 コニカミノルタビジネステクノロジーズ株式会社 画像処理装置及びプログラム
JP4189328B2 (ja) * 2004-01-16 2008-12-03 セイコーエプソン株式会社 画像処理装置、画像表示装置、画像処理方法および画像処理プログラム
TWI237497B (en) * 2004-05-07 2005-08-01 Quanta Comp Inc High speed and high accuracy image adjust apparatus and method
JP4293200B2 (ja) * 2006-04-06 2009-07-08 コニカミノルタビジネステクノロジーズ株式会社 画像形成装置及び画像形成方法
US7876474B2 (en) * 2006-10-31 2011-01-25 Brother Kogyo Kabushiki Kaisha Image processing device capable of suppressing over-correction in Retinex process
JP5966603B2 (ja) * 2011-06-28 2016-08-10 大日本印刷株式会社 画像処理装置、画像処理方法、画像処理用プログラム、および、記録媒体
US20130278605A1 (en) * 2012-04-19 2013-10-24 Sanideep Dilip Pathak Methods and apparatus for monitoring operation of a system asset

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55116340A (en) * 1979-02-28 1980-09-06 Fuji Photo Film Co Ltd Method and device for processing gradation of radiation picture
JPS5687044A (en) * 1979-12-17 1981-07-15 Dainippon Screen Mfg Co Ltd Method of determining adjusting items in image scanning recorder
JPS5714840A (en) * 1980-07-02 1982-01-26 Dainippon Ink & Chem Inc Setting up method for automatic color separating machine
US4472736A (en) * 1980-03-11 1984-09-18 Dainippon Ink And Chemicals Incorporated Lithographic reproduction original classification and color separation tone curve adjustment
JPS60156055A (ja) * 1984-01-26 1985-08-16 Fuji Photo Film Co Ltd 放射線画像情報読取条件決定方法
JPS60218181A (ja) * 1984-04-13 1985-10-31 Fujitsu Ltd 画像処理装置
EP0163903B1 (de) * 1984-04-23 1991-06-05 Fuji Photo Film Co., Ltd. Schwärzungsgrad-Korrekturverfahren sowie Vorrichtung für Subtraktionsbilder
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

Also Published As

Publication number Publication date
DE68926940D1 (de) 1996-09-19
EP0352491A1 (de) 1990-01-31
US5123060A (en) 1992-06-16
EP0352491B1 (de) 1996-08-14

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Legal Events

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