JPH0575222B2 - - Google Patents

Info

Publication number
JPH0575222B2
JPH0575222B2 JP61187379A JP18737986A JPH0575222B2 JP H0575222 B2 JPH0575222 B2 JP H0575222B2 JP 61187379 A JP61187379 A JP 61187379A JP 18737986 A JP18737986 A JP 18737986A JP H0575222 B2 JPH0575222 B2 JP H0575222B2
Authority
JP
Japan
Prior art keywords
gradation conversion
curve
conversion curve
original image
density
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
JP61187379A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6342575A (ja
Inventor
Akihiro Nomura
Yasuo Kurusu
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
Application filed by Dainippon Screen Manufacturing Co Ltd filed Critical Dainippon Screen Manufacturing Co Ltd
Priority to JP61187379A priority Critical patent/JPS6342575A/ja
Priority to EP87111353A priority patent/EP0255949B1/en
Priority to DE3789741T priority patent/DE3789741T2/de
Priority to US07/082,334 priority patent/US4792979A/en
Publication of JPS6342575A publication Critical patent/JPS6342575A/ja
Publication of JPH0575222B2 publication Critical patent/JPH0575222B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • 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)
  • Image Processing (AREA)
JP61187379A 1986-08-08 1986-08-08 階調変換方法およびその装置 Granted JPS6342575A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP61187379A JPS6342575A (ja) 1986-08-08 1986-08-08 階調変換方法およびその装置
EP87111353A EP0255949B1 (en) 1986-08-08 1987-08-05 Method of and apparatus for correcting gradation of image represented by image data
DE3789741T DE3789741T2 (de) 1986-08-08 1987-08-05 Verfahren und Vorrichtung zur Gradationskorrektur eines durch Bilddaten wiedergegebenen Bildes.
US07/082,334 US4792979A (en) 1986-08-08 1987-08-06 Method of and apparatus for correcting gradation of image represented by image data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61187379A JPS6342575A (ja) 1986-08-08 1986-08-08 階調変換方法およびその装置

Publications (2)

Publication Number Publication Date
JPS6342575A JPS6342575A (ja) 1988-02-23
JPH0575222B2 true JPH0575222B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1993-10-20

Family

ID=16204983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61187379A Granted JPS6342575A (ja) 1986-08-08 1986-08-08 階調変換方法およびその装置

Country Status (4)

Country Link
US (1) US4792979A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0255949B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS6342575A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE3789741T2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011061537A (ja) * 2009-09-10 2011-03-24 Toshiba Corp 映像処理装置及び映像処理方法

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JP2525859B2 (ja) * 1988-03-31 1996-08-21 大日本スクリーン製造株式会社 ハイライト・シャド―濃度値の設定方法
JPH01284743A (ja) * 1988-05-10 1989-11-16 Toshiba Corp 半導体装置の樹脂モールドの外観検査方法とその検査装置
JPH078006B2 (ja) * 1988-05-17 1995-01-30 三菱電機株式会社 中間調補正方法
DE68926940T2 (de) * 1988-06-30 1997-01-09 Dainippon Screen Mfg Verfahren zur Erzeugung einer Abstufungskorrekturkurve zur Korrektur des Abstufungscharakters eines Bildes
JP2833652B2 (ja) * 1988-07-15 1998-12-09 株式会社ヤマトヤ商会 カラーテレビジヨンの画像処理方法及びその装置
JP2796718B2 (ja) * 1988-08-23 1998-09-10 株式会社ヤマトヤ商会 画像の階調変換方法
JP2575843B2 (ja) * 1988-10-13 1997-01-29 富士写真フイルム株式会社 画像入出力システム及び信号処理条件の自動設定方法
US5097520A (en) * 1989-01-20 1992-03-17 Ricoh Company, Ltd. Method of obtaining optimum threshold values
US5289293A (en) * 1989-03-14 1994-02-22 Canon Kabushiki Kaisha Pixel density conversion and processing
JP2710850B2 (ja) * 1989-03-27 1998-02-10 キヤノン株式会社 ワーク把持装置、ワーク及びその収納ケース
JPH03102478A (ja) * 1989-09-14 1991-04-26 Shimadzu Corp 画像処理装置
US5608823A (en) * 1989-10-04 1997-03-04 Canon Kabushiki Kaisha Image reading apparatus for correcting density levels
JPH06103927B2 (ja) * 1989-10-25 1994-12-14 大日本スクリーン製造株式会社 トーンカーブ設定方法
JP2808773B2 (ja) * 1990-01-09 1998-10-08 株式会社日立製作所 階調変換自動化装置
US5260806A (en) * 1990-08-29 1993-11-09 E. I. Du Pont De Nemours And Company Process for controlling tone reproduction
US5544258A (en) * 1991-03-14 1996-08-06 Levien; Raphael L. Automatic tone correction of images using non-linear histogram processing
JPH04368058A (ja) * 1991-06-14 1992-12-21 Fuji Photo Film Co Ltd 自動濃度測定方法
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
EP0534430B1 (en) * 1991-09-27 1996-12-27 Dainippon Screen Mfg. Co., Ltd. Method of and apparatus for converting image signal representing image having gradation
US5224177A (en) * 1991-10-31 1993-06-29 The University Of Chicago High quality film image correction and duplication method and system
DE69325527T2 (de) * 1992-02-21 1999-11-25 Canon K.K., Tokio/Tokyo Gerät und Verfahren zur Bildverarbeitung
US5335293A (en) * 1992-06-16 1994-08-02 Key Technology, Inc. Product inspection method and apparatus
US5410418A (en) * 1992-06-24 1995-04-25 Dainippon Screen Mfg. Co., Ltd. Apparatus for converting image signal representing image having gradation
US5281979A (en) * 1992-11-04 1994-01-25 Eastman Kodak Company Laser printer calibration
US5452403A (en) * 1992-12-23 1995-09-19 Eastman Kodak Company Process for selecting output levels for multi-level halftone in the presence of an unstable display device
DE69414153T2 (de) * 1993-02-24 1999-06-10 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka Vorrichtung zur Gradationskorrektur und Bildaufnahmegerät mit einer solchen Vorrichtung
JP3241157B2 (ja) * 1993-04-19 2001-12-25 富士写真フイルム株式会社 網点画像データ補正方法および補正機能を有する画像処理装置
US5589954A (en) * 1993-05-28 1996-12-31 Ricoh Company, Ltd. γ-correction curve selecting apparatus and a γ-correction curve creating apparatus
JP3014252B2 (ja) * 1993-09-16 2000-02-28 富士通株式会社 画像処理方法および画像処理装置
US5347374A (en) * 1993-11-05 1994-09-13 Xerox Corporation Cascaded image processing using histogram prediction
US5796865A (en) * 1994-07-04 1998-08-18 Fuji Photo Film Co., Ltd. Gradation correcting method and apparatus
US5715377A (en) * 1994-07-21 1998-02-03 Matsushita Electric Industrial Co. Ltd. Gray level correction apparatus
US5574544A (en) * 1994-08-29 1996-11-12 Konica Corporation Image forming apparatus having image density gradation correction means
US5760920A (en) * 1994-09-19 1998-06-02 Lin; Qian System and method for generating calibrated dither matrices
US5727080A (en) * 1995-05-03 1998-03-10 Nec Research Institute, Inc. Dynamic histogram warping of image histograms for constant image brightness, histogram matching and histogram specification
JPH09130605A (ja) * 1995-10-31 1997-05-16 Fuji Photo Film Co Ltd 網点画像出力方法およびその装置
US6160634A (en) * 1995-12-25 2000-12-12 Fuji Photo Film Co., Ltd. Digital printer and image data conversion method
US6072588A (en) * 1996-04-02 2000-06-06 Fuji Photo Film Co., Ltd. Method of generating proof data and method of generating proof
JPH1013682A (ja) * 1996-06-21 1998-01-16 Nikon Corp 画像処理方法
US6731798B1 (en) * 1998-04-30 2004-05-04 General Electric Company Method for converting digital image pixel values including remote services provided over a network
US6738510B2 (en) * 2000-02-22 2004-05-18 Olympus Optical Co., Ltd. Image processing apparatus
JP2001243464A (ja) * 2000-02-29 2001-09-07 Canon Inc 画像処理装置、画像処理システム、画像処理方法、及び記憶媒体
US6792160B2 (en) 2001-07-27 2004-09-14 Hewlett-Packard Development Company, L.P. General purpose image enhancement algorithm which augments the visual perception of detail in digital images
US7228004B2 (en) * 2002-09-05 2007-06-05 Eastman Kodak Company Method for sharpening a digital image
US20040114795A1 (en) * 2002-12-12 2004-06-17 Chung-Yen Lu Method and apparatus for color processing
US20040120599A1 (en) * 2002-12-19 2004-06-24 Canon Kabushiki Kaisha Detection and enhancement of backlit images
JP4280904B2 (ja) * 2003-03-25 2009-06-17 セイコーエプソン株式会社 画像処理システム、プロジェクタ、プログラム、情報記憶媒体および画像処理方法
US7840067B2 (en) * 2003-10-24 2010-11-23 Arcsoft, Inc. Color matching and color correction for images forming a panoramic image
JP4078649B2 (ja) * 2004-01-28 2008-04-23 日本ビクター株式会社 映像信号処理装置及び方法
TWI237497B (en) * 2004-05-07 2005-08-01 Quanta Comp Inc High speed and high accuracy image adjust apparatus and method
JP4277773B2 (ja) * 2004-09-21 2009-06-10 株式会社日立製作所 映像表示装置
US7760961B2 (en) * 2004-10-15 2010-07-20 Caba Moldvai Adaptive contrast enhancement
JP4952251B2 (ja) * 2004-12-17 2012-06-13 株式会社ニコン 画像処理方法、画像処理プログラム、記録媒体、および画像処理装置
JP4831067B2 (ja) 2005-06-20 2011-12-07 株式会社ニコン 画像処理装置、画像処理方法、画像処理プログラム製品、および撮像装置
JP2007067571A (ja) * 2005-08-29 2007-03-15 Fujitsu Ltd 画像処理装置
JP4715639B2 (ja) * 2005-12-12 2011-07-06 富士ゼロックス株式会社 画像形成制御装置及びプログラム
US8369646B2 (en) 2006-05-17 2013-02-05 Sony Corporation Image correction circuit, image correction method and image display
US8369645B2 (en) * 2006-05-17 2013-02-05 Sony Corporation Image correction circuit, image correction method and image display
US8290295B2 (en) * 2009-03-03 2012-10-16 Microsoft Corporation Multi-modal tone-mapping of images
JP5669599B2 (ja) * 2010-05-14 2015-02-12 キヤノン株式会社 画像処理装置及びその制御方法
JP5838733B2 (ja) * 2011-11-01 2016-01-06 株式会社リコー 画像形成装置、画像形成方法、画像形成プログラム及び記録媒体
US9805662B2 (en) * 2015-03-23 2017-10-31 Intel Corporation Content adaptive backlight power saving technology

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US4472736A (en) * 1980-03-11 1984-09-18 Dainippon Ink And Chemicals Incorporated Lithographic reproduction original classification and color separation tone curve adjustment
DE3107901A1 (de) * 1981-03-02 1982-09-16 Siemens AG, 1000 Berlin und 8000 München Digitale echtzeit-fernseh-bildverarbeitungseinrichtung
JPS60105375A (ja) * 1983-07-29 1985-06-10 Dainippon Ink & Chem Inc スキヤナ−のセツトアツプ方法
JPH0757006B2 (ja) * 1983-08-09 1995-06-14 富士写真フイルム株式会社 階調変換テーブルの自動設定方式
US4667228A (en) * 1983-10-14 1987-05-19 Canon Kabushiki Kaisha Image signal processing apparatus
JPS60139080A (ja) * 1983-12-27 1985-07-23 Canon Inc 画像処理装置
US4727434A (en) * 1984-03-14 1988-02-23 Canon Kabushiki Kaisha Image processing apparatus for rapid production of a hard copy of a video image in which input image signal processing parameters are set while a record medium is being positioned at a recording position
JPS6120042A (ja) * 1984-07-06 1986-01-28 Dainippon Screen Mfg Co Ltd 画像走査記録方法及び装置
JPS6145678A (ja) * 1984-08-09 1986-03-05 Fuji Xerox Co Ltd 画信号処理装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011061537A (ja) * 2009-09-10 2011-03-24 Toshiba Corp 映像処理装置及び映像処理方法

Also Published As

Publication number Publication date
EP0255949A3 (en) 1989-10-25
JPS6342575A (ja) 1988-02-23
US4792979A (en) 1988-12-20
DE3789741D1 (de) 1994-06-09
EP0255949B1 (en) 1994-05-04
DE3789741T2 (de) 1994-12-15
EP0255949A2 (en) 1988-02-17

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