DE69130025T2 - Bildverarbeitungsverfahren und -gerät - Google Patents

Bildverarbeitungsverfahren und -gerät

Info

Publication number
DE69130025T2
DE69130025T2 DE69130025T DE69130025T DE69130025T2 DE 69130025 T2 DE69130025 T2 DE 69130025T2 DE 69130025 T DE69130025 T DE 69130025T DE 69130025 T DE69130025 T DE 69130025T DE 69130025 T2 DE69130025 T2 DE 69130025T2
Authority
DE
Germany
Prior art keywords
image processing
processing method
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
DE69130025T
Other languages
English (en)
Other versions
DE69130025D1 (de
DE455580T1 (de
Inventor
Akio Suzuki
Yoshihiro Takada
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.)
Canon Inc
Original Assignee
Canon Inc
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 JP2086172A external-priority patent/JP2899054B2/ja
Priority claimed from JP2161566A external-priority patent/JP3020258B2/ja
Priority claimed from JP2248727A external-priority patent/JP3009442B2/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of DE69130025D1 publication Critical patent/DE69130025D1/de
Application granted granted Critical
Publication of DE69130025T2 publication Critical patent/DE69130025T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40Picture signal circuits
    • H04N1/40006Compensating for the effects of ageing, i.e. changes over time
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40Picture signal circuits
    • H04N1/407Control or modification of tonal gradation or of extreme levels, e.g. background level
DE69130025T 1990-03-30 1991-04-02 Bildverarbeitungsverfahren und -gerät Expired - Fee Related DE69130025T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2086172A JP2899054B2 (ja) 1990-03-30 1990-03-30 画像処理装置
JP2161566A JP3020258B2 (ja) 1990-06-20 1990-06-20 カラー画像処理装置及びカラー画像処理方法
JP2248727A JP3009442B2 (ja) 1990-09-20 1990-09-20 カラー複写装置およびカラー画像処理方法

Publications (2)

Publication Number Publication Date
DE69130025D1 DE69130025D1 (de) 1998-10-01
DE69130025T2 true DE69130025T2 (de) 1999-03-25

Family

ID=27305108

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69130025T Expired - Fee Related DE69130025T2 (de) 1990-03-30 1991-04-02 Bildverarbeitungsverfahren und -gerät

Country Status (3)

Country Link
US (2) US5371609A (de)
EP (1) EP0449328B1 (de)
DE (1) DE69130025T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0486311B1 (de) * 1990-11-15 2001-10-10 Canon Kabushiki Kaisha Farbbildverarbeitungsgerät und -verfahren
US5307182A (en) * 1991-12-30 1994-04-26 Xerox Corporation Methods and apparatus for multigeneration color image processing
US5657068A (en) * 1992-04-02 1997-08-12 Canon Kabushiki Kaisha Color image processing apparatus and conversion method
JP3666888B2 (ja) * 1992-04-29 2005-06-29 キヤノン株式会社 カラー処理装置およびその方法
US5943143A (en) * 1993-06-22 1999-08-24 Canon Kabushiki Kaisha Image processing system having color adjusting features
US6108008A (en) * 1994-09-22 2000-08-22 Canon Kabushiki Kaisha Color image mapping within output device reproduction range
US5703801A (en) * 1995-01-31 1997-12-30 Motorola, Inc. Logarithm/inverse-logarithm converter utilizing second-order term and method of using same
US5642305A (en) * 1995-01-31 1997-06-24 Motorola, Inc. Logarithm/inverse-logarithm converter and method of using same
JPH0937080A (ja) * 1995-07-20 1997-02-07 Canon Inc 画像処理装置及び方法
JPH09261497A (ja) * 1996-03-22 1997-10-03 Minolta Co Ltd 画像形成装置
US7515307B2 (en) * 2005-07-26 2009-04-07 Konica Minolta Systems Laboratory, Inc. Enhanced image printing system
US20070052996A1 (en) * 2005-09-08 2007-03-08 Konica Minolta Systems Laboratory, Inc. Printing system
JP2007194850A (ja) * 2006-01-18 2007-08-02 Sharp Corp 画像処理方法、画像処理装置、画像形成装置、及びコンピュータプログラム
KR102047355B1 (ko) * 2016-07-14 2019-11-21 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. 화상형성장치 및 화상형성장치의 제어 방법
JP7362312B2 (ja) 2019-06-25 2023-10-17 キヤノン株式会社 画像処理装置、撮像装置、画像処理装置の制御方法、及びプログラム

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4097892A (en) * 1976-10-08 1978-06-27 Balding George H Video color film analyzer
CA1127227A (en) * 1977-10-03 1982-07-06 Ichiro Endo Liquid jet recording process and apparatus therefor
JPS57100580A (en) * 1980-12-15 1982-06-22 Fuji Photo Film Co Ltd Ink jet printer
DE3408336A1 (de) * 1983-03-08 1984-09-13 Canon K.K., Tokio/Tokyo Bildreproduktionssystem
US4752822A (en) * 1983-03-08 1988-06-21 Canon Kabushiki Kaisha Color halftone image processing apparatus producing various screen angles and having an adaptive color image data conversion look-up table and a small-capacity masking memory
JPS60120482A (ja) * 1983-12-02 1985-06-27 Canon Inc 画像信号処理装置
US4953227A (en) * 1986-01-31 1990-08-28 Canon Kabushiki Kaisha Image mosaic-processing method and apparatus
EP0266186B1 (de) * 1986-10-29 1993-09-29 Canon Kabushiki Kaisha Farbbildlesegerät oder Farbbilderzeugungsgerät
JP2589298B2 (ja) * 1987-01-28 1997-03-12 キヤノン株式会社 符号化画像データの復号化装置
JPH06100861B2 (ja) * 1987-06-03 1994-12-12 コニカ株式会社 カラ−画像形成装置
JP2681164B2 (ja) * 1988-07-14 1997-11-26 コニカ株式会社 カラー画像形成装置
JP2536094B2 (ja) * 1988-10-20 1996-09-18 富士ゼロックス株式会社 カラ―画像処理装置
JPH02162475A (ja) * 1988-12-15 1990-06-22 Dainippon Screen Mfg Co Ltd 画像輪郭修正方法
US5175804A (en) * 1990-05-31 1992-12-29 Onyx Graphics Corporation System and method for color image reproduction from color separations prepared from random fixed size dot placement
US5408342A (en) * 1993-02-25 1995-04-18 Canon Kabushiki Kaisha Color image processing apparatus, method, and printer driver

Also Published As

Publication number Publication date
US6301017B1 (en) 2001-10-09
DE69130025D1 (de) 1998-10-01
EP0449328A2 (de) 1991-10-02
EP0449328A3 (en) 1992-10-21
US5371609A (en) 1994-12-06
EP0449328B1 (de) 1998-08-26

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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