CA2055058A1 - Automatic correction for color printing - Google Patents

Automatic correction for color printing

Info

Publication number
CA2055058A1
CA2055058A1 CA2055058A CA2055058A CA2055058A1 CA 2055058 A1 CA2055058 A1 CA 2055058A1 CA 2055058 A CA2055058 A CA 2055058A CA 2055058 A CA2055058 A CA 2055058A CA 2055058 A1 CA2055058 A1 CA 2055058A1
Authority
CA
Canada
Prior art keywords
gray scale
color
signals
color signals
color printing
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.)
Granted
Application number
CA2055058A
Other languages
French (fr)
Other versions
CA2055058C (en
Inventor
Anthony Joseph Dattilo
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.)
Ricoh Production Print Solutions LLC
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of CA2055058A1 publication Critical patent/CA2055058A1/en
Application granted granted Critical
Publication of CA2055058C publication Critical patent/CA2055058C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04N1/46—Colour picture communication systems
    • 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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/603—Colour correction or control controlled by characteristics of the picture signal generator or the picture reproducer
    • 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
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6027—Correction or control of colour gradation or colour contrast

Abstract

Automatic processing of color signals to print an accurate reproduction of an original color image. The RGB scan signals are processed to use the full dynamic range of the system and to adjust the values such that the gray scale lines of the color components pass through the white points. The additive color signals are converted to subtractive color signals that are adjusted so that the gray scale lines pass through the black points to produce automatically an accurate reproduction with a proper neutral gray scale. The processing is arranged to make the adjustments and corrections as fast as possible.
CA002055058A 1990-12-31 1991-11-06 Automatic correction for color printing Expired - Lifetime CA2055058C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63651390A 1990-12-31 1990-12-31
US07/636,513 1990-12-31

Publications (2)

Publication Number Publication Date
CA2055058A1 true CA2055058A1 (en) 1992-07-01
CA2055058C CA2055058C (en) 1996-08-06

Family

ID=24552230

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002055058A Expired - Lifetime CA2055058C (en) 1990-12-31 1991-11-06 Automatic correction for color printing

Country Status (5)

Country Link
US (1) US5293258A (en)
EP (1) EP0494034A3 (en)
JP (1) JP2575560B2 (en)
KR (1) KR950008427B1 (en)
CA (1) CA2055058C (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5659673A (en) * 1988-12-16 1997-08-19 Canon Kabushiki Kaisha Image processing apparatus
US5459678A (en) * 1992-07-02 1995-10-17 Feasey; Michael F. Method and calibration apparatus for calibrating computer monitors used in the printing and textile industries
US5754184A (en) * 1993-01-06 1998-05-19 Eastman Kodak Company Digital color system and method which provides a visual match across different input and output viewing conditions
US5479594A (en) * 1993-09-10 1995-12-26 Ati Technologies Inc. Digital color video image enhancement for a diffusion dither circuit
DE69430464T2 (en) * 1993-09-29 2002-10-31 Canon Kk Image processing device and method
US5574666A (en) * 1994-05-13 1996-11-12 Canon Information Systems, Inc. Color printing method and apparatus using gamut mapping in Munsell space
US5724450A (en) * 1994-09-30 1998-03-03 Apple Computer, Inc. Method and system for color image compression in conjunction with color transformation techniques
US5583665A (en) * 1995-02-13 1996-12-10 Eastman Kodak Company Method and apparatus for performing color transformations using a reference image combined with a color tracer
US5731988A (en) * 1995-05-08 1998-03-24 Richo Company, Ltd. Method and apparatus for reversible color conversion
US5978506A (en) * 1995-12-28 1999-11-02 Ricoh & Company, Ltd. Colorant-independent color balancing methods and systems
US5809213A (en) * 1996-02-23 1998-09-15 Seiko Epson Corporation Automatic color calibration of a color reproduction system
IL121579A (en) * 1997-08-19 2001-06-14 Scitex Corp Ltd Method for multiple color space color transformation
US6044172A (en) * 1997-12-22 2000-03-28 Ricoh Company Ltd. Method and apparatus for reversible color conversion
US6304277B1 (en) 1999-01-15 2001-10-16 Colorcentric.Com, Inc. Remote modification of digital images using scripts
US6594387B1 (en) * 1999-04-30 2003-07-15 Texas Instruments Incorporated Enhanced color correction
US6687414B1 (en) * 1999-08-20 2004-02-03 Eastman Kodak Company Method and system for normalizing a plurality of signals having a shared component
DE19946585A1 (en) 1999-09-29 2001-04-12 Heidelberger Druckmasch Ag Process for adapting the printing process while maintaining the black structure
WO2001078368A2 (en) * 2000-04-07 2001-10-18 Demografx Film and video bi-directional color matching system and method
US6755498B2 (en) 2001-03-27 2004-06-29 Global Graphics Software Limited Establishing a reference printer state using a recursive tone scale matching
US7064740B2 (en) * 2001-11-09 2006-06-20 Sharp Laboratories Of America, Inc. Backlit display with improved dynamic range
US7319545B2 (en) * 2002-12-17 2008-01-15 Xerox Corporation Method and apparatus for calibration of a color printer
WO2005052673A2 (en) * 2003-11-21 2005-06-09 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive color
KR100601942B1 (en) * 2004-02-26 2006-07-14 삼성전자주식회사 Method and apparatus for color transformation and multiple color display apparatus using the same
US20050248553A1 (en) * 2004-05-04 2005-11-10 Sharp Laboratories Of America, Inc. Adaptive flicker and motion blur control
US7612757B2 (en) * 2004-05-04 2009-11-03 Sharp Laboratories Of America, Inc. Liquid crystal display with modulated black point
US7602369B2 (en) * 2004-05-04 2009-10-13 Sharp Laboratories Of America, Inc. Liquid crystal display with colored backlight
US7777714B2 (en) 2004-05-04 2010-08-17 Sharp Laboratories Of America, Inc. Liquid crystal display with adaptive width
US7872631B2 (en) * 2004-05-04 2011-01-18 Sharp Laboratories Of America, Inc. Liquid crystal display with temporal black point
US7505018B2 (en) * 2004-05-04 2009-03-17 Sharp Laboratories Of America, Inc. Liquid crystal display with reduced black level insertion
US7532192B2 (en) * 2004-05-04 2009-05-12 Sharp Laboratories Of America, Inc. Liquid crystal display with filtered black point
US8395577B2 (en) * 2004-05-04 2013-03-12 Sharp Laboratories Of America, Inc. Liquid crystal display with illumination control
US7898519B2 (en) 2005-02-17 2011-03-01 Sharp Laboratories Of America, Inc. Method for overdriving a backlit display
US8050512B2 (en) * 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US8050511B2 (en) * 2004-11-16 2011-11-01 Sharp Laboratories Of America, Inc. High dynamic range images from low dynamic range images
US7525528B2 (en) * 2004-11-16 2009-04-28 Sharp Laboratories Of America, Inc. Technique that preserves specular highlights
US7683950B2 (en) * 2005-04-26 2010-03-23 Eastman Kodak Company Method and apparatus for correcting a channel dependent color aberration in a digital image
US7473745B2 (en) * 2005-09-02 2009-01-06 Equistar Chemicals, Lp Preparation of multimodal polyethylene
US9143657B2 (en) 2006-01-24 2015-09-22 Sharp Laboratories Of America, Inc. Color enhancement technique using skin color detection
US8121401B2 (en) * 2006-01-24 2012-02-21 Sharp Labortories of America, Inc. Method for reducing enhancement of artifacts and noise in image color enhancement
US8253975B2 (en) * 2006-05-24 2012-08-28 Xerox Corporation Method and apparatus for calibration of a color printer
US8941580B2 (en) * 2006-11-30 2015-01-27 Sharp Laboratories Of America, Inc. Liquid crystal display with area adaptive backlight
US8000554B2 (en) * 2007-04-04 2011-08-16 Xerox Corporation Automatic dynamic range adjustment in digital imaging
US8896892B2 (en) 2013-03-21 2014-11-25 Xerox Corporation System and method for color calibration of a color printing system with recording media brightness compensation
TWI536321B (en) * 2014-03-31 2016-06-01 鴻海精密工業股份有限公司 Method for coding and decoding by color

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612753A (en) * 1969-04-23 1971-10-12 Ventures Res & Dev Self-adaptive system for the reproduction of color
JPS55107209A (en) * 1979-02-13 1980-08-16 Toshiba Corp Strong magnetic field generator
DE3313392A1 (en) * 1982-04-14 1983-10-20 Fuji Photo Film Co., Ltd., Minami Ashigara, Kanagawa METHOD AND DEVICE FOR DIGITAL COLOR CORRECTION
US4500919A (en) * 1982-05-04 1985-02-19 Massachusetts Institute Of Technology Color reproduction system
DE3265413D1 (en) * 1982-05-29 1985-09-19 Hell Rudolf Dr Ing Gmbh Method for tone-value-dependent colour removal in four color printing
US4481532A (en) * 1982-06-28 1984-11-06 R. R. Donnelley & Sons Company Method of determining and storing color printing information
JPS60109968A (en) * 1983-11-18 1985-06-15 Canon Inc Color recording system
JPS60220659A (en) * 1984-04-17 1985-11-05 Fuji Photo Film Co Ltd Density adjusting method of colored picture output device
US4661843A (en) * 1984-07-16 1987-04-28 Kabushiki Kaisha Toshiba Color image copying apparatus
US4970584A (en) * 1985-05-15 1990-11-13 Ricoh Company, Ltd. Method and apparatus for the compensation of color detection
JPS61290866A (en) * 1985-06-19 1986-12-20 Matsushita Graphic Commun Syst Inc Color picture processing unit
JPH0614315B2 (en) * 1985-12-23 1994-02-23 富士ゼロックス株式会社 Color correction method
US4878178A (en) * 1985-12-25 1989-10-31 Sharp Kabushiki Kaisha Image processing device
US4853768A (en) * 1985-12-26 1989-08-01 Canon Kabushiki Kaisha Color image processing apparatus with linear masking circuit having coefficients which vary in accordance with the levels of color component signals
DE3629422C2 (en) * 1986-08-29 1994-02-17 Agfa Gevaert Ag Method and device for setting exposure values on a copier
GB2213674B (en) * 1988-01-11 1992-01-08 Xerox Corp Method for improving the printed appearance of computer-generated color images
JPH01255849A (en) * 1988-04-05 1989-10-12 Fuji Xerox Co Ltd Density correcting device in color image forming device

Also Published As

Publication number Publication date
CA2055058C (en) 1996-08-06
KR950008427B1 (en) 1995-07-28
EP0494034A2 (en) 1992-07-08
JPH04277974A (en) 1992-10-02
KR920013048A (en) 1992-07-28
EP0494034A3 (en) 1992-09-16
JP2575560B2 (en) 1997-01-29
US5293258A (en) 1994-03-08

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