CA2055058A1 - Automatic correction for color printing - Google Patents
Automatic correction for color printingInfo
- 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
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.
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)
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)
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 |
-
1991
- 1991-11-06 CA CA002055058A patent/CA2055058C/en not_active Expired - Lifetime
- 1991-11-07 JP JP3318596A patent/JP2575560B2/en not_active Expired - Lifetime
- 1991-11-29 EP EP19910480177 patent/EP0494034A3/en not_active Withdrawn
- 1991-11-29 KR KR1019910021775A patent/KR950008427B1/en not_active IP Right Cessation
-
1992
- 1992-10-26 US US07/966,677 patent/US5293258A/en not_active Expired - Lifetime
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |