WO2005065092A3 - Dynamic generation of color look-up tables - Google Patents

Dynamic generation of color look-up tables Download PDF

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Publication number
WO2005065092A3
WO2005065092A3 PCT/US2004/038938 US2004038938W WO2005065092A3 WO 2005065092 A3 WO2005065092 A3 WO 2005065092A3 US 2004038938 W US2004038938 W US 2004038938W WO 2005065092 A3 WO2005065092 A3 WO 2005065092A3
Authority
WO
WIPO (PCT)
Prior art keywords
dependent
data point
color space
lightness
independent
Prior art date
Application number
PCT/US2004/038938
Other languages
French (fr)
Other versions
WO2005065092A2 (en
Inventor
Cameron Altenhof-Long
Siu-Kei Tin
Original Assignee
Canon Kk
Cameron Altenhof-Long
Siu-Kei Tin
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 Canon Kk, Cameron Altenhof-Long, Siu-Kei Tin filed Critical Canon Kk
Publication of WO2005065092A2 publication Critical patent/WO2005065092A2/en
Publication of WO2005065092A3 publication Critical patent/WO2005065092A3/en
Priority to US11/978,525 priority Critical patent/US7575170B2/en
Priority to US11/978,522 priority patent/US7588188B2/en
Priority to US11/980,317 priority patent/US7770796B2/en

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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
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control

Abstract

Creating a look-up table which converts color image data from a device-independent color space to a device-dependent color space, by determining a range of lightness values corresponding to a lightness value of a target data point in device-independent color space, searching a predetermined set of data points in device-independent color space to obtain a selected set of data points, each selected data point having a lightness value within the determined range of lightness values and having corresponding device-dependent component values within a predetermined tolerance level of the component values of a previously-determined device-dependent data point, performing a weighted interpolation on the device-dependent component values corresponding to the selected set of data points to calculate an interpolated data point which is in device-dependent color space, and entering the interpolated device-dependent data point into a look-up table entry corresponding to the device-independent target data point.
PCT/US2004/038938 2000-11-24 2004-11-22 Dynamic generation of color look-up tables WO2005065092A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/978,525 US7575170B2 (en) 2000-11-24 2007-10-29 POS-based digital image capturing and processing system using automatic object detection, spectral-mixing based illumination and linear imaging techniques
US11/978,522 US7588188B2 (en) 2000-11-24 2007-10-29 Pos-based digital image capturing and processing system using automatic object detection, spectral-mixing based illumination and linear imaging techniques
US11/980,317 US7770796B2 (en) 2000-11-24 2007-10-30 Device for producing a laser beam of reduced coherency using high-frequency modulation of the laser diode current and optical multiplexing of the output laser beam

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/740,395 US7263218B2 (en) 2003-12-22 2003-12-22 Dynamic generation of color look-up tables
US10/740,395 2003-12-22

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US09/990,585 Continuation-In-Part US7028899B2 (en) 1997-09-16 2001-11-21 Method of speckle-noise pattern reduction and apparatus therefore based on reducing the temporal-coherence of the planar laser illumination beam before it illuminates the target object by applying temporal phase modulation techniques during the transmission of the plib towards the target
US10/989,220 Continuation-In-Part US7490774B2 (en) 2000-11-24 2004-11-15 Hand-supportable imaging based bar code symbol reader employing automatic light exposure measurement and illumination control subsystem integrated therein

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US10/186,268 Continuation-In-Part US7077319B2 (en) 2000-11-24 2002-06-27 Imaging engine employing planar light illumination and linear imaging
US11/305,895 Continuation-In-Part US7607581B2 (en) 2000-11-24 2005-12-16 Digital imaging-based code symbol reading system permitting modification of system features and functionalities

Publications (2)

Publication Number Publication Date
WO2005065092A2 WO2005065092A2 (en) 2005-07-21
WO2005065092A3 true WO2005065092A3 (en) 2006-09-21

Family

ID=34677869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/038938 WO2005065092A2 (en) 2000-11-24 2004-11-22 Dynamic generation of color look-up tables

Country Status (2)

Country Link
US (1) US7263218B2 (en)
WO (1) WO2005065092A2 (en)

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JP2005210526A (en) * 2004-01-23 2005-08-04 Konica Minolta Photo Imaging Inc Image processing apparatus, method, and program, image pickup device, and image data outputting method and program
JP4721398B2 (en) * 2004-03-31 2011-07-13 キヤノン株式会社 Color processing apparatus and method
JP4343752B2 (en) * 2004-03-31 2009-10-14 キヤノン株式会社 Color processing apparatus and method
US7103217B2 (en) * 2004-05-06 2006-09-05 Canon Kabushiki Kaisha Color appearance space to CMYK mapping
US7613363B2 (en) * 2005-06-23 2009-11-03 Microsoft Corp. Image superresolution through edge extraction and contrast enhancement
US20070252848A1 (en) * 2006-04-27 2007-11-01 Kabushiki Kaisha Toshiba Color conversion apparatus and color conversion method
US7933469B2 (en) * 2006-09-01 2011-04-26 Texas Instruments Incorporated Video processing
US8432572B2 (en) 2007-06-29 2013-04-30 Konica Minolta Laboratory U.S.A., Inc. Systems and methods of trapping for print devices
US8351076B2 (en) 2007-11-20 2013-01-08 Hewlett-Packard Development Company, L.P. Smoothed entries in a color transformation look-up table
US7903286B2 (en) * 2008-03-27 2011-03-08 Konica Minolta Systems Laboratory, Inc. Systems and methods for color conversion
US8570340B2 (en) 2008-03-31 2013-10-29 Konica Minolta Laboratory U.S.A., Inc. Systems and methods for data compression
US8699042B2 (en) 2008-06-12 2014-04-15 Konica Minolta Laboratory U.S.A., Inc. Systems and methods for multi-mode color blending
US8379266B2 (en) * 2008-09-30 2013-02-19 Konica Minolta Laboratory U.S.A., Inc. Systems and methods for generating luminance look-up table based on color component values
US8537425B2 (en) * 2008-09-30 2013-09-17 Konica Minolta Laboratory U.S.A., Inc. Method for optimizing the search for trapping regions
US9384427B2 (en) * 2008-12-16 2016-07-05 Konica Minolta Laboratory U.S.A., Inc. Systems and methods for optimizing pixel based raster trapping
JP6733526B2 (en) * 2016-11-30 2020-08-05 セイコーエプソン株式会社 Color system conversion table generation method and color system conversion table generation program
US11057543B2 (en) 2018-03-12 2021-07-06 Hewlett-Packard Development Company, L.P. Updating a lookup table for an imaging system

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US5719956A (en) * 1994-10-17 1998-02-17 Fuji Xerox Co., Ltd. Image processing apparatus with separate color conversion for CMY signals and K signal
US5786908A (en) * 1992-01-15 1998-07-28 E. I. Du Pont De Nemours And Company Method and apparatus for converting image color values from a first to a second color space

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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5786908A (en) * 1992-01-15 1998-07-28 E. I. Du Pont De Nemours And Company Method and apparatus for converting image color values from a first to a second color space
US5719956A (en) * 1994-10-17 1998-02-17 Fuji Xerox Co., Ltd. Image processing apparatus with separate color conversion for CMY signals and K signal

Also Published As

Publication number Publication date
US7263218B2 (en) 2007-08-28
US20050135672A1 (en) 2005-06-23
WO2005065092A2 (en) 2005-07-21

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