WO2005109856A3 - Gamut mapping with primary color rotation - Google Patents

Gamut mapping with primary color rotation Download PDF

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Publication number
WO2005109856A3
WO2005109856A3 PCT/US2005/015674 US2005015674W WO2005109856A3 WO 2005109856 A3 WO2005109856 A3 WO 2005109856A3 US 2005015674 W US2005015674 W US 2005015674W WO 2005109856 A3 WO2005109856 A3 WO 2005109856A3
Authority
WO
WIPO (PCT)
Prior art keywords
hue
destination
primary
source
mapping
Prior art date
Application number
PCT/US2005/015674
Other languages
French (fr)
Other versions
WO2005109856A2 (en
Inventor
Sharon A Henley
Rocklin J Sloan
Original Assignee
Canon Kk
Sharon A Henley
Rocklin J Sloan
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, Sharon A Henley, Rocklin J Sloan filed Critical Canon Kk
Publication of WO2005109856A2 publication Critical patent/WO2005109856A2/en
Publication of WO2005109856A3 publication Critical patent/WO2005109856A3/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
    • 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
    • H04N1/6058—Reduction of colour to a range of reproducible colours, e.g. to ink- reproducible colour gamut

Abstract

Gamut-mapping from a source device to a destination device is performed in a perceptually linear color space such as CIECAM02 by separating a source image into primary color components and processing each primary component separately by mapping a source primary hue leaf with a destination primary hue leaf. The mapped primary components are then summed and a resultant destination image is obtained. Alternatively, hue rotation is performed by determining a relative position of an input color between the nearest primary and the nearest secondary color in a source hue wheel. The determined relative position in the source hue wheel is used to find a corresponding location in a destination hue wheel so that the hue angle for obtaining the destination hue leaf can be determined. In both processes, the source and destination hue leafs are mapped using a cusp-to cusp mapping with a shear mapping process being used to pull in the remaining colors. Finally, results of the mapping process are converted from device-independent color appearance space values to tristimulus values, and from tristimulus values to a color space of the destination device.
PCT/US2005/015674 2004-05-06 2005-05-06 Gamut mapping with primary color rotation WO2005109856A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/840,564 US7602537B2 (en) 2004-05-06 2004-05-06 Gamut mapping with primary color rotation
US10/840,564 2004-05-06

Publications (2)

Publication Number Publication Date
WO2005109856A2 WO2005109856A2 (en) 2005-11-17
WO2005109856A3 true WO2005109856A3 (en) 2006-01-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/015674 WO2005109856A2 (en) 2004-05-06 2005-05-06 Gamut mapping with primary color rotation

Country Status (2)

Country Link
US (2) US7602537B2 (en)
WO (1) WO2005109856A2 (en)

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EP3110128A1 (en) 2015-06-25 2016-12-28 Thomson Licensing Color gamut mapping based on the mapping of cusp colors obtained through simplified cusp lines
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EP3301901A1 (en) 2016-09-28 2018-04-04 Thomson Licensing Determination of chroma mapping functions based on hue angular sectors partitioning the mapping color space
EP3301902A1 (en) 2016-09-28 2018-04-04 Thomson Licensing Lightness independent non-linear relative chroma mapping
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Also Published As

Publication number Publication date
US7663641B2 (en) 2010-02-16
WO2005109856A2 (en) 2005-11-17
US20050248784A1 (en) 2005-11-10
US7602537B2 (en) 2009-10-13
US20060221396A1 (en) 2006-10-05

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