UNIVERSAL GAMUT MAPPING AND COLOR MANAGEMENT METHOD

摘要

A universal gamut mapping and color management method comprises: using calibration color targets with the same structures, and using a uniform principle and method to perform coordinate transformation of a color space and gamut mapping between devices; setting a channel primary chroma parameter, and forming a reversible power function relationship among the channel primary chroma parameter, a reference primary chroma parameter and a drive parameter; creating a method for generating a pure gray scale, and generating a gray core parameter and a gray balance power function according to the method; performing gamma correction on the gray scale of the image; creating a LIU's D| x| y| profile connection color space; creating a color space mapping method that can complete gamut mapping and gamma correction at the same time and can be implemented by means of a fast analytical algorithm; and creating a method for precisely transforming a primary chroma value, calculated according to a LIU's gamut mapping equation, to a drive input value. The method eliminates the red shift interference; three primaries maintain respective independence and channel independence during color composition and decomposition; the gray component is duplicated in priority; the luminance and chroma information are transmitted following the principle that the luminance is kept independent; the universality is desirable.