A Realization Method of Display Color Gamut Mapping

Abstract

The invention discloses a method for realizing color gamut mapping of a display. The characteristic files ICC Profiles of a source color gamut display and a target color gamut display are measured respectively by using a colorimeter and its supporting software, and the AToB in the target color gamut display characteristic file is extracted. The tag data and the BToA tag data in the source color gamut display characteristic file are used to construct a four-dimensional lookup table, which reflects the direct mapping relationship between the source color gamut display and the target color gamut display color gamut. The mapping module changes the input signal value [R1G1B1] of the source color gamut display to [R2G2B2] by using the above lookup table and the OutputTable sub-tag data in the BToA tag through a three-dimensional interpolation algorithm, and completes the mapping process between the two color gamuts. The invention simplifies the display color gamut mapping process, reduces the requirement of the mapping module on hardware and software resources and reduces the design difficulty.

Description

technical field [0001] The invention relates to the field of display color management, in particular to a method for realizing color gamut mapping of a display. Background technique [0002] At present, the color gamut mapping of the display is mainly realized through the following two methods: one method is realized through the color management module CMM based on the operating system, using the characteristic files ICCProfile of the source color gamut display and the target color gamut display, firstly the source color gamut space Map to the link color gamut space PCS, and then map from the link color gamut space PCS to the target color gamut space. The color gamut mapping achieved by this method has good visual effect and high precision, but the color management module CMM is expensive and depends on the operating system; Another method is to manually measure several color blocks of the source color gamut display and the target color gamut display, and then use the obtain...

AI Technical Summary

Problems solved by technology

[0002] At present, the color gamut mapping of the display is mainly realized through the following two methods: one method is realized through the color management module CMM based on the operating system, using the characteristic files ICCProfile of the source color gamut display and the target color gamut display, firstly the source color gamut space Map to the link color gamut space PCS, and then map from the link color gamut space PCS to the target color gamut space. The color gamut mapping achieved by this method has good visual effect and high precision, but the color management module CMM is expensive and depends on the operating system; Another method is to manually measure several color blocks of the source color gamut display and the target color gamut display, and then use the obtained color block color parameters to generate the color gamut mapping relationship of the two displays. The color gamut mapping realized by this method does not depend on the operation system, but requires more manual participation, and the process is complicated

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