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Optimal setting method for three primary colors of display equipment with large color gamut

A technology for display equipment and three primary colors, applied in color TV, static indicators, cathode ray tube indicators, etc., can solve the problem of optimal setting of chromaticity coordinates of three primary colors without large color gamut display equipment

Inactive Publication Date: 2014-11-19
ZHEJIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, neither academia nor industry has proposed a method for optimizing the chromaticity coordinates of the three primary colors of a display device with a large color gamut.

Method used

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  • Optimal setting method for three primary colors of display equipment with large color gamut
  • Optimal setting method for three primary colors of display equipment with large color gamut
  • Optimal setting method for three primary colors of display equipment with large color gamut

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Embodiment Construction

[0036] Taking a large color gamut display HP2840zx with an 8-bit graphics card as an example, optimizing the chromaticity coordinates of red, green and blue primary colors includes the following steps:

[0037] (1) By adjusting the control menu settings of the HP2840zx display, the output brightness is the highest level, and the output color gamut is the largest range.

[0038] (2) Use a spectroradiometer Konica-Minolta CS-2000 to measure the CIE1931XYZ tristimulus values ​​of the red, green, and blue primary colors of the HP2840zx display in step 1, and record them as (X RM ,Y RM ,Z RM ), (X GM ,Y GM ,Z GM ), (X BM ,Y BM ,Z BM ).

[0039] (3) The CIE1931XYZ tristimulus values ​​of the red, green and blue primary colors obtained in step 2 are converted to the corresponding chromaticity coordinates (u' ,v').

[0040] x = X X + Y + Z ...

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Abstract

The invention discloses an optimal setting method for three primary colors of display equipment with a large color gamut. The method comprises the following steps: firstly, a certain number of sampling points of the three primary colors namely red, green and blue are selected in a CIE 1976UCS uniform chromaticity scale diagram to constitute imaginary color gamuts with different settings; through chromaticity characterization models built for the working states of the imaginary color gamuts, CIELAB color differences of three typical memory colors namely skin color, grass green and skyblue and CIELAB reference values thereof are calculated, so that the color preference index of each imaginary color gamut is obtained, therefore, the imaginary color gamut with the highest color preference index is selected, and the chromaticity coordinates of the three primary colors are used as optimal settings. According to the invention, the problems of color distortion when a television signal and a digital image based on small color gamut are transmitted to the display equipment with the large color gamut is solved, the operation is simple, visual evaluation is not required and the practicability is high.

Description

technical field [0001] The invention relates to a digital image display device with large color gamut characteristics, in particular to an optimal setting method for the chromaticity coordinates of three primary colors of the large color gamut display device. Background technique [0002] With the technological innovation of the display industry, display devices with a large color gamut are flourishing and rapidly applied, so that people can obtain brighter and more colorful visual effects when watching. However, currently all color standards for TV signal playback and digital image display are defined based on the traditional small color gamut space, that is, the sRGB standard color gamut. When the TV signals or digital images generated under the small color gamut color standard are respectively transmitted to a large color gamut display device, if they are directly displayed without any processing, it will bring a large color shift, that is, color distortion, thus Serious...

Claims

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Application Information

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IPC IPC(8): H04N5/44H04N17/04G09G5/02
Inventor 徐海松宫睿徐鹏
Owner ZHEJIANG UNIV
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