Primary color optimization method for multi-primary color display and display device

Abstract

The invention discloses a primary color optimization method for a multi-primary color display, which comprises the steps of firstly determining the primary color number, white spot color coordinates and white spot brightness of the display; then selecting a uniform color space (UCS) for gamut evaluation and a target gamut, giving the boundary of the target gamut in the uniform color space and thegamut volume, and selecting a value range which can be a continuous or discrete value range and an initial value of a color coordinate of each primary color light source; then calculating the shape ofa display gamut accomplished by the primary color coordinate combination in the selected uniform color space, normalizing the white spot brightness of the display gamut to the white spot of the target gamut, and calculating the volume of an intersection area of the display gamut and the target gamut; and setting a reasonable stopping condition through maximizing the volume of the intersection area or the ratio of the volume of the intersection area and the volume of the target gamut, and obtaining the optimized primary color coordinates and the brightness. The invention further discloses multi-primary color display device.

Description

technical field [0001] The invention belongs to the field of display chromaticity, in particular to a primary color optimization method suitable for multi-primary color display and a display device realized by the method. Background technique [0002] With the development of display technology, displays can achieve larger and larger color gamuts, and people's demand for displays with large color gamuts is also becoming more and more urgent. The current common display color gamut standard is sRGB, but this standard only covers a small part of the colors in the chromaticity diagram. The current NTSC color gamut, which is the target of display color gamut evaluation, can only cover less than half of the area of ​​the chromaticity diagram. The current display standard with the largest color gamut area is the Rec.2020 standard, but it can only cover 73.8% of the area of ​​the xy chromaticity diagram. Moreover, most of the current displays cannot meet this color gamut size stand...

AI Technical Summary

Problems solved by technology

[0010] Second, when optimizing the primary color, the exhaustive method is generally used to search for the optimal color gamut, which requires a large amount of calculation

However, with the advancement of display light source technology, more and more light source colors can be selected, and the central wavelength of the spectrum is getting denser, and the number of corresponding primary color combinations increases exponentially; and when the number of primary colors is greater than 3, due to Multi-primary color display brings the problem of metamerism. The brightness of the primary color cannot be uniquely determined by the coordinates of the white point. It is necessary to optimize the brightness to determine the maximum color gamut in the uniform color space, which further increases the amount of calculation.

In this case, using the traditional exhaustive method obviously cannot effectively find the optimal solution

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