Low gray scale white balance control method, control system and display

Abstract

The invention discloses a low gray scale white balance control method and control system and a displayer. The low gray scale is a gray scale lower than a gray scale threshold nmax, the control method comprises the following steps: S1, adjusting the brightness of a pixel to target brightness; S2, calculating chroma (x, y) of all pixel combinations satisfying a chromatic aberration delta E change scope: the expression is described in the specification, and the expression is described in the specification from a 0 gray scale to a nmax gray scale at the target brightness, wherein the chromatic aberration formula is delta E = ((x -xtarget) 2 + (y- ytarget) 2) 1 / 2, K is a positive integer, the chroma of the pixel at a 255 gray scale is (x255, y255) = (xtarget ytarget), and E0 is a chromatic aberration threshold; and S3, establishing a white balance table in which the pixel combinations satisfy the chromatic aberration delta E change scope, and carrying out low gray scale white balance control according to the white balance table. According to the low gray scale white balance control method disclosed by the invention, a target value of the chroma (x, y) of the low gray scale is calculated by the chromatic aberration formula, and the purpose of perfecting the low gray scale white balance can be fulfilled.

Description

technical field [0001] The invention relates to the technical field of image display, in particular to a low gray scale white balance control method, control system and display. Background technique [0002] The current image processing technology is to divide the display area on the liquid crystal panel into many pixels (Pixels), and each pixel has sub-pixels of three primary colors such as red, green and blue. Since all colors of visible light can be produced by mixing red, green, and blue light, the color to be represented by a pixel can be constructed by controlling the brightness and darkness of the red, green, and blue sub-pixels. [0003] In order to describe colors more properly, the International Commission on Illumination (CIE for short) proposed the CIE1931XYZ Color Space (CIE XYZ Color Space). This color space regards red, green, and blue as three primary colors, and all other colors can be formed by mixing three primary colors. When a standard observer sees tw...

AI Technical Summary

Problems solved by technology

[0006] ginseng figure 1 As shown, in the prior art, after the manual white balance adjustment is completed, the chromaticity (x, y) of the low gray scale cannot reach the level close to the chromaticity (x, y) of the high gray scale, in other words, This is a doomed result due to the limitation of the brightness curve of gamma=2.2

Images