Liquid crystal display screen color homogenization method and device based on Mini-LED backlight

The invention relates to an image processing technology, and discloses a liquid crystal display screen color homogenization method and device based on Mini-LED backlight, and the method comprises the steps: generating a light control mapping relation of a liquid crystal display screen according to display screen pixels and a light control region of the Mini-LED backlight; extracting color features of each display screen pixel, and calculating a color gamut boundary value of each display screen pixel according to the color features; positioning color difference pixels in the liquid crystal display screen according to the color gamut boundary value and a color threshold value to obtain a color difference area; calculating a first color value and a second color value of a first difference area and a second difference area in the color difference areas; and calculating a color homogenization value in the color difference region according to the first color value and the second color value, and performing color ho