according to an image to be displayed, determining a maximum brightness value of pixel points in a panel partition to obtain a backlight brightness value corresponding to a backlight partition, wherein the panel partition is area where the backlight of the backlight partition is incident on the panel;

acquiring a light diffusion curve of the backlight of the backlight partition incident on the panel partition corresponding to the backlight partition, wherein the light diffusion curve is a relationship curve between brightness value values of a plurality of the pixel points in a pixel group and diffusion distance, and the diffusion distance is the distance between the pixel point in the pixel group and a center of the panel partition, and the pixel point in the pixel group and the center of the panel partition are located on a same straight line;

calculating a compensation ratio of a target pixel according to the light diffusion curve, wherein the compensation ratio is a ratio of the maximum brightness value to an actual brightness value, when meeting a first backlight condition, the actual brightness value is a brightness value of the target pixel of the panel partition corresponding to the backlight partition, and when meeting a second backlight condition, the maximum brightness value is a brightness value of the target pixel point of the panel partition corresponding to the backlight partition, the first backlight condition is a case of the brightness value of the backlight partition is the backlight brightness value, and the second backlight condition is a case of the brightness value of the backlight partition is 255;

calculating a pixel compensation value of the target pixel according to the image to be displayed and the compensation ratio;

adjusting a pixel value of the target pixel point according to the pixel compensation value.