Method and device for reducing overshoot using perceptual quantizer

A display device based on a perceptual quantizer, comprising:

• a memory, configured to store a relationship among an initial grayscale level, a desired grayscale level and a target grayscale value, wherein the target grayscale value is configured to accelerate a conversion of the initial grayscale level to the corresponding desired grayscale level;
• the target grayscale value is established based on the initial grayscale level, the desired grayscale level and a visible area;
• a processor, coupled to the memory, and configured to confirm an actual target grayscale value to convert a pixel in the display from the initial grayscale level to the corresponding desired grayscale level according to the relationship, and use the actual target grayscale value to convert the pixel from the initial grayscale level to the corresponding desired grayscale level;
• and
• a liquid crystal display, configured to display an image, wherein a brightness of a pixel in the image is switched from the initial grayscale level to the desired grayscale level;
• wherein, the visible area is an area formed by a visible brightness difference of the perceptual quantizer and a visible reaction time on a coordinate system with time as a horizontal axis and brightness as a vertical axis;
• the visible brightness difference of the perceptual quantizer is a brightness change perceived by a human eye, and the visible reaction time is a reaction time for the human eye to perceive the brightness change.