Gray is a color between black and white, so it's right to say that gray has no color... gray has no color! However, it is more accurate to say that gray has no hue, which is often referred to as no chroma. In fact, gray is a colorless color Grayscale is the brightness value of each pixel in an image, that is, the degree of black and white of each pixel in the image.
Levels of grayscale on a monitor
On a monitor, the higher the gray level, the richer the colors displayed, the more detailed the picture is, and the easier it is to express the rich details, the