The grayscale of the LED mesh screen can also be considered as the brightness, which is simply the depth of the color. In fact, in our daily life, through the combination of the three primary colors, various colors can be formed. The greater the number of grayscales that a product can display, the richer the color expression of the product and the ability to achieve stronger color levels.
For example, if the three primary colors are 16-level grayscale, the colors that can be displayed are 16×16×16=4096 colors. However, 256-level grayscale is very common in current products. The so-called color or gray level refers to the difference between the brightness and darkness of the pixels displayed in the black and white display, which is expressed as the difference in color in the color display. The more gray levels, the clearer and more realistic the image level. The gray level depends on the number of bits of the refresh memory cell corresponding to each pixel and the performance of the display itself. If the color of each pixel is represented by a 16-bit binary number, we call it a 16-bit map, which can express 2 to the 16th power, that is, 65536 colors.
If each pixel is represented by a 24-bit binary number, we call it a 24-bit map, which can express 2 to the 24th power, that is, 16777216 colors. The grayscale is no color, and the RGB color components are all equal. If it is a binary grayscale image, its pixel value can only be 0 or 1, and we say its grayscale is 2. Let's illustrate with an example: For an image with 256 levels of grayscale, RGB(100, 100, 100) represents grayscale of 100, RGB(50, 50,50) represents grayscale of 50, and grayscale refers to black and white The color depth of a point in an image generally ranges from 0 to 255, white is 255, and black is 0, so black and white images are also called grayscale images, which are widely used in the fields of medicine and image recognition. The grayscale of color images is actually in The pixel value after conversion to black and white image (it is a generalized formulation), the conversion method depends on the application field, generally according to the weighted method conversion, the ratio of R, G, B is generally 3:6:1.