Introduction of RGB color model

RGB color model, also known as RGB color model or red, green and blue color model, is an additive color model, which adds red, green and blue colors in different proportions to produce various colors.

The main purpose of RGB color model is to detect, represent and display images in electronic systems (such as televisions and computers), but it is also used in traditional photography. Before the electronic age, based on human perception of color, RGB color model has a solid theoretical support.

Extended data

The tricolor principle is not caused by physical reasons, but by physiological reasons. There are several kinds of cone-shaped photoreceptor cells in human eyes, which are most sensitive to yellow-green, green and blue-purple (or purple) light (frequencies are 532, 562 and 7 14 THz respectively). If the cells that distinguish between yellow and green are stimulated a little more than the cells that distinguish between green, people feel yellow.

If the cells that distinguish between blue and purple are stimulated much more than those that distinguish between blue, people will feel red. Although three kinds of cells are not the most sensitive to RGB, these three kinds of light can stimulate three kinds of cone cells respectively.

Baidu Encyclopedia-Tricolor Light Mode