Why are the curtains for filming mostly blue and green?

The green screen, the blue screen and the green screen are both background screens for shooting special effects shots. The actors performed in front of the blue screen and the green screen shot by the camera. The picture is processed in the computer, and the blue or green background is removed and replaced with other backgrounds. Blue is the complementary color of human skin, and it should be the easiest to pick out images with a blue screen as the background. In recent years, the green screen is more used for stunt shooting. Perhaps the fluorescent green used in the green screen is easier to separate from the foreground in the computer system, which is brighter and less prone to black edges. Blue screen is generally used in Asia, and green screen is generally used in Europe. Mainly because most Europeans' eyes are blue, if you use a blue screen, the eyes of the late actors will be easily cut off.