Blue screen and green screen commonly used in movies, who knows what the values of RGB and CMYK are?

The RGB and CMYK values of the blue screen are 120 and 60 respectively, and the RGB and CMYK values of the green screen are 100 and 50 respectively.

In the film stunt production, the blue screen or green screen is often used as the background, so as to synthesize the image later. From the experience, because blue is the complementary color of human skin, it should be the easiest to pick the image with the blue screen as the background, but in fact, I have seen more stunt shooting with green screen in recent years. Perhaps the fluorescent green used in the green screen is easier to separate from the foreground in the computer system, and at the same time, this color is brighter and it is not easy to produce black edges.

In the film and television stunt production, the blue screen or green screen is often used as the background, so as to synthesize the image later.

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.

Blue screen technology is also called color key technology. To put it simply, by shooting objects on the same color background, the foreground and background are distinguished by using the special hue information of the background color, so that the background is automatically removed and the foreground is retained.

It is widely used in the dynamic background synthesis of radio and television and the creation of movies and photography. Blue screen technology does not have to use a blue screen as a background. In principle, it is enough to choose the color that the foreground subject does not have as the background. The correct use of blue screen technology can not only extract the foreground correctly, but also extract the translucent region and shadow region in the foreground.

Extended data:

Be sure to choose the right background color when shooting. Avoiding the color of the background curtain in the subject is the key to success. For common portrait shooting, because people's skin is between red and yellow, red, orange and yellow curtains can't realize the function of automatic matting. Generally, blue, green and cyan curtains are used, depending on the color of the subject.

Your props need to pay attention to this, too. If the subject contains background color, the subject will become transparent and translucent after matting. If it is really unavoidable, it can be made up by post-repair.