Keying is the process of isolating a single color or brightness value in an electronic image and using software to make the value transparent, allowing another image to show through the affected areas. Luminance keying, or lumakeying, is the process of keying out a brightness value or range, like black or white. Luminance keys are often used for applying mattes. In the Hollywood world, blue screens are far more common then green. The biggest factor is contrast. In order to isolate one area from the rest, the background color must be distinctly different. Bright green beats blue partially because it is not a color commonly worn by talent. Chromakeying identifies a specific color to
Keying is the process of isolating a single color or brightness value in an electronic image and using software to make the value transparent, allowing another image to show through the affected areas. Luminance keying, or lumakeying, is the process of keying out a brightness value or range, like black or white. Luminance keys are often used for applying mattes. In the Hollywood world, blue screens are far more common then green. The biggest factor is contrast. In order to isolate one area from the rest, the background color must be distinctly different. Bright green beats blue partially because it is not a color commonly worn by talent. Chromakeying identifies a specific color to