chromakey (KROH-muh-kee) - n., the use of a particular color as a key in a TV studio in order to allow one image to be partially and seamlessly superimposed upon another.
Usually a live-action foreground on a background shot taken elsewhere. The general term for bluescreen and greenscreen, which are the two most commonly used key colors (because they are furthest from skin-tones), and also called color keying and colour-separation overlay. Using this technique to compose a shot is sometimes called keying. Coined in 1957 as Chroma-Key, a trademark of RCA, though the technique (as blue-screen) was developed in the 1930s.
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Usually a live-action foreground on a background shot taken elsewhere. The general term for bluescreen and greenscreen, which are the two most commonly used key colors (because they are furthest from skin-tones), and also called color keying and colour-separation overlay. Using this technique to compose a shot is sometimes called keying. Coined in 1957 as Chroma-Key, a trademark of RCA, though the technique (as blue-screen) was developed in the 1930s.
---L.