单词	chromakey
释义	chromakey /ˈkrəʊməkiː / noun [mass noun] A digital technique by which a block of a particular colour (often blue or green) in a film or video image can be replaced by another colour or image, enabling, for example, a weather forecaster to appear against a background of a computer-generated weather map: the weatherman is gesturing at a blank wall, and the image is inserted by chromakey... During rehearsals for the main ITV1 programmes, the channel decamps to a small single-camera chromakey studio, which wasn't too bad with the old look as you almost couldn't tell to look at it visually. Arm yourself with Eejit's ‘Film Lingo’ and you'll soon know your cookie from your cutaway, your capture card from your chromakey, so you can easily cut to your closeup. You've seen chromakey in action, even if you might not know what it is. verb (chromakeys, chromakeying, chromakeyed) [with object] Manipulate (an image) using the chromakey technique: (as noun chromakeying) examples of chromakeying on television... The anchor sergeant is shot against a blue screen, and chromakeyed in post over the virtual set, which we created in Strata 3DPro. But for those whose editing programs won't handle the pre-keyed footage, we've chromakeyed it so you can key it yourself. If the polarity of the area signal is reversed, the region which can be chromakeyed is reversed as a matter of course.
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