chroma key

(redirected from Colour keying)

chroma key

n.
A technique in video and photography editing in which portions of an image containing a preselected color, such as a bluescreen background, are replaced with material from a separate image using an electronic color filter.

[chroma + key, to chromakey; see key1.]
References in periodicals archive ?
Colour keying of both analogue and DVI sources is possible with the unit, which supports one dual RBG or DVI channel and a second RGB input; the combined output signal can be either RGB or DVI.