blue screen technology

Cultural  

1. Used primarily in the making of movies, this technology allows actors to perform in front of a blue background screen, upon which background images are superimposed later by computer.

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Example Sentences

The series, which has taken to two years to complete, deploys blue screen technology and ultra high-screen cameras to track the "remarkable abilities and strategies of the tiniest creatures".

From BBC

Arthur Widmer, 92, special-effects pioneer who developed "blue screen" technology, enabling two images shot separately to be combined smoothly into one; in Los Angeles.

From Time Magazine Archive