Blue Screen

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Blue Screen

In photography and video making, a physical blue screen against which a shot is taken. The screen enables a second shot (usually a background) to be combined with the first image. Blue screens are used in filming to make an actor look as if he/she is somewhere else. This can be less expensive than shooting on location, though blue screens are also used to superimpose very expensive CGI images into the film. A blue screen may also be a green screen.
References in periodicals archive ?
Students could then hang the color key and document how that fixture's angle would be drawn on the traditional color key.
For a class of 30 students, you will need 5 kg of non-toxic, non-hardening modeling clay (450 g each of 11 colors), as well as 30 index cards for the color keys and 30 plastic bags for storage.
--Switch the color boxes next to "Very appealing" and "Somewhat appealing" in the color key ONLY.
Color intensity -- indicating how many of a particular type of microbe were in a cultured sample -- is visually matched against a color key. Another set of diagnostic techniques involving fluorescent staining of microbial antibodies allows the counting of actual organisms in a sample.
The text's two-color layout contains color key terms, tables, charts, and margin notes, plus b&w photos and screenshots.
The color key shows how many votes each state gained or lost, or if there has been no change.
The book's inside cover offers a color key to symbols used in the book's many process diagrams.