Today's practicality of green-screen compositing is demonstrated by in a self-produced video. Top panel: A frame of Crosson in full-motion video as shot in his own living room. Bottom panel: Frame in the final version, in which Crosson, impersonating, 'appears' in the White House's.

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Chroma key compositing, or chroma keying, is a / technique for (layering) two or streams together based on color hues ( range). The technique has been used heavily in many fields to remove a from the subject of a photo or video – particularly the, and industries. A color range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene. The chroma keying technique is commonly used in and post-production. This technique is also referred to as color keying, colour-separation overlay ( CSO; primarily by the ), or by various terms for specific color-related variants such as green screen, and blue screen – chroma keying can be done with backgrounds of any color that are uniform and distinct, but green and blue backgrounds are more commonly used because they differ most distinctly in hue from most. Delphi Spin Edit With Real Life. No part of the subject being filmed or photographed may duplicate the color used as the backing.

It is commonly used for, wherein a is usually seen standing in front of a large map during live television, though in actuality it is a large blue or green background. When using a blue screen, different weather maps are added on the parts of the image where the color is blue. If the news presenter wears blue clothes, his or her clothes will also be replaced with the background video.

Chroma keying is also common in the entertainment industry for visual effects in and videogames. Contents • • • • • • • • • • • • • • • • • • History [ ] Predecessors [ ] Prior to the introduction of and, was used to introduce elements into a scene which were not present in the initial exposure. This was done using black draping where a green screen would be used today. First used this approach in 1898. In 1903, by used double exposure to add background scenes to windows which were black when filmed on set, using a to expose only the window areas.