Green screens, or chroma key, to give the effect its real name, relies on the background using a colour not present in the main subject of the shot. This can then be detected electronically or in ...

(2) Also called "chroma key," it is a technique for superimposing ... When both images are combined, the background pixel takes precedence wherever a pixel of the solid color is found in the ...

The technique is also known as chroma key compositing ... Usually you see an actor filmed in front of a green background. Using video editing software, the editor can then replace that specific ...