If you've ever seen behind-the-scenes footage of a movie, TV show, or commercial, you have likely spotted giant solid green walls or curtains. These are what are referred to as green screens, and are ...

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 ... it is also used for creating special effects such as floating a car on the ocean. The foreground image is shot in front ...