Green screens, or chroma key, to give the effect its real ... allowing both a background and foreground image to be filmed using two cameras and a dichroic beam splitter. The background image ...

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

The technique is also known as chroma key compositing, and it’s generally used to merge two images or videos together ... actor filmed in front of a green background. Using video editing ...