Method for differentiating between background and foreground of scenery and also method for replacing a background in images of a scenery

摘要

Disclosed is a method for differentiating between background and foreground of a scenery in images recorded by an electronic camera, the background showing an arbitrary image coded with a coding such that the image is visible for a direct observer of the background, and the background being differentiated from the non-coded foreground in a signal produced by an image sensor. The images of the camera are recorded by means of the coding which includes the background displaying the image only with colours selected from at least one range of the visible spectrum at a spacing from each other, and light emanating from the background running through a colour filter before impinging on the image sensor. The colour filter filters out or tones down these ranges of the visible spectrum, and lets other ranges of the visible spectrum pass through without being toned down.