Patent ID: 11950014
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. 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 a non-coded foreground in a signal produced by an image sensor, recording the images, of the camera by the coding, wherein the coding comprises the image being represented in a grid of coloured dots on a backdrop, the coloured dots respectively together with the backdrop surrounding them composing the colour of the image, and a colour filter being disposed in front of the image sensor, which colour filter tones down the colours of the coloured dots, the background being differentiated from the foreground by keying on the colour of the backdrop.