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Production of composite images

  • US 4,202,008 A
  • Filed: 03/29/1977
  • Issued: 05/06/1980
  • Est. Priority Date: 03/29/1976
  • Status: Expired due to Term
First Claim
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1. A method for producing composite images in which a foreground camera views a subject in front of a colored screen, a background camera views an image of a background scene, and a mixing circuit derives from the foreground and background cameras a composite signal which represents the foreground subject but in which the background signal is substituted for the foreground camera signal whenever the latter represents said colored screen, the method further comprising the steps of:

  • generating signals responsive to panning and tilting movements of the foreground camera, said signals representing the extend of such movements; and

    mounting an opaque picture constituting the background image on a support so as to be viewed directly by the back-ground camera and moving said picture in first and second mutually perpendicular directions in a plane perpendicular to the optical axis of the background camera in response to said signals generated in response to panning and tilting movements so that the image provided by the background camera appears to move in a direction opposite to the direction of panning or tilting movement of the foreground camera, said opaque picture being larger than the shot viewed by said background camera.

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