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Method and apparatus for calibrating a display using an array of cameras

  • US 6,219,099 B1
  • Filed: 09/23/1998
  • Issued: 04/17/2001
  • Est. Priority Date: 09/23/1998
  • Status: Expired due to Term
First Claim
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1. A rear projection display system comprising:

  • a screen having a projection side and a viewing side;

    an imaging means for producing an image on the projection side of the screen;

    a camera means positioned on the projection side of the screen for capturing a capture image of at least a portion of the projection side of the screen;

    determining means coupled to said camera means for receiving said capture image, and for determining if the capture image has one or more non-desirable characteristic;

    said determining means further identifying a transformation function that can be applied to an input video signal to reduce the non-desirable characteristics; and

    processing means coupled to said imaging means and to said determining means for processing the input video signal using the transformation function to provide a transformed input video signal to said imaging means such that one or more of the non-desirable characteristics are reduced.

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