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Depth from focal gradient analysis using object texture removal by albedo normalization

  • US 5,878,152 A
  • Filed: 05/21/1997
  • Issued: 03/02/1999
  • Est. Priority Date: 05/21/1997
  • Status: Expired due to Term
First Claim
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1. A method for providing a range image of an object, the method comprising the acts of:

  • acquiring a structured illumination image of the object;

    acquiring a uniform illumination image of the object;

    performing albedo normalization using the structured illumination image of the object and the uniform illumination image of the object to provide an albedo-normalized image;

    processing the albedo-normalized image using a focus measure to provide a focal image;

    using the focal image to provide a range image.

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