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Augmented reality technology

  • US 6,625,299 B1
  • Filed: 04/06/1999
  • Issued: 09/23/2003
  • Est. Priority Date: 04/08/1998
  • Status: Expired due to Fees
First Claim
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1. A fiducial-based tracker system, comprising:

  • (a) at least one optical sensor for detecting a pattern of fiducials disposed on an object surface, said pattern of fiducials including a hard fiducial pattern and a soft fiducial pattern, both of said hard fiducial and said soft fiducial patterns having a known shape and arrangement, said at least one optical sensor having a position and an orientation with respect to said pattern of fiducials on said object surface, said at least one optical sensor scanning said pattern of fiducials and detecting fiducial edges; and

    (b) a processor connected to said at least one optical sensor, said processor identifying said position and said orientation of said at least one optical sensor with respect to said object surface by matching a detected pattern of fiducials with a reference pattern of fiducials.

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