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Method of and system for determining a data model designed for being superposed with an image of a real object in an object tracking process

  • US 7,889,193 B2
  • Filed: 01/30/2007
  • Issued: 02/15/2011
  • Est. Priority Date: 02/03/2006
  • Status: Active Grant
First Claim
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1. A method of determining a data model of virtual information to be superposed with an image of a real object in an object tracking process, said method being performed on at least one digital computer configured to implement method steps comprising:

  • providing a three-dimensional CAD model (10) on said at least one digital computer wherein said three-dimensional CAD model (10) represents a real object to be tracked in a subsequent object tracking process;

    generating different synthetic two-dimensional views (31 to 34) from said CAD model (10) on said at least one digital computer;

    subjecting each generated view (31 to 34) to edge extraction on said at least one digital computer to determine at least one extracted edge (38, 39) in a respective view and determining which edges of the real object to be tracked are of relevance for said subsequent object tracking process; and

    ,transforming on said at least one digital computer said at least one extracted edge (38, 39) extracted from said respective view selected from said respective views (31 to 34) to a three-dimensional contour model (85, 91) corresponding to a data model.

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