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Method for determining the 3D coordinates of the surface of an object

  • US 7,436,522 B2
  • Filed: 05/18/2006
  • Issued: 10/14/2008
  • Est. Priority Date: 05/18/2005
  • Status: Active Grant
First Claim
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1. A method for determining the 3D coordinates of the surface of an object, comprising the steps of:

  • measuring the 3D coordinates of a partial surface (5,6) of the object (1) by a 3D measuring device (3);

    measuring the position and orientation of said 3D measuring device by a tracking system (2), wherein said determination is effected by at least one detector placed on said 3D measuring device for detection by said tracking system (2);

    determining the 3D coordinates of an adjacent partial surface (7) of the object (1) by the 3D measuring device;

    performing a matching method to determine and minimize an error function of a detector (4) of the 3D measuring device and/or tracking system for certain of said 3D coordinates measured at said steps (a) and (c) that fall into a overlap region between said partial surface (5, 6) and said adjacent partial surface (7);

    wherein said matching method minimizes the different measured distances of said certain 3D coordinates of points in said overlap region.

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