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METHOD OF ALIGNING INTRA-ORAL DIGITAL 3D MODELS

  • US 20160070821A1
  • Filed: 09/08/2014
  • Published: 03/10/2016
  • Est. Priority Date: 09/08/2014
  • Status: Active Grant
First Claim
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1. A method for aligning a digital 3D model of teeth, comprising steps of:

  • receiving a digital 3D model of teeth represented by a 3D mesh in random alignment;

    computing surface normals for at least a subset of each face of the mesh;

    computing an aggregate of the surface normals to determine a representative normal direction; and

    computing and applying a rotation matrix to align the representative normal direction with a desired axis within a 3D coordinate system.

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