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System and method providing improved head motion estimations for animation

  • US 20050008196A1
  • Filed: 08/04/2004
  • Published: 01/13/2005
  • Est. Priority Date: 12/06/2000
  • Status: Active Grant
First Claim
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1. A method to estimate head motion between two images of a face, the method comprising operations of:

  • identifying locations of a plurality of distinct facial features in the two images, the locations corresponding to a number of unknowns determined upon estimation of head motion, the number of unknowns being determined by a number of equations;

    converting the identified locations into a set of physical face parameters based on the symmetry of the distinct facial features, the set of physical face parameters reducing the number of unknowns as compared to the number of equations used to determine the unknowns; and

    estimating head motion from identified points in the two images, the identified points being based on the set of physical face parameters.

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