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Systems and methods for using visual hulls to determine the number of people in a crowd

  • US 6,987,885 B2
  • Filed: 06/14/2004
  • Issued: 01/17/2006
  • Est. Priority Date: 06/12/2003
  • Status: Expired due to Fees
First Claim
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1. A method for determining the number of a plurality of objects in a working volume, the method comprising:

  • determining a first planar projection of a first visual hull of the plurality of objects, the planar projection comprising a first set of one or more shapes; and

    determining a first set of one or more lower bounds, a lower bound being associated with a shape in the first set of one or more shapes, a lower bound being a lowest number of objects that can be contained in the associated shape.

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