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Systems and methods for capturing motion in three-dimensional space

  • US 9,070,019 B2
  • Filed: 12/21/2012
  • Issued: 06/30/2015
  • Est. Priority Date: 01/17/2012
  • Status: Active Grant
First Claim
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1. A method of locating a control object appendage in three dimensional (3D) space, including:

  • recording images of a control object appendage in 3D space using at least two geometrically distinct predetermined vantages;

    calculating by a processor four co-planar tangents to observed edges of the control object appendage from the recorded images;

    fitting an ellipse by a processor to the cross-section of the control object appendage by selecting the ellipse from a family of ellipses that fit the four co-planar tangents using an assumed parameter;

    repeatedly fitting contiguous cross-sections to the control object appendage; and

    constructing the control object appendage in 3D space from the contiguous cross-sections.

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