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Visual target tracking

  • US 9,842,405 B2
  • Filed: 10/23/2013
  • Issued: 12/12/2017
  • Est. Priority Date: 01/30/2009
  • Status: Active Grant
First Claim
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1. A method of tracking a human subject, the method comprising:

  • obtaining an observed depth image including the human subject from a depth camera;

    generating a machine-readable model representing the human subject from the observed depth image;

    deriving a synthesized depth image from the machine-readable model representing the human subject, the synthesized depth image including a two-dimensional matrix of synthesized pixels, each synthesized pixel in the two-dimensional matrix of synthesized pixels including a depth value and having a same pixel address as a corresponding pixel of the observed depth image;

    determining, for each synthesized pixel, a depth difference between a depth of that synthesized pixel and a depth of a corresponding pixel from a subsequent observed depth image; and

    adjusting the machine-readable model representing the human subject into an adjusted pose based on the depth difference and different pixel cases for different ones of a plurality of synthesized pixels.

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