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SIGNALING DEVICE POSITION DETERMINATION

  • US 20120026084A1
  • Filed: 03/31/2009
  • Published: 02/02/2012
  • Est. Priority Date: 03/31/2009
  • Status: Abandoned Application
First Claim
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1. A system, comprising:

  • a light source;

    a user positioned signaling device comprising a retroreflective structure and a polarization retarder;

    an image capture device that captures images of the signaling device; and

    an image processor that processes the captured images and determines a position of the signaling device based, at least in part, on light polarized and reflected by the signaling device.

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