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CALIBRATION METHOD FOR VIDEO AND RADIATION IMAGERS

  • US 20110024611A1
  • Filed: 07/29/2009
  • Published: 02/03/2011
  • Est. Priority Date: 07/29/2009
  • Status: Active Grant
First Claim
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1. An apparatus for detecting a radiation source, said apparatus comprising:

  • a visible light camera that detects electromagnetic radiation in a visible range;

    a high energy radiation imager that detects high energy radiation; and

    an image analysis device that is configured to execute a program of machine-executable instructions to calibrate high energy radiation imager pixels of said high energy radiation imager to a real-world coordinate of a moving vehicle, wherein said program includes the steps of;

    determining a visible light camera pixel coordinate of a moving vehicle;

    determining a real-world coordinate of said moving vehicle based on said visible light camera pixel coordinate;

    determining a high energy radiation imager pixel position based on said real-world coordinate of said moving vehicle; and

    determining a scale parameter for said high energy radiation imager based on said real-world coordinate, wherein said scale parameter correlates a change in said high energy radiation imager pixel position to a change in an x-coordinate of said real-world coordinate in a real-world coordinate system having an x-axis that is parallel to an image plane of said high energy radiation imager.

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