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Frequency-based surveillance imaging

  • US 20060164286A1
  • Filed: 01/21/2005
  • Published: 07/27/2006
  • Est. Priority Date: 01/21/2005
  • Status: Abandoned Application
First Claim
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1. A method of surveilling a subject comprising:

  • irradiating at least a portion of the subject with electromagnetic radiation in at least first and second different frequency ranges having frequencies that are more than about 100 MHz and less than about 2 THz;

    receiving the irradiated electromagnetic radiation reflected from the subject;

    producing, from the received electromagnetic radiation, first image data representative of a first image of at least the portion of the subject based at least in part on reflectivity of the electromagnetic radiation in the first frequency range;

    producing, from the received electromagnetic radiation, at least second image data representative of at least a second image of at least the portion of the subject based at least in part on reflectivity of the electromagnetic radiation over at least the second frequency range; and

    relating at least the first and second image data.

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