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METHODS FOR GAS DETECTION USING STATIONARY HYPERSPECTRAL IMAGING SENSORS

  • US 20110081040A1
  • Filed: 10/07/2009
  • Published: 04/07/2011
  • Est. Priority Date: 10/07/2009
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • producing a first hyperspectral imaging (HSI) data cube of a location at a first time using data from a HSI sensor;

    producing a second HSI data cube of the same location at a second time using data from the HSI sensor;

    subtracting on a pixel-by-pixel basis the second HSI data cube from the first HSI data cube to produce a raw difference cube;

    calibrating the raw difference cube to produce a calibrated raw difference cube;

    selecting at least one desired spectral band based on a gas of interest;

    producing a detection image based on the at least one selected spectral band and the calibrated raw difference cube;

    examining the detection image to determine presence of the gas of interest; and

    outputting a result of the examination.

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