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Method and apparatus for assessing characteristics of liquids

  • US 8,116,428 B2
  • Filed: 09/17/2007
  • Issued: 02/14/2012
  • Est. Priority Date: 09/18/2006
  • Status: Expired due to Fees
First Claim
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1. Method for performing security screening at a security checkpoint, comprising:

  • a) performing an X-ray inspection on hand carried baggage and on a liquid product comprised of a container holding a liquid while the liquid product remains outside the hand carried baggage with a same X-ray imaging device, the X-ray inspection generating X-ray image data of the hand carried baggage and X-ray image data of the liquid product;

    b) processing the X-ray image data of the hand carried baggage to render an image of the hand carried baggage on a display to assist an operator in determining if the baggage contains illegal objects;

    c) processing with a computer the X-ray image data of the liquid product, the computer being programmed with software to;

    i) derive path length information based at least in part on the X-ray image data of the liquid product, the path length information being an approximation of a distance travelled by an X-ray through the liquid of the liquid product;

    ii) use the derived path length information to determine if the liquid held in the container is a security threat.

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