×

Multiview x-ray based system for detecting contraband such as in baggage

  • US 6,088,423 A
  • Filed: 06/05/1998
  • Issued: 07/11/2000
  • Est. Priority Date: 06/05/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A multi view x-ray baggage inspection method for detecting contraband in baggage comprising:

  • moving baggage through at least three differently oriented x-ray beams which are spaced from each other in the direction of baggage movement through a tunnel having sides, said beams emanating from respective x-ray sources, each pair of sources being spaced from each other by at least a major portion of a side of the tunnel;

    deriving dual energy digital x-ray data related to interactions between the baggage and the three x-ray beams;

    processing the x-ray data with a computer to identify likely individual objects in the baggage and to produce digital estimates related to effective atomic number and digital estimates related to mass density of the likely objects; and

    finding the likely presence of contraband in the baggage by testing the estimates relative to multi-dimensional space in which one dimension relates to density and another to effective atomic number.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×