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US 7,405,692 B2Granted
Detecting concealed objects at a checkpoint
AssigneeBattelle Memorial Institute
InventorsDouglas L. McMakin, Thomas E. Hall, David M. Sheen, Ronald H. Severtsen
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Abstract
Disclosed are systems, methods, devices, and apparatus to interrogate a clothed individual with electromagnetic radiation to determine if a concealed object is being carried. This determination includes establishing data corresponding to an image of the individual with a pair of opposed, semi-cylindrical array panels each configured to interrogate the individual with electromagnetic radiation in the 200 MHz to 1 THz range.
Claims34
A system, comprising:
- two or more arrays spaced apart from each other to define an interrogation region therebetween, the arrays each being structured to turn about the interrogation region to interrogate a person in the interrogation region with electromagnetic radiation at one or more frequencies in a range of about 200 MHz to about 1 THz to provide corresponding interrogation signals;
- one or more processors operable to establish data corresponding to a topographical representation of the person determined from the interrogation signals and generate an output as a function of the data, the data corresponding to the topographical representation defining a volume of the person in the interrogation region;
- and
- a device responsive to the output to provide an indication to an operator if the person is suspected of carrying one or more concealed objects that pose a threat to security,
- wherein the one or more processors are operable to generate the data corresponding to the topographical representation of the person by combining image data sets of three-dimensional data.
2 more elements
A method, comprising:
- providing two or more arrays each shaped to turn about a person positioned between the arrays;
- operating the arrays to perform an interrogation of the person with electromagnetic radiation at one or more frequencies in a range of about 200 MHz to about 1 THz;
- generating a plurality of image data sets from the interrogation, each of the image data sets comprising three-dimensional data;
- and
- generating volumetric data by combining the plurality of image data sets, the volumetric data being indicative of the surface of the person.
2 more elements
A method, comprising:
- generating electromagnetic radiation at one or more frequencies in a range of about 200 MHz to about 1 THz with two or more arrays to perform an interrogation of a person positioned between the two or more arrays;
- moving at least one of the arrays along a path about the person during the interrogation;
- and
- generating volumetric data from the interrogation to detect if the person is concealing an object, the act of generating the volumetric data including combining a plurality of cylindrical image data sets, each of the cylindrical image data sets comprising data that is representative of a three-dimensional surface of a portion of the person.
1 more element
Dependencies are inferred from the claim text.