U.S. patents available from 1976 to present.
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Apparatus and method for automatic recognition of concealed objects using multiple energy computed tomography

Patent 6018562 Issued on January 25, 2000. Estimated Expiration Date: Icon_subject May 22, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

X-ray apparatus for computed tomography scanner
Patent #: 4274005
Issued on: 06/16/1981
Inventor: Yamamura ,   et al.

Energy separated quantum-counting radiography
Patent #: 4651005
Issued on: 03/17/1987
Inventor: Baba ,   et al.

Device for detecting nitrogenous, phosphoric, chloric and oxygenous substances
Patent #: 5175756
Issued on: 12/29/1992
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Material identification using x-rays Patent #: 5524133
Issued on: 06/04/1996
Inventor: Neale, et al.

Inventor

Assignee

Application

No. 087694 filed on 05/22/1998

US Classes:

378/9, Plural sources378/57Inspection of closed container

Examiners

Primary: Porta, David P.

Attorney, Agent or Firm

International Class

G01N 023/16

Abstract

An apparatus and method for automatic recognition and identification of concealed objects and features thereof, such as contraband in baggage or defects in articles of manufacture, is disclosed. The apparatus uses multiple energy X-ray scanning to identify targets with a spectral response corresponding to a known response of targets of interest. Detection sensitivity for both automatic detection and manual inspection are improved through the multiple-energy, multispectral technique. Multichannel processing is used to achieve high throughput capability. Target identification may be verified through further analysis of such attributes as shape, texture, and context of the scan data. The apparatus uses a statistical analysis to predict the confidence level of a particular target identification. A radiograph, CT image, or both may be reconstructed and displayed on a computer monitor for visual analysis by an operator. Finally, the apparatus may receive and store input from the operator for use in subsequent target identification.

Other References

  • R.M. Wallingford, et al., "Application of Two-Dimensional Matched Filters X-Ray Radiographic Flaw Detection and Enhancement", Revs of Prog. in QNDE, vol. 11, 1992, pp. 879-886
  • M.S. Chackalackal et al., "NDE X-Ray Image Analysis Using Mathematical Morphology", Rev. of Prog. in QNDE, vol. 9, 1990, pp. 721-728
  • M.S. Chackalackal et al., "NDE X-Ray Image Analysis Using Mathematical Morphology", Rev. of Prog. in QNDE, vol. 9, 1990, pp. 887-894
  • "Standard Guide for Computed Tomography (CT) Imaging," ASTM, Designation E 1441-93, Apr. 1993
  • Andersen, Anders H., "Algebraic Reconstruction in CT from Limited Views", IEEE Transactions on medical Imaging, vol. 8, No. 1, pp. 50-55, Mar. 1989
  • N.J. Dusaussoy et al., "The Extended MENT Algorithm: A Promising Reconstruction Algorithm for Computerized Tomography," IEEE, 1989, pp. 1460-146
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