Experimental measurement of noise-removal techniques for Compton backscatter imaging systems as applied to the detection of landmines

Joseph C. Wehlburg; Shyam P. Keshavmurthy; Edward T. Dugan; Alan M. Jacobs

doi:10.1117/12.241253

31 May 1996 Experimental measurement of noise-removal techniques for Compton backscatter imaging systems as applied to the detection of landmines

Joseph C. Wehlburg, Shyam P. Keshavmurthy, Edward T. Dugan, Alan M. Jacobs

Author Affiliations +

Proceedings Volume 2765, Detection and Remediation Technologies for Mines and Minelike Targets; (1996) https://doi.org/10.1117/12.241253
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

The measurement and removal of noise from images created using lateral migration backscatter radiography (LMBR) a form of Compton backscatter imaging (CBI) is applied to the detection and identification of landmines. The photons that interact with the landmine produce the signal component of interest. The signal is corrupted by both quantum and structured noise. The structured noise is due to photon interaction with non-mine material. Due to the strong response of all detectors to soil surface features and other buried objects, image enhancement methods are essential for landmine identification. A four detector system is used to generate the LMBR/CB images. The inner two detectors are uncollimated and positioned to optimally detect first scattered photons. The outer detectors are collimated to detect photons that have had two or more scatterings. The difference between the collimated and uncollimated detector responses to the different types of landmine image masking phenomena, form the basis of the image enhancement and landmine identification procedures. The surface feature information is obtained by the uncollimated detectors. The collimated detector signal contains information about the surface features as well as the buried objects. Using images from these two sets of detectors the surface objects can be analyzed for possible landmines and then removed. The buried objects can then be resolved. The measurements and image enhancements demonstrate that it is possible to detect 12' plastic landmines at a buried of 3' under simulated battlefield conditions.

Citation Download Citation

Joseph C. Wehlburg, Shyam P. Keshavmurthy, Edward T. Dugan, and Alan M. Jacobs "Experimental measurement of noise-removal techniques for Compton backscatter imaging systems as applied to the detection of landmines", Proc. SPIE 2765, Detection and Remediation Technologies for Mines and Minelike Targets, (31 May 1996); https://doi.org/10.1117/12.241253

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