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Proceedings Paper

Optical cues for buried landmine detection
Author(s): Charles A. Hibbitts; James Staszewski; Andrew Cempa; Vincent Sha; Stephen Abraham
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Paper Abstract

Objects buried in unimproved surfaces can be inferred from the disturbance of the soil above them. We have found for mines emplaced according to U.S. military doctrine in clay-rich soils, that imaging at visible, shortwave infrared, and thermal infrared are effective at different times under various illumination conditions, and that these techniques can be synergistic. Complementary visible - thermal infrared laboratory spectral measurements show that grain size differences associated with disturbed soils can make them more reflective or emissive than undisturbed soils. However, the field measurements demonstrate that grain size effects are not significant under passive visible and shortwave infrared illumination. Instead, shortwave infrared (1.55 - 1.7 μm) imaging, in particular, is effective because the roughened disturbed soil casts a pattern of shadows under a wide range of illumination conditions that are also emphasized by a background of undisturbed soil possessing few contrast variations.

Paper Details

Date Published: 4 May 2009
PDF: 10 pages
Proc. SPIE 7303, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIV, 73031Q (4 May 2009); doi: 10.1117/12.818753
Show Author Affiliations
Charles A. Hibbitts, The Johns Hopkins Univ. (United States)
James Staszewski, Carnegie Mellon Univ. (United States)
Andrew Cempa, Lincoln Univ. (United States)
Vincent Sha, C&V Associates (United States)
Stephen Abraham, The Johns Hopkins Univ. (United States)

Published in SPIE Proceedings Vol. 7303:
Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIV
Russell S. Harmon; J. Thomas Broach; John H. Holloway Jr., Editor(s)

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