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Proceedings Paper

Spectral and spatial analysis of false alarms in background data
Author(s): Abhishek Sanaka; Shivakar Vulli; Sanjeev Agarwal; Richard Ess; Anh Trang
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Paper Abstract

A significant amount of background data was collected as part of May 2005 tests at an arid site for airborne minefield detection. An extensive library of the target chips for MSI (four bands) and MWIR sensors for false alarms and mines was created from this data collection, as discussed in another paper in the same proceeding. In this paper we present some results from the analysis of this background data to determine spectral and shape characteristics of different types of false alarms. Particularly, a set of spectral features is identified that can be used for effective false alarm rejection for the benefit of airborne minefield detection programs. A reasonable separation between vegetation and non-vegetation (like rocks) is shown for Normalized Difference Vegetation Index (NDVI) type metrics. Also, a reasonable separation is shown between different types of false alarms at a given time using Color Contrast feature. The spatial distribution of different types of false alarms, as seen in available airborne background data, is also evaluated and discussed. Such spatial analysis is of interest from the perspective of minefield level detection and analysis. The paper is concluded with a discussion on future directions for this effort.

Paper Details

Date Published: 5 May 2009
PDF: 12 pages
Proc. SPIE 7303, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XIV, 730316 (5 May 2009); doi: 10.1117/12.819501
Show Author Affiliations
Abhishek Sanaka, Missouri Univ. of Science and Technology (United States)
Shivakar Vulli, Missouri Univ. of Science and Technology (United States)
Sanjeev Agarwal, Missouri Univ. of Science and Technology (United States)
Richard Ess, U.S. Army (United States)
Anh Trang, U.S. Army Night Vision & Electronic Sensors Directorate (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, Editor(s)

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