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Proceedings Paper

A methodology for estimating lateral range curves for electro-optical visible and infrared imaging systems for maritime search and detection applications
Author(s): Michael J. DeWeert; Carrie L. Leonard; Carrie L. Stalder; Judy Iokepa; Jonathan Gradie
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Paper Abstract

Electro-optical (EO) systems with digital image processing and computer-aided detection are increasingly coming into use for maritime surveillance, reconnaissance and search and rescue. EO systems have the potential to improve the consistency of detection, reduce operator workload and fatigue, and improve search efficiency. However, quantifying their performance versus more traditional approaches is problematic, because of the differences in how performance is specified for traditional systems versus modern computer-aided designs. In maritime search applications, system performance is commonly specified in terms of the lateral range curve (LRC). The LRC is a plot of the probability of detection versus horizontal range from the search platform. This metric has a long history, rooted in visual searches by trained human observers. However, it is specified without reference to any false-alarm rate or probability of false alarm. Computer-aided EO performance, on the other hand, is usually specified in terms of Signal-to-Noise Ratio (SNR), Receiver Operating Characteristic (ROC) curve, or some equivalent metric. In this paper, we demonstrate a methodology for estimating LRCs from SNRs or ROC curves. This methodology provides a consistent, quantifiable means for comparing the performance of new and legacy systems.

Paper Details

Date Published: 19 May 2005
PDF: 11 pages
Proc. SPIE 5780, Photonics for Port and Harbor Security, (19 May 2005); doi: 10.1117/12.604459
Show Author Affiliations
Michael J. DeWeert, BAE Systems Spectral Solutions, LLC (United States)
Carrie L. Leonard, BAE Systems Spectral Solutions, LLC (United States)
Carrie L. Stalder, BAE Systems Spectral Solutions, LLC (United States)
Judy Iokepa, BAE Systems Spectral Solutions, LLC (United States)
Jonathan Gradie, BAE Systems Spectral Solutions, LLC (United States)

Published in SPIE Proceedings Vol. 5780:
Photonics for Port and Harbor Security
Michael J. DeWeert; Theodore T. Saito, Editor(s)

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