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Proceedings Paper

Band selection for viewing underwater objects using hyperspectral sensors
Author(s): David W. J. Stein; Stephen E. Stewart; Gary D. Gilbert; Jon S. Schoonmaker
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Paper Abstract

Multispectral and hyperspectral sensors are being used for remote sensing and imaging of ocean waters. Many applications require the compression of hyperspectral data to achieve real-time transmission or exploitation. Hyperspectral data compression or reduction has been accomplished using techniques based upon principal component analysis or linear unmixing. Alternatively, data compression (reduction) may be performed by band selection, or band selection may be preliminary to either of the other compression techniques. Band selection also has implications for sensor design and the stability of estimates of processing parameters. In this study, we address the question of which bands are the most efficacious for imaging submerged objects, such as whales, using an anomaly detector, or a matched filter. Bands are selected by optimizing a detection criterion subject to a constraint on the number of bands. The technique is applied to give hyperspectral data sets, and the optimum bandwidths and centers are determined. The loss in performance from selecting reduced numbers of bands is tabulated and the need for adaptively selecting reduced numbers of bands is demonstrated.

Paper Details

Date Published: 28 October 1999
PDF: 12 pages
Proc. SPIE 3761, Airborne and In-Water Underwater Imaging, (28 October 1999); doi: 10.1117/12.366487
Show Author Affiliations
David W. J. Stein, Space and Naval Warfare Systems Ctr., San Diego (United States)
Stephen E. Stewart, Space and Naval Warfare Systems Ctr., San Diego (United States)
Gary D. Gilbert, Space and Naval Warfare Systems Ctr., San Diego (United States)
Jon S. Schoonmaker, Space and Naval Warfare Systems Ctr., San Diego (United States)

Published in SPIE Proceedings Vol. 3761:
Airborne and In-Water Underwater Imaging
Gary D. Gilbert, Editor(s)

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