Award Date

1-1-2001

Degree Type

Thesis

Degree Name

Master of Science (MS)

Department

Electrical Engineering

First Committee Member

Eugene McGaugh

Number of Pages

90

Abstract

The goal of this research was to detect anomalies in remotely sensed Hyperspectral images using automated derivative based methods. A database of Hyperspectral signatures was used that had simulated additive Gaussian anomalies that modeled a weakly concentrated aerosol in several spectral bands. The automated pattern detection system was carried out in four steps. They were: (1) feature extraction, (2) feature reduction through linear discriminant analysis, (3) performance characterization through receiver operating characteristic curves, and (4) signature classification using nearest mean and maximum likelihood classifiers. The Hyperspectral database contained signatures with various anomaly concentrations ranging from weakly present to moderately present and also anomalies in various spectral reflective and absorptive bands. It was found that the automated derivative based detection system gave classification accuracies of 97 percent for a Gaussian anomaly of SNR -45 dB and 70 percent for Gaussian anomaly of SNR -85 dB. This demonstrates the applicability of using derivative analysis methods for pattern detection and classification with remotely sensed Hyperspectral images.

Keywords

Anomaly; Automated; Derivative; Detection; Hyperspectral; Methods; Signatures; Spectroscopy

Controlled Subject

Electrical engineering; Remote sensing

File Format

pdf

File Size

2590.72 KB

Degree Grantor

University of Nevada, Las Vegas

Language

English

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