Data Reduction and Rapid Analysis of Hyperspectral Data Sets, Phase I

Hyperspectral sensors offer great opportunities for increasingly sensitive automated target recognition (ATR) systems though a common problem is the lack of sufficient training data. Also, the inherent high dimensionality of hyperspectral signatures requires the design of a hyperspectral ATR to have a large number of training samples. This is due to the fact that the number of training samples required is directly related to the dimensionality of the classifier. In order to avoid this problem, the hyperspectral datasets must be preprocessed, thereby reducing the dimensionality to an acceptable level. Other challenges include uncertainty associated with measurements and missing/sparse data sets. To meet these challenges, the PERL Research and Mississippi State University will develop a unique ATR system for data reduction and rapid analysis of hyperspectral data. Our proposed approach is based on the integration of two concepts: localized discriminant bases and support vector machines. Our proposed ATR system will be able to rapidly cope with limited/sparse training data while producing optimal target recognition accuracies. Furthermore, the ATR will provide a unique capability for easy integration with various sensors and other ATR systems.

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