This paper describes a new adaptive spectral matched filter and a modified rx-based anomaly detector that incorporates the idea of regularization (shrinkage). The regularization has the effect of restricting the possi...
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ISBN:
(纸本)9780819471574
This paper describes a new adaptive spectral matched filter and a modified rx-based anomaly detector that incorporates the idea of regularization (shrinkage). The regularization has the effect of restricting the possible matched filters (models) to a subset which are more stable and have better performance than the non-regularized adaptive spectral matched filters. The effect of regularization depends on the form of the regularization term and the amount of regularization is controlled by so called regulanization coefficient. In this paper the sum-of-squares of the filter coefficients is used as the regularization term and several different values for the regularization coefficient are tested. A Bayesian-based derivation of the regularized matched filter is also provided. Experimental results for detecting and recognizing targets in hyperspectral imagery are presented for regularized and non-regularized spectral matched filters and rxalgorithm.
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