Regularization for designing spectral matched filter target detectors

Nasser M. Nasrabadi

doi:10.1117/12.735618

24 September 2007 Regularization for designing spectral matched filter target detectors

Nasser M. Nasrabadi

Proceedings Volume 6696, Applications of Digital Image Processing XXX; 66961A (2007) https://doi.org/10.1117/12.735618
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

This paper describes a new adaptive spectral matched filter that incorporates the idea of regularization (shrinkage) to penalize and shrink the filter coefficients to a range of values. 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 regularization 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 targets in hyperspectral imagery are presented for regularized and non-regularized spectral matched filters.

Citation Download Citation

Nasser M. Nasrabadi "Regularization for designing spectral matched filter target detectors", Proc. SPIE 6696, Applications of Digital Image Processing XXX, 66961A (24 September 2007); https://doi.org/10.1117/12.735618

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