Signal subspace identification in hyperspectral linear mixtures

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Abstract

Hyperspectral applications in remote sensing are often focused on determining the so-called spectral signatures, i.e., the reflectances of materials present in the scene (endmembers) and the corresponding abundance fractions at each pixel in a spatial area of interest. The determination of the number of endmembers in a scene without any prior knowledge is crucial to the success of hyperspectral image analysis. This paper proposes a new mean squared error approach to determine the signal subspace in hyperspectral imagery. The method first estimates the signal and noise correlations matrices, then it selects the subset of eigenvalues that best represents the signal subspace in the least square sense. © Springer-Verlag Berlin Heidelberg 2005.

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Nascimento, J. M. P., & Dias, J. M. B. (2005). Signal subspace identification in hyperspectral linear mixtures. In Lecture Notes in Computer Science (Vol. 3523, pp. 207–214). Springer Verlag. https://doi.org/10.1007/11492542_26

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