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Title: Unsupervised spectral mixture analysis with hopfield neural network for hyperspectral images
Authors: Mei, S
He, M
Wang, X
Feng, D
Issue Date: 2012
Source: 2012 19th IEEE International Conference on Image Processing (ICIP), September 30 2012-October 3 2012, Orlando, FL, p. 2665-2668
Abstract: Spectral Mixture Analysis (SMA) has been widely utilized to address the mixed-pixel problem in the quantitative analysis of hyperspectral remote sensing images. Recently Nonnegative Matrix Factorization (NMF) has been successfully utilized to simultaneously perform endmember extraction (EE) and abundance estimation (AE). In this paper, we formulate the solution of NMF by performing EE and AE iteratively. Based on our previous Hopfield Neural Network (HNN) based AE algorithm, an HNN is also constructed for EE to solve the multiplicative updating problem of NMF for SMA. As a result, SMA is conducted in an unsupervised manner and our algorithm is able to extract virtual endmembers without assuming the presence of spectrally pure constituents in hyperspectral scenes. We further extend such strategy to solve the constrained NMF (cNMF) models for SMA, where extra constraints are imposed to better model the mixed-pixel problem. Experimental results on both synthetic and real hyperspectral images demonstrate the effectiveness of our proposed HNN based unsupervised SMA algorithms.
Keywords: Hopfield Neural Network
Hyperspectral images
Nonnegative Matrix Factorization
Spectral Mixture Analysis
Publisher: IEEE
ISBN: 978-1-4673-2534-9
978-1-4673-2532-5 (E-ISBN)
ISSN: 1522-4880
DOI: 10.1109/ICIP.2012.6467447
Appears in Collections:Conference Paper

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