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- W2108816579 abstract "In this paper, we consider the problem of blind image separation by taking advantage of the sparse representation of the hyperspectral images in the DCT-domain. Blind Source Separation (BSS) is an important field of research in signal and image processing. These images are produced by sensors which provide hundreds of narrow and adjacent spectral bands. The idea behind transform domain is that we can restructure the signal/image values to give transform coefficients more easily to separate. This work describes a novel approach based on Second-Order Separation by Frequency-Decomposition, termed SOSFD. This technique uses joint information from second-order statistics and sparseness decomposition. Furthermore, the proposed approach has the added advantages of the DCT and second-order statistics in order to select the optimum data information. In fact, representing the hyperspectral images in well suited database functions allows a good distinction of various types of objects. Results show the contribution of this new approach for the hyperspectral image analysis and prove the performance of the SOSFD algorithm for hyperspectral image classification. On the opposite of the original images that are represented according to correlated axes, the source images extracted from the proposed approach are represented according to mutually independent axes that allow a more efficient representation of information contained in each image. Then, each source can represent specifically certain themes by exploiting the link between the frequency-distribution and structural composition of the image. This application is of utmost importance in the classification process and could increase the reliability of the analysis and the interpretation of the hyperspectral images." @default.
- W2108816579 created "2016-06-24" @default.
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- W2108816579 date "2012-12-01" @default.
- W2108816579 modified "2023-10-18" @default.
- W2108816579 title "Second-Order Separation by Frequency-Decomposition of Hyperspectral Data" @default.
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- W2108816579 doi "https://doi.org/10.5923/j.ajsp.20120205.05" @default.
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