HYPERSPECTRAL IMAGE BAND SELECTION BASED ON SUBSPACE CLUSTERING
Keywords:Hyperspectral Image, High Dimensionality, Subspace Clustering, Feature Selection, Sparse Optimization, Support Vector Machine
Aiming at the problems in hyperspectral image classification, such as high dimension, small sample and large computation time, this paper proposes a band selection method based on subspace clustering, and applies it to hyperspectral image land cover classification. This method considers each band image as a feature vector, clustering band images using subspace clustering method. After that, a representative band is selected from each cluster. Finally feature vector is formed on behalf of the representative bands, which completes the dimension reduction of hyperspectral data. SVM classifier is used to classify the new generated sample points. Experimental data show that compared with other methods, the new method effectively improves the accuracy of land cover recognition.
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