HyperSpectral classification with adaptively weighted L1-norm regularization and spatial postprocessing

Autor:	Aldea, Victor Stefan
Rok vydání:	2014
Předmět:	Mathematics - Optimization and Control Computer Science - Computer Vision and Pattern Recognition
Druh dokumentu:	Working Paper
Popis:	Sparse regression methods have been proven effective in a wide range of signal processing problems such as image compression, speech coding, channel equalization, linear regression and classification. In this paper a new convex method of hyperspectral image classification is developed based on the sparse unmixing algorithm SUnSAL for which a pixel adaptive L1-norm regularization term is introduced. To further enhance class separability, the algorithm is kernelized using an RBF kernel and the final results are improved by a combination of spatial pre and post-processing operations. It is shown that the proposed method is competitive with state of the art algorithms such as SVM-CK, KSOMP-CK and KSSP-CK. Comment: v3: 11 pages, 2 Figures, 10 Tables. Updated the results for the Indian Pines image; added the results for the Pavia University image
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1412.2684 Zobrazit plný text záznamu View this record from Arxiv