Nonlinear spectral unmixing for hyperspectral imagery based on bilinear mixture models
Received:October 21, 2016  Revised:December 04, 2016  download
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Author NameAffiliationE-mail
YANG Bin Key Laboratory for Information Science of Electromagnetic Waves MoE,Fudan University 15110720039@fudan.edu.cn 
WANG Bin Key Laboratory for Information Science of Electromagnetic Waves MoE,Fudan University wangbin@fudan.edu.cn 
WU Zong-Min School of Mathematical Sciences, Fudan University, Shanghai 200433, China  
Abstract:Nonlinear spectral unmixing for hyperspectral remote sensing images can overcome the shortage of linear unmixing methods that failing in explaining the nonlinear mixing effect in more complex scenarios. Meanwhile, bilinear mixture models and their corresponding algorithms are the hot topic of related researches. A nonlinear spectral unmixing algorithm based on the geometric characteristics of bilinear mixture models was proposed. By representing the models' nonlinear mixing terms as the linear contribution of one extra vertex concentrating the common nonlinear mixing effect, solving the complex bilinear mixture models was converted to do the simple linear spectral unmixing. Further, a traditional linear spectral unmixing algorithm was adopted to estimate the abundances directly in an iterative way.Experimental results on simulated and real hyperspectral images indicate that the proposed algorithm can overcome the collinearity effect and the adverse impact caused by fitting too many parameters, and improve both unmixing accuracy and computational speed.
keywords:Hyperspectral remote sensing  nonlinear spectral unmixing  bilinear mixture model  abundance estimation  simplex
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Copyright:《Journal of Infrared And Millimeter Waves》