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Authors: Martínez, P. J.* 
Pérez, R. M.* 
Plaza, A.* 
Aguilar, P. L.* 
Cantero, M. C.* 
Plaza, J.* 
Title: Endmember extraction algorithms from hyperspectral images
Issue Date: Feb-2006
Series/Report no.: 1/49 (2006)
Keywords: endmember extraction
hyperspectral mixtures
linear spectral unmixing
Subject Classification05. General::05.05. Mathematical geophysics::05.05.99. General or miscellaneous 
Abstract: During the last years, several high-resolution sensors have been developed for hyperspectral remote sensing applications. Some of these sensors are already available on space-borne devices. Space-borne sensors are currently acquiring a continual stream of hyperspectral data, and new efficient unsupervised algorithms are required to analyze the great amount of data produced by these instruments. The identification of image endmembers is a crucial task in hyperspectral data exploitation. Once the individual endmembers have been identified, several methods can be used to map their spatial distribution, associations and abundances. This paper reviews the Pixel Purity Index (PPI), N-FINDR and Automatic Morphological Endmember Extraction (AMEE) algorithms developed to accomplish the task of finding appropriate image endmembers by applying them to real hyperspectral data. In order to compare the performance of these methods a metric based on the Root Mean Square Error (RMSE) between the estimated and reference abundance maps is used.
Appears in Collections:Annals of Geophysics

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