A new non-negative matrix factorization method based on barycentric coordinates for endmember extraction in hyperspectral remote sensing

Abstract

In this study, we present a new non-negative matrix factorization (NMF) method using the pixel's barycentric coordinates for endmember extraction, named BC-NMF. Our method applies the geometrical property of simplex in the calculation of abundance fraction. That is, for any pixel in an image, its abundance fractions are its barycentric coordinates within the endmember coordinate system. Experiments using both simulated and real hyperspectral images show that BC-NMF can generate endmembers with higher accuracy and lower computational complexity than NMF.

Acknowledgements

This work was supported by the National High Technology Research and Development Programme (863 Programme) of China (No. 2009AA122101, 2009AA12ZX1486531) and the Joint Fund of the National Natural Science Foundation of China and Civil Aviation Administration of China (Grant No. 61079018).