TY - GEN
T1 - Unmixing hyperspectral data
AU - Parra, Lucas
AU - Spence, Clay
AU - Sajda, Paul
AU - Ziehe, Andreas
AU - Müller, Klaus Robert
PY - 2000
Y1 - 2000
N2 - In hyperspectral imagery one pixel typically consists of a mixture of the reflectance spectra of several materials' where the mixture coefficients correspond to the abundances of the constituting materials. We assume linear combinations of reflectance spectra with some additive normal sensor noise and derive a probabilistic MAP framework for analyzing hyperspectral data. As the material reflectance characteristics are not know a priori' we face the problem of unsupervised linear unmixing. The incorporation of different prior information (e.g. positivity and normalization of the abundances) naturally leads to a family of interesting algorithms' for case yielding an algorithm that can be understood as constrained independent component analysis (ICA). Simulations underline the usefulness of our theory.
AB - In hyperspectral imagery one pixel typically consists of a mixture of the reflectance spectra of several materials' where the mixture coefficients correspond to the abundances of the constituting materials. We assume linear combinations of reflectance spectra with some additive normal sensor noise and derive a probabilistic MAP framework for analyzing hyperspectral data. As the material reflectance characteristics are not know a priori' we face the problem of unsupervised linear unmixing. The incorporation of different prior information (e.g. positivity and normalization of the abundances) naturally leads to a family of interesting algorithms' for case yielding an algorithm that can be understood as constrained independent component analysis (ICA). Simulations underline the usefulness of our theory.
UR - http://www.scopus.com/inward/record.url?scp=84898930340&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84898930340&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84898930340
SN - 0262194503
SN - 9780262194501
T3 - Advances in Neural Information Processing Systems
SP - 942
EP - 948
BT - Advances in Neural Information Processing Systems 12 - Proceedings of the 1999 Conference, NIPS 1999
PB - Neural information processing systems foundation
T2 - 13th Annual Neural Information Processing Systems Conference, NIPS 1999
Y2 - 29 November 1999 through 4 December 1999
ER -