EAS Publications Series
Volume 59, 2013New Concepts in Imaging: Optical and Statistical Models
|Page(s)||417 - 437|
|Section||Statistical Models in Signal and Image Processing|
|Published online||13 March 2013|
D. Mary, C. Theys and C. Aime (eds)
EAS Publications Series, 59 (2013) 417-437
Supervised Nonlinear Unmixing of Hyperspectral Images Using a Pre-image Methods
Université de Nice Sophia-Antipolis, CNRS, Observatoire de la Côte
2 Université de Technologie de Troyes, CNRS, France
Spectral unmixing is an important issue to analyze remotely sensed hyperspectral data. This involves the decomposition of each mixed pixel into its pure endmember spectra, and the estimation of the abundance value for each endmember. Although linear mixture models are often considered because of their simplicity, there are many situations in which they can be advantageously replaced by nonlinear mixture models. In this chapter, we derive a supervised kernel-based unmixing method that relies on a pre-image problem-solving technique. The kernel selection problem is also briefly considered. We show that partially-linear kernels can serve as an appropriate solution, and the nonlinear part of the kernel can be advantageously designed with manifold-learning-based techniques. Finally, we incorporate spatial information into our method in order to improve unmixing performance.
© EAS, EDP Sciences 2013
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