Sparse Coding for Spectral Signatures in Hyperspectral Images (bibtex)

by A. Charles and C.J. Rozell

Abstract:

The growing use of hyperspectral imagery lead us to seek automated algorithms for extracting useful information about the scene. Recent work in sparse approximation has shown that unsupervised learning techniques can use example data to determine an efficient dictionary with few a priori assumptions. We apply this model to sample hyperspectral data and show that these techniques learn a dictionary that: 1) contains a meaningful spectral decomposition for hyperspectral imagery, 2) admit representations that are useful in determining properties and classifying materials in the scene, and 3) forms local approximations to the nonlinear manifold structure present in the actual data.

Reference:

Sparse Coding for Spectral Signatures in Hyperspectral ImagesA. Charles and C.J. Rozell. November 2010.

Bibtex Entry:

@CONFERENCE{charles.10,
  author = 	 {Charles, A. and Rozell, C.J.},
  title = 	 {Sparse Coding for Spectral Signatures in Hyperspectral Images},
  booktitle =	 {{Proceedings of the Asilomar Conference on Signals, Systems, and Computers}},
  year =	 2010,
  month = {November},
  address =	 {Pacific Grove, CA},
abstract = {The growing use of hyperspectral imagery lead us to seek automated algorithms for extracting useful information about the scene.  Recent work in sparse approximation has shown that unsupervised learning techniques can use example data to determine an efficient dictionary with few a priori assumptions.  We apply this model to sample hyperspectral data and show that these techniques learn a dictionary that: 1) contains a meaningful spectral decomposition for hyperspectral imagery, 2) admit representations that are useful in determining properties and classifying materials in the scene, and 3)  forms local approximations to the nonlinear manifold structure present in the actual data.}
}