Endmember Induction Algorithms

Download the latest Endmember Induction Algorithms (EIAs) toolbox here:

• MATLAB: download (xxx MB)
• SCILAB download (xxx MB)

This software is distributed under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

The here available Endmember Induction Algorithms (EIAs) toolbox have been developed with MATLAB 7.4 (licensed copy is needed to use it) and SCILAB 5.2 (open source and freely distributed).

If you are using the Endmember Induction Algorithms (EIAs) toolbox for your scientific research, please reference it as follows:

   Endmember Induction Algorithms (EIAs) toolbox.
   Grupo de Inteligencia Computacional, Universidad del País Vasco / Euskal Herriko Unibertsitatea (UPV/EHU), Spain. 
   http://www.ehu.es/computationalintelligence/index.php/Endmember_Induction_Algorithms

Copyright 2010 Grupo Inteligencia Computacional, Universidad del País Vasco / Euskal Herriko Unibertsitatea (UPV/EHU).

Acknowledgements to Prof. Antonio Plaza from the Department of Technology of Computers and Communications, University of Extremadura (Spain), and coordinator of the Hyper-I-Net project; and to Prof. Chein-I Chang from the Remote Sensing Signal and Image Processing Laboratory, University of Maryland (USA).

Endmember Induction Algorithms collection

Here you can find the EIAs included in the collection and their respective bibliographical references:

• Endmember Induction Heuristic Algorithm (EIHA)
  • MATLAB: download (4.7 KB)
  • SCILAB: download (xxx KB)

   M. Grana, I. Villaverde, J. O. Maldonado, and C. Hernandez
   Two lattice computing approaches for the unsupervised segmentation of hyperspectral images
   Neurocomput., vol. 72, nº. 10-12, págs. 2111-2120, 2009.

• Incremental Strong Lattice Independent Algorithm (ILSIA)
  • MATLAB: download (7.4 KB)
  • SCILAB: download (xxx KB)

   M. Grana, D. Chyzhyk, M. García-Sebastián, and C. Hernández
   Lattice independent component analysis for functional magnetic resonance imaging
   Information Sciences, vol. 181, pág. 1910–1928, May. 2011.

• Ritter's Strong Lattice Independent Algorithm (RLSIA)
  • MATLAB: download (2.4 KB)
  • SCILAB: download (2.3 KB)

   G. X. Ritter and G. Urcid
   A lattice matrix method for hyperspectral image unmixing
   Information Sciences, vol. In Press, Corrected Proof, Oct. 2010.

• N-FINDR
  • MATLAB: download (3.9 KB)
  • SCILAB: download (xxx KB)

   Chang, C.-I. and Plaza, A.
   A fast iterative algorithm for implementation of pixel purity index
   Geoscience and Remote Sensing Letters, IEEE, vol. 3, nº. 1, págs. 63-67, 2006.

• FIPPI
  • MATLAB: download (3.7 KB)
  • SCILAB: download (xxx KB)

   Winter, M. E.
   N-FINDR: an algorithm for fast autonomous spectral endmember determination in hyperspectral data
   presented at the Imaging Spectrometry V, Denver, CO, USA, 1999, vol. 3753, págs. 266-275.

• Automatic Target Generation Process (ATGP)
  • MATLAB: download (3.8 KB)
  • SCILAB: download (xxx KB)

   A. Plaza and C.-I. Chang
   Impact of Initialization on Design of Endmember Extraction Algorithms
   Geoscience and Remote Sensing, IEEE Transactions on, vol. 44, nº. 11, págs. 3397-3407, 2006.

• Convex Cone Analysis (CCA)
  • MATLAB: download (3.5 KB)
  • SCILAB: download (xxx KB)

   Ifarraguerri, A. and C.-I. Chang
   Multispectral and hyperspectral image analysis with convex cones
   Geoscience and Remote Sensing, IEEE Transactions on, vol. 37, nº. 2, págs. 756-770, 1999.

• Vertex Component Analysis (VCA)
  • MATLAB: download (xxx MB)
  • SCILAB: download (xxx MB)

   Nascimento, J. M. P. and Dias, J. M. B.
   Vertex component analysis: a fast algorithm to unmix hyperspectral data
   Geoscience and Remote Sensing, IEEE Transactions on, vol. 43, nº. 4, págs. 898-910, 2005.

Some of the algorithms require additional methods:

• Lattice Associative Memories (LAMs)
  • MATLAB: download (3.1 KB)
  • SCILAB: download (3.0 KB)

• Chebyshev distance
  • MATLAB: download (2.0 KB)
  • SCILAB: download (2.0 KB)

Some of the algorithms require as input the number of endmembers to search. If unknown, virtual dimensionality algorithms can be used:

• HFC method
  • MATLAB: download (3.2 KB)
  • SCILAB: download (xxx KB)

   Chang, C.-I. and Du, Q.
   Estimation of number of spectrally distinct signal sources in hyperspectral imagery
   Geoscience and Remote Sensing, IEEE Transactions on, vol. 42, nº. 3, págs. 608-619, 2004.