Neural network combination by fuzzy integral for robust change detection in remotely sensed imagery

Authors:
Hassiba Nemmour;Youcef Chibani
Affiliations:
Signal Processing Laboratory, Faculty of Electronic and Computer Sciences, University of Sciences and Technology, Algiers, Algeria;Signal Processing Laboratory, Faculty of Electronic and Computer Sciences, University of Sciences and Technology, Algiers, Algeria
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2005

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Abstract

Combining multiple neural networks has been used to improve the decision accuracy in many application fields including pattern recognition and classification. In this paper, we investigate the potential of this approach for land cover change detection. In a first step, we perform many experiments in order to find the optimal individual networks in terms of architecture and training rule. In the second step, different neural network change detectors are combined using amethod based on the notion of fuzzy integral. This method combines objective evidences in the form of network outputs, with subjective measures of their performances. Various forms of the fuzzy integral, which are, namely, Choquet integral, Sugeno integral, and two extensions of Sugeno integral with ordered weighted averaging operators, are implemented. Experimental analysis using error matrices and Kappa analysis showed that the fuzzy integral outperforms individual networks and constitutes an appropriate strategy to increase the accuracy of change detection.