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Sensors 2009, 9(9), 7516-7539; doi:10.3390/s90907516
Article

Remote-Sensing Image Classification Based on an Improved Probabilistic Neural Network

1,* , 1, 2
,
1
 and
1
1 School of Information Science and Engineering, Southeast University, Nanjing 210009, China 2 Signal-Image-Parole Laboratory, Department of Computer Science, University of Science and Technology – Oran, Oran, Algeria
* Author to whom correspondence should be addressed.
Received: 12 June 2009 / Revised: 2 September 2009 / Accepted: 16 September 2009 / Published: 23 September 2009
(This article belongs to the Special Issue Neural Networks and Sensors)

Abstract

This paper proposes a hybrid classifier for polarimetric SAR images. The feature sets consist of span image, the H/A/α decomposition, and the GLCM-based texture features. Then, a probabilistic neural network (PNN) was adopted for classification, and a novel algorithm proposed to enhance its performance. Principle component analysis (PCA) was chosen to reduce feature dimensions, random division to reduce the number of neurons, and Brent’s search (BS) to find the optimal bias values. The results on San Francisco and Flevoland sites are compared to that using a 3-layer BPNN to demonstrate the validity of our algorithm in terms of confusion matrix and overall accuracy. In addition, the importance of each improvement of the algorithm was proven.
Keywords: polarimetric SAR; Probabilistic neural network; gray-level co-occurrence matrix; principle component analysis; Brent’s Search polarimetric SAR; Probabilistic neural network; gray-level co-occurrence matrix; principle component analysis; Brent’s Search
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Zhang, Y.; Wu, L.; Neggaz, N.; Wang, S.; Wei, G. Remote-Sensing Image Classification Based on an Improved Probabilistic Neural Network. Sensors 2009, 9, 7516-7539.

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