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PSO-Based Optimal Selection of Zernike Moments for Target Discrimination in High-Resolution SAR Imagery

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Abstract

Target discrimination is the key step of automatic target detection in synthetic aperture radar (SAR) images. In this paper, a new algorithm, effective and robust feature sets for target discrimination in high resolution SAR images has been proposed. Two main steps in target discrimination of SAR images have been developed, the feature extraction based on Zernike moments (ZMs) having linear transformation invariance properties and the PSO based feature selection to select the optimal feature subset of Zernike moments for decreasing computational complexity of feature extraction step. The input regions of interest (ROIs) have been segmented and passed to a number of preprocessing stages such as histogram equalization, position and size normalization. Two groups of Zernike moments (shape and margin (intensity) characteristic) have been extracted from the preprocessed images and they have been applied to the feature selection step. Each group includes 34 moments with different orders and iterations. The selected moments have been applied to a SVM classifier. The proposed scheme has been tested on the MSTAR database. The Receiver Operational Characteristics (ROC) curve and the performance of proposed method using some measured data have been analyzed. Experimental results demonstrate the efficiency of the proposed approach in target discrimination of SAR imagery.

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Authors and Affiliations

  1. Department of Electrical Engineering, Iran University of Science and Technology, Narmak, Tehran, Iran, 1684613114

    Mehdi Amoon, Gholam-ali Rezai-rad & Mohammad Reza Daliri

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  1. Mehdi Amoon
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  2. Gholam-ali Rezai-rad
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  3. Mohammad Reza Daliri
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Correspondence to Mehdi Amoon.

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Amoon, M., Rezai-rad, Ga. & Daliri, M.R. PSO-Based Optimal Selection of Zernike Moments for Target Discrimination in High-Resolution SAR Imagery. J Indian Soc Remote Sens 42, 483–493 (2014). https://doi.org/10.1007/s12524-013-0344-6

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  • DOI: https://doi.org/10.1007/s12524-013-0344-6

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