Remote Sensing Applications and Decision Support

Automatic target recognition scheme for a high-resolution and large-scale synthetic aperture radar image

[+] Author Affiliations
Song Tu, Yi Su, Boli Xiong, Yu Li

National University of Defense Technology, School of Electronic Science and Engineering, Yanwachi Street No. 137, Changsha 410073, China

Wei Wang

National University of Defense Technology, School of Optoelectronic Science and Engineering, Yanwachi Street No. 137, Changsha 410073, China

J. Appl. Remote Sens. 9(1), 096039 (Jun 11, 2015). doi:10.1117/1.JRS.9.096039
History: Received December 9, 2014; Accepted May 14, 2015
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Abstract.  Existing automatic target recognition of synthetic aperture radar (SAR ATR) schemes mainly focus on target chips, but there is very little research for a large-scale and high-resolution SAR image that is more practical for SAR image interpretation. How to recognize targets efficiently and accurately from a large-scale and high-resolution SAR image is still a challenge. We present a scheme based on the combination of a salient detection approach, an active contour model (ACM), an affine-invariant shape descriptor, and the corresponding shape context. During the detection stage, the spectral residual approach is utilized to efficiently preselect salient regions. The proposed convex ACM, based on a ratio distance and distribution metric which makes it more robust to multiplicative speckled noise, is then adopted to get accurate candidate target chips. For the discrimination stage, a cumulative sum of multiscale lacunarity feature is proposed to select vehicle chips from clutter chips. Finally, affine-invariant shape features, obtained from the contours by our proposed ACM, are combined with a corresponding shape context to make the classification more accurate. Experimental results demonstrate that our SAR ATR system, integrating all the proposed methods, is feasible in ATR from a high-resolution and large-scale SAR image.

© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Song Tu ; Yi Su ; Wei Wang ; Boli Xiong and Yu Li
"Automatic target recognition scheme for a high-resolution and large-scale synthetic aperture radar image", J. Appl. Remote Sens. 9(1), 096039 (Jun 11, 2015). ; http://dx.doi.org/10.1117/1.JRS.9.096039


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