PolSAR Ship Detection Based on Superpixel-Level Scattering Mechanism Distribution Features

被引：52
|
作者：
Wang, Yinghua [1 ]
Liu, Hongwei [1 ]
机构：
[1] Xidian Univ, Natl Lab Radar Signal Proc, Xian 710071, Peoples R China
来源：
IEEE GEOSCIENCE AND REMOTE SENSING LETTERS | 2015年 / 12卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Polarimetric synthetic aperture radar (PolSAR); scattering mechanism (SM); ship detection; signal-to-clutter ratio (SCR); superpixel; DECOMPOSITION; SEGMENTATION;
D O I：
10.1109/LGRS.2015.2425873
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
To improve the target detection performance under a low signal-to-clutter ratio, this letter presents a new polarimetric synthetic aperture radar (PolSAR) ship detector based on superpixel-level scattering mechanism (SM) distribution features. The proposed method is based on the observation that the SMs of targets and clutter have different distributions in the classical H/alpha plane. To make use of this difference in ship detection, multiscale superpixels are first generated for PolSAR images. Then, two features describing the SM distribution in the superpixel are proposed. Based on these features, a test statistic independent of the scattering intensity is finally defined. The performance improvement of the proposed method is verified using a synthetic data set and real PolSAR images obtained from a RADARSAT-2 data set.
引用
收藏
页码：1780 / 1784
页数：5
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