A DISCRIMINATION METHOD OF WATER AND SHADOW AREAS BASED ON POLARIZATION ENTROPY OF SENTINEL-1 DATA

被引:1
作者
Luo, Ying [1 ]
Yin, Qiang [1 ]
Ma, Fei [1 ]
机构
[1] Beijing Univ Chem Technol, Coll Informat Sci & Technol, Beijing 100029, Peoples R China
来源
2022 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS 2022) | 2022年
基金
中国国家自然科学基金;
关键词
Sentinel-1; Dual polarization; H / (alpha)over-bar Wishart; Entropy; Shadow;
D O I
10.1109/IGARSS46834.2022.9883638
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Rapid and accurate extraction of water body information is fundamental to disaster assessment. However, in SAR images, shadows often appear similar to the water regions, so the commonly threshold-based water detection methods easily confuse them. The purpose of this paper is to use Sentinel-1 polarimetric SAR data to find a simpler and more effective method to identify shadow areas out of water bodies. Considering a strong dependence on intensity of Wishart classifier, the weak backscattered regions on the SAR images will be categorized into the same class. We firstly use H / (alpha) over bar Wishart to roughly classify the PolSAR data to obtain a relatively complete experimental study area. Then, we further discriminate the shadow regions from the study area based on the difference of the entropy between the water body regions and the surrounding environment. The experimental results based on Sentinel-1 measured data prove the effectiveness of this method.
引用
收藏
页码:3171 / 3174
页数:4
相关论文
共 11 条
[1]  
[曹云刚 CAO Yungang], 2006, [地理与地理信息科学, Geography and geo-information science], V22, P13
[2]   On the imaging of exposed intertidal flats by single- and dual-co-polarization Synthetic Aperture Radar [J].
Gade, Martin ;
Wang, Wensheng ;
Kemme, Linnea .
REMOTE SENSING OF ENVIRONMENT, 2018, 205 :315-328
[3]   SENTINEL-1 SYSTEM CAPABILITIES AND APPLICATIONS [J].
Geudtner, Dirk ;
Torres, Ramon ;
Snoeij, Paul ;
Davidson, Malcolm ;
Rommen, Bjroen .
2014 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 2014, :1457-1460
[4]  
Horritt MS, 2001, INT J REMOTE SENS, V22, P2489, DOI 10.1080/01431160152497691
[5]  
[郎丰铠 Lang Fengkai], 2012, [测绘学报, Acta Geodetica et Cartographica Sinica], V41, P556
[6]  
Li C., 2018, GEOSPAT INF, V16, P38
[7]   THRESHOLD SELECTION METHOD FROM GRAY-LEVEL HISTOGRAMS [J].
OTSU, N .
IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS, 1979, 9 (01) :62-66
[8]   融合DEM去除山体阴影的水体提取方法 [J].
庞科臣 ;
陈立福 ;
王思雨 .
电子科技, 2016, (04) :76-78
[9]  
[杨存建 Yang Cunjian], 2002, [自然灾害学报, Journal of Natural Disasters], V11, P121
[10]   UNSUPERVISED CLASSIFICATION OF THE WEAK BACKSCATTERING SCATTERERS BY THE USE OF POLSAR IMAGERY [J].
Zhao, Lingli ;
Yang, Jie ;
Li, Pingxiang ;
Shi, Lei ;
Xu, Jinyan .
2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS), 2016, :4714-4717