基于单时相高分辨率遥感影像的震后道路提取研究 |
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引用本文: | 常泽岫,吉长东,李慧,荆林海.基于单时相高分辨率遥感影像的震后道路提取研究[J].测绘与空间地理信息,2017(12):68-72. |
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作者姓名: | 常泽岫 吉长东 李慧 荆林海 |
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作者单位: | 1. 辽宁工程技术大学测绘与地理科学学院,辽宁阜新,123000;2. 中国科学院遥感与数字地球研究所数字地球重点实验室,北京,100094 |
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基金项目: | 中国科学院“百人计划”项目,国家科技支撑计划专题,高分辨率对地观测系统重大专项 |
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摘 要: | 地震发生后,道路是生命救援及运输物资的重要通道,因此,快速有效地获取道路的信息是震后抢险救灾非常关键的一步。在震前影像及矢量数据等缺失的情况下,本文基于2014年8月3日云南鲁甸地震的单时相高分辨率World View-2遥感影像进行了震后毁损道路提取方法研究。在提出的一个震后毁损道路提取方法中,先在e Cognition软件中对影像进行多尺度分割和最邻近分类,然后在Matlab软件平台下对分类结果进行二值化,并用数学形态学技术去除偏大和偏小的地物,最后利用Hough变换进行道路检测得到毁损的路段。实验结果证明:该方法能够快速有效地提取出震后的山区道路毁损信息,可为地震应急提供信息支持。
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关 键 词: | 高分辨率遥感影像 面向对象分类 地震 道路 数学形态学 Hough变换 |
Damaged Road Extraction from Semi-Post High Resolution Remote Sensing Imagery |
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Abstract: | After an earthquake,roads act as important transportation junctions and facilitate post-disaster rescue and transportation of goods.It is critical to efficiently identify semi-post damaged roads.In this paper,an extraction method for semi-post damaged roads is established,based on single-temporal high resolution remote Sensing Imagery.In this method,the image is initially multi-scale segmented with eCognition package and classified using the nearest neighbor approach,the resulting classification is re-classified into two classes,the small and large patterns in the binary classification map are morphologically removed,and finally,Hough transform is applied to extract damaged roads.In an experiment using a semi-post WorldView-2 Image of the earthquake occurred in Ludian County,Yunnan Province,on August 3,2014,the proposed method efficiently offered damaged roads for earthquake rescue. |
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Keywords: | high resolution imagery remote sensing object-oriented classification earthquake damaged road morphology Hough transform |
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