| 基于遥感水边线的潮滩面积提取方法研究 |
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| 引用本文： | 张媛媛,高志强,刘向阳,许宁.基于遥感水边线的潮滩面积提取方法研究[J].海洋开发与管理,2018,35(3):56-61. |
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| 作者姓名： | 张媛媛 高志强 刘向阳 许宁 |
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| 作者单位： | 中国科学院烟台海岸带研究所;中国科学院大学,中国科学院烟台海岸带研究所,中国科学院大学;中国科学院地理科学与资源研究所,商丘师范学院 |
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| 摘 要： | 潮滩作为动态变化的后备土地资源,对其研究具有重要意义。文章以江苏省如东县为研究区,使用环境资源卫星(HJ1A/1B)影像为数据源,应用面向对象技术创建分类规则,实现批量半自动提取水边线,随后利用DSAS软件处理水边线集获得潮位点集,基于最外边界法实现高(低)潮位点的提取,进而获得潮滩范围,估算的如东县潮滩面积为55 182hm~2。最后利用误差矩阵进行精度验证(Kappa系数为0.945)。结果表明:该方法对于潮滩面积提取具有适用性,无论在空间域还是时间域都具有一定的推广性。
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| 关 键 词： | 遥感 水边线 面向对象 潮滩面积 误差矩阵 |
The Extraction Method of Tidal Flat Area Based on Remote Sensing Waterlines |
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| ZHANG Yuanyuan,GAO Zhiqiang,LIU Xiangyang and XU Ning.The Extraction Method of Tidal Flat Area Based on Remote Sensing Waterlines[J].Ocean Development and Management,2018,35(3):56-61. |
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| Authors: | ZHANG Yuanyuan GAO Zhiqiang LIU Xiangyang and XU Ning |
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| Abstract: | Reclamation caused a significant dynamic change in tidal flat,as an unstable reserve land resource,tidal flat has important significance for its research.In order to realize the efficient extraction of the tidal flat information,this paper took Rudong county in Jiangsu province as the research area,using the HJ1A/1B images as the data source,on the basis of previous research experience and literature review,the paper chose the method of object-oriented classification as a semi-automatic extraction method to generate waterlines .Then waterlines were analyzed by DSAS software to obtain tide points,automatic extraction of outer boundary points were followed under the use of Python to determine the extent of tidal flats in 2014 of Rudong county,the extraction area was 55 182 hm2,the confusion matrix was used to verify the accuracy and the result showed that the kappa coefficient is 0.945.The result showed an applicability and operability to extract tidal flat information from time and space domain. |
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| Keywords: | Remote sensing Waterline Object-oriented classification Tidal flat area Error matrix |
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