| 基于主干河流修正TIN构建的DEM平原区河网提取 |
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| 引用本文： | 王官勇,载仕宝.基于主干河流修正TIN构建的DEM平原区河网提取[J].滁州学院学报,2011,13(5):126-128. |
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| 作者姓名： | 王官勇 载仕宝 |
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| 作者单位： | 滁州学院地理信息与旅游学院,安徽滁州,239000 |
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| 基金项目： | 国家自然科学基金项目，安徽省自然科学基金项目，滁州学院科研项目 |
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| 摘 要： | 平原地区的河网提取一直是基于数字高程模型(DEM)的水系提取的难点。尝试利用主干河流修正不规则三角网(TIN),以提高DEM平原地区地形模拟的精度(基本方法为利用已存在的主干河流线,对其所经区域进行高程赋值,约束TIN的构建,然后进行DEM模拟),基于此进行平原区河网提取。实验表明,此种方法下,平原区提取的主干河流与实际河流有较大的吻合。
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| 关 键 词： | 主干河流修正 TIN构建 DEM 平原区河网提取 |
Plain Drainage Network Extraction Based on the DEM Enhanced by the Stem-River Imbedded TIN |
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| Wang Guanyong,Dai Shibao.Plain Drainage Network Extraction Based on the DEM Enhanced by the Stem-River Imbedded TIN[J].Journal of Chuzhou University,2011,13(5):126-128. |
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| Authors: | Wang Guanyong Dai Shibao |
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| Institution: | (Geographic Information and Tourism College,Chuzhou University,Chuzhou Universtiy 239000) |
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| Abstract: | Plain drainage network extraction has always been a tough task in the river system extracting based on the Digital Elevation Model（DEM）.In this paper we tried to imbed the stem river in the TIN and thus to improve the precision of the DEM.Based on this improved DEM,we tried to extract the river system in the plain.The results show that the extracted river system fit well with the actual river network by this method. |
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| Keywords: | Stem River Modification TIN Building DEM Plain Drainage Network Extraction |
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