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基于DEM的长城遥感信息提取方法研究

DOI: 10.11834/jig.20070831

Keywords: 八达岭长城,遥感,DEM,地形分析,信息提取

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Abstract:

长城已被列为濒危的世界文化遗产之一。由于长城分布的于线很长,调查困难,致使长城家底不清,保护管理工作很难进行。本文提出一种从遥感影像上快速提取长城的方法。本文选取了典型砖石结构的八达岭段长城,利用SPOT5遥感数据,对其进行NDVI处理,初步提取“类长城地物”;再利用1:10000DEM数据提取山脊线建立缓冲区,将两者进行叠合提取长城,再通过形状指数法去除多余图斑,得到最终结果。应用上述技术路线提取出的八达岭长城与已有资料进行比对提取精度较高。

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