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A New Method of Automatically Identifying Orographic Character Line in Contours
Author(s): 
Pages: 21-23
Year: Issue:  3
Journal: HYDROGRAPHIC SURVEYING AND CHARTING

Keyword:  等高线树似Douglas变换地性线自动识别;
Abstract: 通过等高线树构建出各条等高线的空间关系,采用计算几何中的凸壳和Douglas算法,建立了似Douglas变换模型,提出了一种自动识别山脊线和谷底线的新方法.理论和实践结果表明,用该方法提取的地性线结构性强、精确度较高,用于地貌形态的自动综合中是完全可行的.
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