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Strategic Study of CAE >> 2013, Volume 15, Issue 5

An algorithm of neighbor relationship oriented contour tree building

Chinese Academy of Surveying and Mapping, Beijing 100830, China

Funding project:国家测绘地理信息局科技基金资助项目(A1118) Received: 2013-03-21 Available online: 2013-05-13 13:48:34.000

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Abstract

A contour tree has been found many important applications in extraction of terrain structure lines, terrain analysis, etc. A regular contour tree expressing the spatial relationship of contours is difficult to build, even with data of high quality. A new method is proposed in this paper: classify contours into close group and open group; build contour tree for each group respectively; finally amalgamate these two contour trees into one. With the elevation values, spatial relationship of contours is of easy accessibility. The result shows that the above mentioned method is correct and effective.

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References

[ 1 ] 毋河海. 等高线树的自动建立及其应用[J]. 测绘科技动态,1996 (1):2-7. link1

[ 2 ] 张琳琳,武 芳,王辉连. 等高线空间关系的确定及应用[J]. 测 绘通报,2005(8):19-22. link1

[ 3 ] 王 涛. 地貌信息提取中的结构化问题研究[D]. 武汉:武汉大 学,2005. link1

[ 4 ] 张琳琳. 地貌自动综合的结构化方法研究[D]. 郑州:信息工程 大学,2005. link1

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