摘要
等高线数据是陆地地貌数据的主要部分。本文分析了等高线数据质量的检查内容及其检查方法，重点研究了等高线相交、打折、回点和重合等错误情况的检查算法。对已有方法加以改进，使得算法更加易于实现，并对算法的执行效率进行了分析比较。
Contour data are the main part of land geomorphological data. The contents and corresponding checking methods for the data quality of contour map are analyzed in this paper. The existing algorithms for checking of intersection, salient and coincidence among contour lines are mainly discussed and partly improved. Experiments show that the proposed algorithm improves the efficiency and is easy to be realized.
出处
《测绘科学与工程》
2009年第1期40-45,共6页
Geomatics Science and Engineering
关键词
等高线
数据质量检查
线段相交
平面扫描法
contour line
data quality check
intersection of lines
plane scanning method
