| 1. | In this thesis , the contour track method faced to dem data , which is based on the thought that translates the contour information to dem data , is put forward , and one effective inserted inside algorithm that relates on the contour interpolation generating dem data is found 本文旨在将地形图中等高线信息快速转化为格网dem数据,提出了面向dem数据提取的等高线跟踪方法,以及一种利用等高线内插生成dem数据的有效算法,最后实现了一个完整的dem数据提取与误差分析系统。 |