In this paper, the methods of drawing contour line from terrain map, the vector of contour line and generating elevation data from vector data are discussed.
论述了从地形图中提取等高线、对等高线矢量化以及通过矢量数据生成高程数据的实现方法。
This paper introduces a simple but practical method to create high-quality contour line for grid data.
本文介绍了一种简单实用的基于规则格网数据绘制高质量等值线图形的方法。
The result of this method is content to contour line matching by building variant feature quality, constructing data structure, dealing with matching process's detail.
该方法通过提取曲线的相对不变特征量，构建数据结构，细致地处理匹配过程的细节，对轮廓曲线的部分匹配有着较为满意的匹配效果。
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