Data.zip

The data are divided into two parts:(1) In the original folder, there are original contour lines , boundary of contours and corresponding DEM(2)The extraction results including extracted feature points (original extracted feature points and filtered feature points),extracted terrain feature lines based on contour lines, as well as the extraction results of terrain feature lines based on DEM.本数据集分为两个部分： (1) 原始文件夹内包含原始等高线、等高线边界以及对应的数字高程模型（DEM）； (2) 提取结果涵盖提取得到的特征点（含原始提取特征点与滤波后特征点）、基于等高线提取的地形特征线，以及基于DEM的地形特征线提取结果。