Height data NDH Stonglandet-Silsand 5pkt 2017

Elevation data provides a detailed description of terrain and surface. The data are established as point clouds from airborne laser scanning or matching from aerial images. The point clouds have varying density (point/m²) for different purposes. From the point clouds, elevation models are generated on grid format of terrain (DTM) and surface (DOM). Elevation data provides a detailed description of terrain and surface. The data are established as point clouds from airborne laser scanning or matching from aerial images. The point clouds have varying density (point/m²) for different purposes. From the point clouds, elevation models are generated on grid format of terrain (DTM) and surface (DOM). Elevation data provides a detailed description of terrain and surface. The data are established as point clouds from airborne laser scanning or matching from aerial images. The point clouds have varying density (point/m²) for different purposes. From the point clouds, elevation models are generated on grid format of terrain (DTM) and surface (DOM).高程数据可对地形与地表实现精细化刻画。该类数据可通过机载激光扫描生成点云，或通过航空影像匹配获取点云。点云的点密度（单位：点/平方米）因应用场景不同而存在差异。基于此类点云，可生成适配地形的网格格式高程模型（数字地形模型，Digital Terrain Model，DTM）以及适配地表的网格格式高程模型（数字地表模型，Digital Surface Model，DOM）。高程数据可对地形与地表实现精细化刻画。该类数据可通过机载激光扫描生成点云，或通过航空影像匹配获取点云。 点云的点密度（单位：点/平方米）因应用需求不同而有所差异。 基于此类点云，可生成地形（DTM）与地表（DOM）的网格格式高程模型。高程数据可对地形与地表实现精细化刻画。 该类数据可通过机载激光扫描生成点云，或通过航空影像匹配获取点云。 点云的点密度（单位：点/平方米）因应用场景不同而存在差异。 基于此类点云，可生成地形（DTM）与地表（DOM）的网格格式高程模型。