Altitude data Verdal-Sandvika 2011

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进行精细化描述。该类数据通过机载激光扫描获取点云，或通过航空影像匹配生成点云；此类点云的点密度（单位：点/平方米）因应用需求不同而存在差异。基于上述点云，可生成格网格式的地形数字高程模型（DTM，Digital Terrain Model）与地表数字高程模型（DOM，Digital Surface Model）。高程数据可对地形与地表进行精细化描述。该类数据通过机载激光扫描获取点云，或通过航空影像匹配生成点云；此类点云的点密度（单位：点/平方米）因应用需求不同而存在差异。基于上述点云，可生成格网格式的地形数字高程模型（DTM）与地表数字高程模型（DOM）。高程数据可对地形与地表进行精细化描述。 该类数据通过机载激光扫描获取点云，或通过航空影像匹配生成点云。 此类点云的点密度（单位：点/平方米）因应用需求不同而存在差异。 基于上述点云，可生成格网格式的地形数字高程模型（DTM）与地表数字高程模型（DOM）。