Height data NDH Gaular-Highanger-Balestrand 2pkt 2019

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（Elevation data）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（airborne laser scanning）或航空影像匹配（aerial image matching）生成点云（point clouds）。此类点云的密度（点/平方米）因应用场景不同而存在差异。基于此类点云，可生成地形与地表的格网格式高程模型，其中地形模型为数字地形模型（Digital Terrain Model, DTM），地表模型为数字地表模型（Digital Surface Model, 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或航空影像匹配生成点云。此类点云的密度（点/平方米）因应用场景不同而存在差异。基于此类点云，可生成地形与地表的格网格式高程模型，其中地形模型为数字地形模型，地表模型为数字地表模型。 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或航空影像匹配生成点云。 此类点云的密度（点/平方米）因应用场景不同而存在差异。 基于此类点云，可生成地形与地表的格网格式高程模型，其中地形模型为数字地形模型，地表模型为数字地表模型。