DSM-Feiyan Aerial Remote Sensing Technology Co.,Ltd.

Data Processing

DSM

Digital Surface Model (DSM) captures the vegetation and built features together with the land. In comparison, Digital Elevation Model (DEM) captures only the bare-earth raster grid. For example, man-made constructions including powerlines, bridges, and buildings and vegetations aren’t included in a DEM, but they are included in DSM.

DSM can be applied in aviation planning, urban planning, utilities, and telecommunications. For example, Feiyan has just done a 60,000 km2 forestry investigation project that helps local forestry department understand local forest encroachment. The project used RIEGL VQ-1560i sensor to obtain billions of LIDAR points cloud reflected with varying elevation values. Those point clouds could be reflected from the top of buildings, vegetations, and bridges. Therefore, a continuous DSM model could be generated from the point cloud.