Скачать с ютуб UMEP 3: Generating spatial input data (DEM, DSM, CDSM) from a LiDAR point cloud в хорошем качестве

UMEP 3: Generating spatial input data (DEM, DSM, CDSM) from a LiDAR point cloud

The purpose of this tutorial is to show how to generate spatial input data for UMEP using various tools available in CloudCompare and QGIS to process data obtained by airborne LiDAR point clouds. The spatial input data generated in this tutorial include Digital Elevation Model (DEM), Digital Surface Model (DSM) and Canopy Digital Surface Model (CDSM). The tutorial has two parts: 1. In the first part you will focus on generating spatil data entirely from LiDAR point clouds using Cloud Compare and QGIS. 2. In the second part you will learn how to generate a DSM using the pre-processor tool (DSM generator) available in UMEP using a pre-dowloaded DEM and a Polygon shapefile (.shp) of building footprints with respective heights. More info and datasets: https://umep-docs.readthedocs.io/proj... https://elevation.fsdf.org.au/ Video Content: 00:00 Intro to UMEP's spatial input data and DSM generator 02:12 Downloading LiDAR data 04:38 Segmenting LiDAR point clouds 07:00 Generating DEM, DSM and CDSM 14:22 Creating a study area and clipping rasters 25:25 Using the DSM Generator available in UMEP 30:15 Comparing both DSMs methods 33:38 Visualising results in 3D using Qgis2threejs Plugin