QGIS calculated a Modèle numérique de surface (MNS - the second image / digital surface model), and an elevation model. 🗺️
But there a problem : we don't have (yet), RGB colors in our lidar datas ! So, we can just color form the elevation. Not create a real image of the terrain, with threes, factories... sad.
@ChristopheLeBas The second one is the 2D layer corresponding to your LIDAR data. QGIS displays all 2D layers by default, in a 3D view. Without any elevation it is at elevation 0, so below your 3D data. You can disable the 2D layer, or specify a DEM to use as elevation so that the 2D layer will be projected onto the DEM, theoritically at the same place as the PointCloud data.
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