That's the actual data it contains houses and structures
The Lidar point cloud has a classification attribute that lets you filter the data. You can take the class=2 points to get the ground [1].
[1]: https://www.swisstopo.admin.ch/de/hoehenmodell-swisssurface3...
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The Lidar point cloud has a classification attribute that lets you filter the data. You can take the class=2 points to get the ground [1].
[1]: https://www.swisstopo.admin.ch/de/hoehenmodell-swisssurface3...