Hi all,
I classified a pointcloud into ground and nonground. Afterwards I duplicated the chunk and build the DEM in both chunks. One DEM was the real DEM, means ground and nonground points. The other "DEM" was the actual DTM (surface / terrain) made of only ground points.
Now the problem:
I got some markers far away from trees, buildings etc... At this markers I ve got an elevation difference between those two DEM/DTM of about 10 upto 20 cm. Does anybody have an idea why that happens?
thank you very much
jeffafah