Hello all,
I currently have a project creating DEMs. We use GCPs out in the field and we use an RTK-GPS system to get elevation with accuracy of 5cm. we use about 10-15 GCPs for about 300 meter length site. My current workflow for creating the DEM is :
-placing the GCPs
-creating the dense point cloud
-classifying ground points (high vegetation at this site, we dont care about the vegetation)
-building the mesh BASED off the classification
-clean out some geometry/vegetation
-build the DEM from the MESH not the dense cloud
When I was building the DEMs from the dense cloud it was bringing in all the vegetation which we do not need even if I use the ground point classification?
The tutorial states:
"Digital elevation model can be generated based on the dense cloud or mesh model. Usually first
option is preferred, as it provides more accurate results"
How much more accurate is the dense cloud compared to the mesh?
Thank you!