From the customer we get a photogrammetry-scan (with a drone) of a radio-tower.
The file is a 957 MB obj-mesh (including material/picture files).
Order: use the existing mesh as construction-reference for additional steel-parts.
With cloudcompare/FreeCAD I can reduce the mesh to the relevant part.
But the mesh is far to rough. From a previous project at this tower I know the dimensions
of some steel parts. When making an overlay with the mesh, you can see that the scan cant
be used for further work. I used “instantmesh” to produce a quad-mesh. Looks more
detailed, but doesnt help. The computation is RAM-intensive, at minimum 16 GB RAM necessary.
My solution would be to do an additional drone-run with a much higher resolution.
Which means I must fly near by the frame, above the platform, without seeing the drone.
Has anybody experience with such projects?
What drone/camera would you suggest?
Is a predefined/automatic flight possible (I am not a pilot)?
I need a scan-resolution of 5 mm minimum. Is that possible?