Clean up and animate photogrammetry

Hi!

Beginners questions: I have used photogrammetry to scan a building. The mesh got really big so first of all I need to clean it up, what is the simpliest way to do so?
I also want to use that mesh and animate it. How can I do that?
Later I want to import the scen with the mesh into unity, is there something extra I need to think about?

Thanks for the help!!

Hi & welcome back.

Here’s the whole deal.
Tasks, in principle @ 1:01:00.


Specifics depend on a tool in use.
Enjoy