- first you need to isolate your point cloud to a related to your object .
this step you need to use supervising learning as shown in the below link:
or used unsupervised learning to cluster your point cloud related to the object
Pointcloud ICP registration
- secand you need an optimization tools to optimize your revit family parameter (your object) to fit with the cluster pointcloud. (I didn’t try it). or convert it to mesh as @GavinCrump wrote.