Is automatic physical feature detection possible?

[Kwanmok]

I am trying to detect a specific physical feature (not based on RGB) from the dense point cloud. For example, across a landscape with many ground pits (holes), I would like to detect ground pits (holes) with specific shapes. I was thinking of a supervised way where I delineate specific shapes (3D) I want and the program finds (or classify) the area with similar/identical features. I am aware that the CloudCompare has plugins like CSF and CANUPO but I am not sure their algorithm is based on physical distances (and features) but rather an RGB...

[daniel]

Actually Canupo is probably your best chance as it is based on the shape and not on color. Pay attention that the scale of things has a big importance though. If your holes have more or less the same scale then it should be ok. Of course you can also use several classifiers.