intersect point cloud with a mesh

[nikoue]

Hello. I have a point cloud of an airport.
I also have made some theoretical obstacle limitation surfaces.
Is there a way to classify the points which are above these surfaces?
the surfaces are NURBS from rhino but i can convert them to a mesh file like obj.
Thank you.

[daniel]

Would computing distances between the cloud (points) and these nurbs surfaces be sufficient? (i.e. use the resulting distance to classify the points?)

[nikoue]

thanks a lot i will try

Happy new year