I got two sets of point cloud to align. How can I align them by picking a few points from the two point clouds respectively? A rigid transform will work for me. However, if someone knows how i would also love to know how to do some non-rigid transform.

If you isolate the same set of points from both pointclouds in the same order then Extract Transform SOP will give you the best fit rigid transform that you can use to align the full versions of pointclouds


If you have surfaced versions of those pointclouds you can potentially use Topo Transfer SOP to apply non rigid transform based in matching location markers