3D Shape Analysis

Hi, I’m new to Openframeworks. I’m looking for a way to run 3D shape analysis on two 3D scanned volumes using OpenFrameworks.

Basically, I have two .ply (or .obj) files of a pair of scanned feet that resemble the image below.
Screenshot 2021-07-07 at 11-25-57 human feet + 3d - Google Search

I want to use OpenFrameworks to find similar features or key dissimilarities between both 3D scanned geometry files.