Correspondences from FPFH in Python

[Darris01]

Hello,

I'd like to use 3DRegNet to registrate pointclouds. In their paper they say they used FPFH to extract correspondences for the pointcloud pairs in their dataset.

I know that I can compute FPFH with o3d.pipelines.registration.compute_fpfh_feature(...), but how can I then obtain (proposed) correspondences for a pair of my own pcds?