Non-Rigid Registration of 3D Points

I am looking for a way to perform non-rigid registration on 3d point cloud data. The data only includes the x,y,z locations of each point. Something similar to pcregrigid would be ideal but that is a non-rigid transformation. I have also considered converting the point cloud to an image and then using imregdemons to achieve a similar result. However, I am unsure of how to convert the point cloud data to an image. Any suggestions on either approach would be greatly appreciated.

Answer 1

[Mudambi Srivatsa]

The following post might be helpful in converting the point cloud data to an image:

https://www.mathworks.com/matlabcentral/answers/228917-3d-point-cloud-to-2d-depth-image

Also, the following might be helpful for performing non-rigid registration on 3d point cloud data:

https://www.mathworks.com/matlabcentral/fileexchange/54077-optimal-step-nonrigid-icp
https://www.mathworks.com/matlabcentral/fileexchange/22337-robust-nonrigid-point-set-registration
https://www.mathworks.com/matlabcentral/fileexchange/41396-nonrigidicp