Surface Scan Registration

Support
2

I could get perfect registration results (0.025mm RMS error) with basic methods:

  1. Crop the part of the rod that is not visible in the bone surface scan image (I used MeshLab for this for now)

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  1. Do a very quick, approximate registration on 3 points using Fiducial registration wizard, harden the transform

  2. Use Model registration to fine tune the alignment

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Good: All computations are instant (takes fraction of a second). Alignment is perfect.

Not so good: Manual cutting of non-common surfaces and manual prealignment is needed. It takes just 1-2 minutes, but requires attention.

There is a good chance that more sophisticated 3D surface template matching methods would work robustly without these manual steps (see for example OpenCV surface matching algorithm).