Vtk point set registration

@lassoan Thanks for letting me know. I’ve been looking at ITK. It seems very slow but I’m not sure if I’m implementing it correctly. I have about 30K points I need to register against.

In your experience does this algorithm take a lot of time? I was hoping it would be faster than CPD which is what I’m using now. but it does not seem like it is

Thanks,
~Shane