Procrustes alignment


(Fernando Pugliese) #1

Hi, Beatriz and Martin

I was following the tutorial, and I noticed that the rigid-body Procrustes alignment (only translation and/or a rotation) can be used.

I was just wondering how the size would be removed (rescaling step) for a pure shape analysis.

Thanks for the great and very useful tool.


(Martin Styner) #2

Hi Fernando
The SlicerSALT toolkit currently does not allow for “pure” shape analysis, or size-free shape analysis. This based on the main driver for SlicerSALT being biomedical applications, where size-free shape would be extremly hard to interprete. In the code, the procrustes scale normalization is actually being computed, it’s just not applied. As a workaround, you could edit the code yourself and recompile (this is not optimal, I understand).

Martin


(Fernando Pugliese) #3

Thank you very much for the feedback.