Question on Rotation Methods in the Paper

[jk4011]

Thank you for your excellent work.
I really enjoyed reading your paper.

I have a question regarding the rotations mentioned in your paper.

Specifically, your paper introduces two types of rotations: the MLP-based rotation in Eq.4 and the SVD-based rotation in Eq.9.

I’m curious why you introduce the SVD rotation instead of relying solely on the MLP rotation. Wouldn’t the MLP rotation alone suffice to maintain the ARAP (as-rigid-as-possible) principle?

Could you please clarify if there’s something I might be misunderstanding?

Thank you in advance for your time and help.