Optimize Millitome Registration Outputs

[desaibhargav]

Optimize parameters for better registrations, example:

Current

Optimized

(left is the HRA Reference and right is the achieved optimized registration)

[J-Yash]

Models where this optimization is needed:

1. Pancreas

2. Uterus

[bherr2]

@J-Yash close if done. Otherwise suggest what remains to optimize.