Extracting displacement fields from rigid registration

Beginner Questions
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7

Hi! I’m back :slight_smile: .

I’ve got a little step forward:

displ_filt = itk.TransformToDisplacementFieldFilter[itk.Image[itk.Vector[itk.F,3],3], itk.D].New()

In the example which is linked above, the deformation field is provided as an input (deformationField = fieldReader.GetOutput()). I already tried to look into the documentation mentioned by @matt.mccormick over here, and with help(displ_filt). Right now, I am unsure of how to get the deformation field from the registration or movingInitialTransform. Any tips? Thank you in advance.

It’s nice to be back.