[ITK] [ITK-users] Own Transformation Class

[dominik]

Hey guys, 

I have been working on a project in Slicer which is about registering
histology slices to an MRI volume of the same subject. So far everything was
straight-forward but now the implemented registration algorithms in Slicer
are coming to their limits and I think I have to write some of the stuff
myself in ITK. I can use SimpleITK in python or the C++ version in Slicer
depending on which plugin I want to write. The stuff I wrote so far is in
Python but I think I can write another plugin in C++ just for the
registration algorithm and execute this in my Python plugin. 

So, now to the questions: 

- I'd like to constraint the registration algorithm because both modalities
have a very robust feature which is the urethra. So I'd like the
registration algorithm to stay as it is and just limit the transformation so
the histology-urethra follows the MRI-urethra and the rotation center is in
the urethra. I read in the slicers forum that I can write my own
transformation class for this but I didn't have a lot of success so far so
I'm thankful for more hints on how to write my own transformation class or
any other solutions. 

- Once every histology slice is registered, I'd like to merge these slices
to one. Is there an easy solution in ITK for this? I read the
ResampleImageFilter is usable for this but so far I just understood that it
resamples an image depending on how you transform it. 

Cheers!



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