Deformable Registration

srbn.ghosh89 · April 16, 2020, 5:27pm

Hi,

I am trying to do a deformable registration after doing a landmark-based registration between a triangular simplex mesh and CT image.

In the snapshot, after using a landmark-based registration I got the registered bone mesh(The colored outline) and volume. To do a perfectly aligned registration, I want to do a deformation.
Is it possible to do a deformable bone mesh registration using ITK?
I have attached the files in the link.
https://drive.google.com/drive/folders/1M4N3zyPowHToFYmzRPkeFAqMK-woe9cv

Regards
Shrabani Ghosh

dzenanz · April 16, 2020, 5:44pm

ITK has a lot of deformable registration examples. Most interesting to you should be these two:
ModelToImageRegistration1.cxx
ModelToImageRegistration2.cxx

srbn.ghosh89 · April 17, 2020, 2:59pm

Hi,

In these examples, Can I save the registered object? It only shows the transformation values.

Regards
Shrabani Ghosh

dzenanz · April 17, 2020, 3:05pm

If you want to save the image, use resample filter. If you want to save the mesh, simply update each point’s position by the transform’s TransformPoint method, and then save it.