Invalid transformation chosen error - 4DCT registration

Community SlicerAutoscoperM
1

Any insights into why I’m getting this error (please see image below)

image
image1915×763 285 KB

Here’s what I’ve tried and how I managed to bypass it. FYI this dataset has some motion artifact, and part of the distal radius is not visible.

  1. I placed all the models (radius, capitate, and lunate) inside the radius, and ran Hierarchical3DRegistration. It only registered the first two frames
  2. I also tried placing all models inside the capitate and the lunate. In all cases, the registration only worked for the first two frames.
  3. I was able to by pass the issue by not nesting any models inside others and instead registering each frame at a time.

Any thoughts or suggestions would be appreciated!

2

Hey @Cesar

I know you know about the enhancements that were merged into 3DH to correct for this.. would you mind adding some updates to share with the community/category?

Thank-you!

3

Hierarchical3DRegistration is doing a great job registering all bones together! Here’s what I did:

  1. Nested all bones inside the radius

  2. Initialized registration by adjusting the volume rendering of the sequence for better visualization.

  3. Set the initial guess and registered all bones

The video below shows all the steps to register the first frame

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