[vtkusers] itk::BinaryPruningImageFilter - How to set Length/Iteration Parameters

[Flo]

Dear all:

I am using BinaryThinningImagefilter in conjunction with  
BinaryPruningImagefilter.
After superimposing the thin skeleton with the prunned skeleton, I  
realized that the Pruning process doesn't have any effect (almost).

I did not find much information on how to set the Prunning Process  
parameters such as the length of the branches to be removed or the  
Iterations criterion (i.e. from every end point to the first branch  
junction - stupid but might be useful as a start).

Right now, I just have a:

typedef itk::BinaryPruningImagefilter<Imgtype, Imgtype> PrunedFilter;
PrunedFilter::Pointer FilteringProcess = PrunedFilter::New();
FilteringProcess->SetInput (thinning->GetOutput());
FilteringProcess->Update();

Once again, the thinning process is as expected, but the Pruning  
seems to start but stop after removing not even a whole branch.

Can anybody point me out to some more information on how to set this  
BinaryPruningImageFilter ? Are there any other reviewed  
skeletonization process in ITK ?

regards,
Flo.