[Insight-developers] Prototype DTI fiber tracking in ITK, next iteration

[Torsten Rohlfing]

Greetings!

As a follow-up to the previous discussion, here's an updated prototype 
DTI fiber tracking implementation:

http://www.stanford.edu/~rohlfing/itk_fiber_tracking_2005-08-08.tar.gz

Compared to the previous version, I have taken the code that computes a 
line segment direction from a tensor out of the iterator class and moved 
it into a helper class.

I have added one such helper class, 
itk::TensorStreamlineDirectionEigenvectorHelper which basically does 
what the iterator class used to do: determine the tensor's eigenvector 
that corresponds to the largest eigenvalue. With this code in a helper 
class, however, it is now easy to put in other direction finders, 
specifically a Monte Carlo-type random sampling.

As before, comments and suggestions are welcome. And as I mentioned, 
Bill and Karthik, if you feel sometimes after the next release that you 
want to commit this code to CVS, you have my okay. In the meantime, I 
might spend some more time on implementing more telling test cases.

Best,
  Torsten

-- 
Torsten Rohlfing, PhD          SRI International, Neuroscience Program
 Research Scientist             333 Ravenswood Ave, Menlo Park, CA 94025
  Phone: ++1 (650) 859-3379      Fax: ++1 (650) 859-2743
   torsten at synapse.sri.com        http://www.stanford.edu/~rohlfing/

     "Though this be madness, yet there is a method in't"