Re: [vmtk-users] VEDM conductance variable

[Luca A. <luc...@gm...>]

Hi David,
  indeed the anisotropic diffusion module you're probably referring to  
is not the equivalent of ved or vedm in vmtk.
The former, probably, but if you let me know the exact name I can  
confirm, is based on the itk::CurvatureAnisotropicDiffusionImageFilter  
ITK class, which is not specific to vessels - see here for details: http://public.kitware.com/Insight/Doxygen/html/classitk_1_1CurvatureAnisotropicDiffusionImageFilter.html)
which is different from vessel enhancing diffusion, here:
http://www.insight-journal.org/browse/publication/314 (vedm)
and here:
http://www.insight-journal.org/browse/publication/163 (ved)
Note that Slicer has a SlicerVMTK extension developed by Daniel Haehn,  
where you'll find ved among the vessel enhancement tools.
Hope this helps.
Best regards


Luca



On Jan 26, 2010, at 10:07 PM, David Welch wrote:

> Hi all,
>
> I'm smoothing some CT data and I've been using Slicer to smooth and  
> compare the data before I move to VMTK.  The gradient anisotropic  
> diffusion filter in Slicer has three parameters: conductance,  
> timestep, and iterations.  I've settled on my parameters and I see  
> that in vmtkimagevesselenhancement there are a lot more variables  
> available there than in the Slicer module.  What I'd like to know is  
> what VMTK flag correlates to Slicer's 'conductance' parameter?  Do  
> these even compare, or does Slicer use the old ved filter?  I'm  
> using the 'vedm' filter in vmtk because it is supposed to be more  
> accurate.
>
> Thanks all!
>
> -- 
> David Welch
> Graduate Student
> Dept. of Biomedical Engineering
> University of Iowa
> Lab: (319) 335-5279
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