[Insight-users] Converting WatershedSegmentation1.cxx to c# and 3d

[Luis Ibanez]

Hi Carl,


1) Yes, the WatershedSegmentation  example
    should work in N-Dimensions.

    You only need to change lines 95-100 from

  typedef itk::RGBPixel<unsigned char>   RGBPixelType;
  typedef itk::Image<RGBPixelType, 2>    RGBImageType;
  typedef itk::Vector<float, 3>          VectorPixelType;
  typedef itk::Image<VectorPixelType, 2> VectorImageType;
  typedef itk::Image<unsigned long, 2>   LabeledImageType;
  typedef itk::Image<float, 2>           ScalarImageType;

   to

  typedef itk::RGBPixel<unsigned char>   RGBPixelType;
  typedef itk::Image<RGBPixelType, 3>    RGBImageType;
  typedef itk::Vector<float, 3>          VectorPixelType;
  typedef itk::Image<VectorPixelType, 3> VectorImageType;
  typedef itk::Image<unsigned long, 3>   LabeledImageType;
  typedef itk::Image<float, 3>           ScalarImageType;


   and refine the value of the smoothing filter in line 146
   from the current:

               diffusion->SetTimeStep(0.125);

   to the value

             diffusion->SetTimeStep(0.0625);

    that should do the trick.


2)  It should be possible to convert it to C#
     as well...

     Have you seen the following paper ?:

      "ManagedITK: .NET Wrappers for ITK"
       Mueller D.
      Queensland University of Technology (QUT)
     http://www.insight-journal.org/browse/publication/151
     http://hdl.handle.net/1926/501



   Regards,


        Luis


----------------------------------------------------------------
On Thu, Apr 22, 2010 at 10:41 AM, Carl Bateman <Carl.Bateman at icr.ac.uk>wrote:

> I continue to convert the c++ examples, I'm now at
> WatershedSegmentation1.cxx.
>
> Is it possible to extend this method to work in 3d?
> And is it possible to convert it to c#?
>
> I'm having problems converting the following chain of typedefs:
>  typedef itk::Vector<float, 3>          VectorPixelType;
>  typedef itk::Image<VectorPixelType, 2> VectorImageType;
>  typedef itk::VectorCastImageFilter<RGBImageType, VectorImageType>
>  CastFilterType;
>  typedef
> itk::VectorGradientAnisotropicDiffusionImageFilter<VectorImageType,
> VectorImageType>  DiffusionFilterType;
>
> Any help much appreciated.
>
> Regards,
>
> Carl Bateman
>
>
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