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

[Carl Bateman]

Hi,

I can't work out how to implement
  itk::VectorGradientMagnitudeImageFilter<VectorImageType>

I've tried using 
  itk.itkGradientMagnitudeImageFilter_IF3IF3

but it doesn't seem to have an equivalent to
  SetUsePrincipleComponents()

Any suggestions?

TIA

Carl

>>> Luis Ibanez <luis.ibanez at kitware.com> 22/04/2010 16:49 >>>
Hi Carl,

That what the paper on ManagedITK will describe for you.

Have you read the paper ?


     Regards,


             Luis


-----------------------------------------------------------------------------
On Thu, Apr 22, 2010 at 11:47 AM, Carl Bateman <Carl.Bateman at icr.ac.uk>wrote:

> Hi Luis,
>
> ah yes, but how do I convert it to C#?
>
> TIA
>
> Carl
>
> >>> Luis Ibanez <luis.ibanez at kitware.com> 22/04/2010 16:02 >>>
> 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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> Company Limited by Guarantee, Registered in England under Company No. 534147
> with its Registered Office at 123 Old Brompton Road, London SW7 3RP.
>
> This e-mail message is confidential and for use by the addressee only.  If
> the message is received by anyone other than the addressee, please return
> the message to the sender by replying to it and then delete the message from
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>

The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.

This e-mail message is confidential and for use by the addressee only.  If the message is received by anyone other than the addressee, please return the message to the sender by replying to it and then delete the message from your computer and network.