[Insight-users] how to use ReinitializeLevelSetImageFilter

[Luis Ibanez]

Hi Baoyun,


It looks like you missed to call the method:

                  SetLevelSetValue()

before you called Update() in the filter.

For guidance, please look at the file:

    Insight/Testing/Code/Algorithms/
          itkReinitializeLevelSetImageFilterTest.cxx


       Regards,


              Luis


------------------------------------------------------
On Mon, Mar 1, 2010 at 2:56 PM, Baoyun Li <baoyun_li123 at yahoo.com> wrote:

> Dear All:
>
> I tried to use ReinitializeLevelSetImageFilter. The output looks weird to
> me.
>
> The input to the filter is binary image binary image with float type
> (255 as forground, 0 as background).
>
> I tried narroow band on and off. However, the output of this filter gives
> very high value (10^38) for voxles inside the binary mask. Almost all the
> outside mask voxels has value zero.
>
> Below is my code, can somebody tell where I made mistake.
>
> Baoyun
>
>
> **************************code************************
>    typedef typename itk::ReinitializeLevelSetImageFilter< FeatureImageType
> > DistanceFilterType;
>    typename DistanceFilterType::Pointer DistanceFilter =
> DistanceFilterType::New();
>    DistanceFilter->SetInput( thresholder->GetOutput() );
>   // DistanceFilter->NarrowBandingOn();
>   // DistanceFilter->SetNarrowBandwidth( 10 );
>       try
>     {
>       DistanceFilter->Update();
>     }
>     catch( itk::ExceptionObject & excep )
>     {
>     std::cerr << "Exception caught !" << std::endl;
>     std::cerr << excep << std::endl;
>     }
>
>   m_levelset2=DistanceFilter->GetOutput();
>
> ****************code end*************************
>
>
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