[ITK-users] error executing in median filter for nifty(nii) file

[Bill Lorensen]

Are you building your ITK and Median program in Release mode? If it is
build in Debug mode, the times can be 10-100 times slower.


On Tue, Apr 22, 2014 at 6:54 AM, neela <avcneela at gmail.com> wrote:
> hi
>
> i am new to itk programming.  I want to just simple filter(say median
> filter) for nii file.  I changed the MedianImageFilter.cxx program available
> with ITK as follows: (change size from 2 to 3) and include radius along z
> direction.
>
> #include "itkImageFileReader.h"
> #include "itkImageFileWriter.h"
>
> #include "itkMedianImageFilter.h"
>
> int main( int argc, char * argv[] )
> {
>   if( argc < 3 )
>     {
>     std::cerr << "Usage: " << std::endl;
>     std::cerr << argv[0] << "  inputImageFile   outputImageFile" <<
> std::endl;
>     return EXIT_FAILURE;
>     }
>
>
>   typedef   unsigned char  InputPixelType;
>   typedef   unsigned  char  OutputPixelType;
>
>   typedef itk::Image< InputPixelType,  3 >   InputImageType;
>   typedef itk::Image< OutputPixelType, 3 >   OutputImageType;
>
>   typedef itk::ImageFileReader< InputImageType  >  ReaderType;
>   typedef itk::ImageFileWriter< OutputImageType >  WriterType;
>
>   ReaderType::Pointer reader = ReaderType::New();
>   WriterType::Pointer writer = WriterType::New();
>
>   reader->SetFileName( argv[1] );
>   writer->SetFileName( argv[2] );
>
>   typedef itk::MedianImageFilter<
>                InputImageType, OutputImageType >  FilterType;
>
>   FilterType::Pointer filter = FilterType::New();
>   InputImageType::SizeType indexRadius;
>
>   indexRadius[0] = 1; // radius along x
>   indexRadius[1] = 1; // radius along y
> indexRadius[2] = 1; // radius along z
>
>   filter->SetRadius( indexRadius );
>
>   filter->SetInput( reader->GetOutput() );
>   writer->SetInput( filter->GetOutput() );
>   writer->Update();
>
>
>
>   return EXIT_SUCCESS;
> }
>
> But it works well for JPG images, when i tried for DCM images i got only
> partial output (only one slice) where as for nii image system hangs.
> Anybody please help me.
>
> thanks
>
>
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