[Insight-users] Debug error in filter example DerivativeImageFilter

[john smith]

Hello to everyone,

I am trying to run the DerivativeImageFilter.cxx from the filter examples of
itk. My project is built corectly but when I run the command prompt window
giving the following parametres: *DerivativeImageFilter input.png output.png
normalize.png 1 0*, I get a Debug error. Does anybody know what is the
problem? Also, what is the *order *in a derivative image filter and what
values does it get in the command prompt window?

Thanks

\\\\\\\\\\\\\\\\\\\\DerivativeImageFilter.cxx\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\


#include "itkImage.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRescaleIntensityImageFilter.h"

#include "itkDerivativeImageFilter.h"



int main( int argc, char * argv[] )
{
  if( argc < 6 )
    {
    std::cerr << "Usage: " << std::endl;
    std::cerr << argv[0] << "  inputImageFile   outputImageFile
normalizedOutputImageFile ";
    std::cerr << " derivativeOrder direction" << std::endl;
    return EXIT_FAILURE;
    }

  typedef   float  InputPixelType;
  typedef   float  OutputPixelType;

  const unsigned int Dimension = 2;

  typedef itk::Image< InputPixelType,  Dimension >   InputImageType;
  typedef itk::Image< OutputPixelType, Dimension >   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::DerivativeImageFilter<
               InputImageType, OutputImageType >  FilterType;

  FilterType::Pointer filter = FilterType::New();
  // Software Guide : EndCodeSnippet


  filter->SetOrder(     atoi( argv[4] ) );
  filter->SetDirection( atoi( argv[5] ) );

  filter->SetInput( reader->GetOutput() );
  writer->SetInput( filter->GetOutput() );
  writer->Update();



  typedef itk::Image< unsigned char, Dimension >  WriteImageType;

  typedef itk::RescaleIntensityImageFilter<
                                  OutputImageType,
                                  WriteImageType >    NormalizeFilterType;

  typedef itk::ImageFileWriter< WriteImageType >       NormalizedWriterType;

  NormalizeFilterType::Pointer normalizer = NormalizeFilterType::New();
  NormalizedWriterType::Pointer normalizedWriter =
NormalizedWriterType::New();

  normalizer->SetInput( filter->GetOutput() );
  normalizedWriter->SetInput( normalizer->GetOutput() );

  normalizer->SetOutputMinimum(   0 );
  normalizer->SetOutputMaximum( 255 );

  normalizedWriter->SetFileName( argv[3] );
  normalizedWriter->Update();

  return EXIT_SUCCESS;
}
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