[Insight-users] Blank output file

[Jessica Ford]

Hi,

I'm trying to write a simple program that read a file with ImageFileReader 
and output the file with ImageFileWriter. I want to see if it can read in 
"Dicom" file type.  I first run my program with "png" file type. When I run 
my program, I get a file with no image; it was all black. I don't know 
what's wrong. Here's my code:


#include "itkImage.h"
#include "itkCastImageFilter.h"
#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include <iostream>

int main(int argc, char *argv[] )
{
  typedef itk::Image< unsigned short, 2 > ImageType;
  typedef itk::ImageFileReader<ImageType> ReaderType;
  typedef itk::ImageFileWriter<ImageType> WriterType;

  if( argc < 2 )
    {
    std::cerr << "Missing Parameters " << std::endl;
    std::cerr << "Usage: " << argv[0];
    std::cerr << " inputFileImage  outputFileImage" << std::endl;
    return 1;
    }

  ImageType::Pointer image = ImageType::New();
  ReaderType::Pointer reader = ReaderType::New();
  WriterType::Pointer writer = WriterType::New();

  reader->SetFileName( argv[1] );
  writer->SetFileName( argv[2] );

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

  try
  {   writer->Update();
  }
  catch (itk::ExceptionObject & err)
  {
	  std::cout << "Exception object caught! " << std::endl;
	  std::cout << err << std::endl;
	  return -1;
  }

  return 0;
}





All help would be appreciated.

Jessica

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