[Insight-users] Problem with GetPixel

[edoardo.belletti at alice.it]

Hi
I have a problem with this program, when I run it the output is that:
 Segmentation fault

The problem is with GetPixel I suppose.

#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif

#ifdef __BORLANDC__
#define ITK_LEAN_AND_MEAN
#endif


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


int main( int argc, char ** argv )
{
	// Verify the number of parameters in the command line
	if( argc < 3 )
	{
		std::cerr << "Usage: " << std::endl;
		std::cerr << argv[0] << " inputImageFile  outputImageFile " << std::endl;
		return EXIT_FAILURE;
	}

	typedef unsigned char PixelType;
	const   unsigned int Dimension = 2;
	typedef itk::Image< PixelType, Dimension >    ImageType;
  
	typedef itk::ImageFileReader< ImageType >  ReaderType;
	typedef itk::ImageFileWriter< ImageType >  WriterType;
  
	ReaderType::Pointer reader = ReaderType::New();
	WriterType::Pointer writer = WriterType::New();
  
	const char * inputFilename  = argv[1];
	const char * outputFilename = argv[2];

	reader->SetFileName( inputFilename  );
	writer->SetFileName( outputFilename );

	ImageType::Pointer image = reader->GetOutput();
	
	const ImageType::PointType& orgn = image->GetOrigin();
	std::cout << "Origin = ";
	std::cout << orgn[0] << ", " << orgn[1] << std::endl;

	ImageType::IndexType pixelIndex;
	
	pixelIndex[0] = 27; // x position
	pixelIndex[1] = 29; // y position
	std::cout << "x position: " << pixelIndex[0] << "\ny position: " << pixelIndex[1] << std::endl;
	
	
	ImageType::PixelType pixelValue = image->GetPixel(pixelIndex);
	
	std::cout << "valore pixel: " << pixelValue << std::endl;

	image->SetPixel( pixelIndex, pixelValue+1 );
	
	
	writer->SetInput( image );
 
	try 
	{ 
		writer->Update(); 
	} 
	catch( itk::ExceptionObject & err ) 
	{ 
		std::cerr << "ExceptionObject caught !" << std::endl; 
		std::cerr << err << std::endl; 
		return EXIT_FAILURE;
	} 

	return EXIT_SUCCESS;
}



Thanks
Edoardo
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