[Insight-users] Simple raw to png test

[Todd Gable]

I simply want to load one of our raw CT images, then save it to a .png (to verify it loaded ok). When I run it I get the following error:

itk::ExceptionObject (00FCF150)
Location: "Unknown"
File: \Dev\InsightToolkit-1.8.1\InsightToolkit-1.8.1\Code\Io\itkPNGImageIO.cxx
Line: 395
Description: itk::ERROR: PNGImageIO(0022C698): PNG Writer can only write 2-dime
sional images

Can anyone give me a pointer? Thanks.


/******************* Start code ************************/


#include "itkImageFileReader.h"
#include "itkImageFileWriter.h"
#include "itkRawImageIO.h"

#include "itkImage.h"
#include <string>

using namespace std;


int main( int argc, char ** argv )
{

  	typedef unsigned short      PixelType;
  	const   unsigned int        Dimension = 2;
  
	typedef itk::Image< PixelType, Dimension >   ImageType;
	typedef itk::RawImageIO<PixelType,Dimension> IOType;

	IOType::Pointer io = IOType::New();
  	io->SetFileTypeToBinary();
	io->SetFileDimensionality(Dimension);
	io->SetByteOrderToBigEndian();


	typedef itk::ImageFileReader<ImageType>  ReaderType;
	typedef itk::ImageFileWriter<ImageType>  WriterType;

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

	string inputFilename = "336.raw";
	string outputFilename = "336.png";
  
	cout << "Reading " << inputFilename << endl;
	reader->SetFileName( inputFilename.c_str()  );
  	 
	reader->SetImageIO( io );
  	writer->SetFileName( outputFilename.c_str() );

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

  	cout << "Writing " << outputFilename << endl;

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

  	return 0;
}

/******************* End code ************************/

Todd Gable