[Insight-users] Simple raw to png test

[Karthik Krishnan]

Hi Todd,

I believe you forgot to add the line:
  io->SetDimensions(0,XSizeOfTheFile);
  io->SetDimensions(1,YSizeOfTheFile);

You need to specify that explicitly for RAW files unless you have a 
header, which I am assuming you don't.

Thanks
kk

Todd Gable wrote:

>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
>
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