[Insight-users] ITK 4.1 ImageIOFactory Could not create IO Object

[Sebastian Losch]

Hi Brad,

thanks for your response. I should have mentioned in my first post that i
am using Visual Studio 2010 on a Win7 32bit machine. I've read that this
problem can be solved by adding  include(${ITK_USE_FILE})  to the makefile.
But what is the corresponding way to do it in visual studio?

Thanks, Sebastian

2012/5/22 Bradley Lowekamp <blowekamp at mail.nih.gov>

> Most likely this is a problem with how you are using CMake for ITK and is
> not related to the code you have included here.
>
> There is an example of what a basic CMake project which uses ITK should
> like like  int ITK/Examples/Installation/CMakeLists.txt
>
>
> http://itk.org/gitweb?p=ITK.git;a=blob;f=Examples/Installation/CMakeLists.txt;h=5e1b9e7ae0a95430f5162e8ff435b98570c5ad6e;hb=HEAD
>
> Hopefully, this will get you started in the right direction to solve you
> problem.
>
> Brad
>
>
> On May 22, 2012, at 4:35 AM, Sebastian Losch wrote:
>
> Hi!
>
> I am having problems getting the ImageFileReader and ImageFileWriter to
> work. I just want to read a PNG File, apply a filter and write it back to
> the harddrive. I found out that there is a problem in 4.1 with the
> ImageIOFactory registration, so i register the PNGFactory manually. The
> .png file is in the same folder as the executable. Here is my Code:
>
> #include "itkImage.h"
> #include "itkImageFileReader.h"
> #include "itkImageFileWriter.h"
> #include "itkCannyEdgeDetectionImageFilter.h"
> #include "itkObjectFactoryBase.h"
> #include "itkPNGImageIOFactory.h"
>
> int main(int argc, char *argv[])
> {
> itk::ObjectFactoryBase::RegisterFactory(itk::PNGImageIOFactory::New());
>
>
> double variance = 2.0;
> double upperThreshold = 0.0;
>  double lowerThreshold = 0.0;
>
> typedef itk::Image<double, 2>  DoubleImageType;
>
> typedef itk::ImageFileReader<DoubleImageType> ReaderType;
> ReaderType::Pointer reader = ReaderType::New();
>  reader->SetFileName("input.png");
>
> typedef itk::CannyEdgeDetectionImageFilter <DoubleImageType,
> DoubleImageType>
>  CannyEdgeDetectionImageFilterType;
>
> CannyEdgeDetectionImageFilterType::Pointer cannyFilter =
> CannyEdgeDetectionImageFilterType::New();
>  cannyFilter->SetInput(reader->GetOutput());
> cannyFilter->SetVariance( variance );
>  cannyFilter->SetUpperThreshold( upperThreshold );
> cannyFilter->SetLowerThreshold( lowerThreshold );
>
> typedef itk::ImageFileWriter<DoubleImageType> WriterType;
> WriterType::Pointer writer = WriterType::New();
>
> writer->SetFileName("test.png");
> writer->SetInput(cannyFilter->GetOutput());
>
> try {
> writer->Update();
> } catch (itk::ExceptionObject &e) {
>  std::cerr << e << std::endl;
> }
>
> std::cout << "ENDE" << std::endl;
> }
>
> and this is the error:
>
> itk::ImageFileReaderException (0059E4A8)
> Location: "void __thiscall itk::ImageFileReader<class
> itk::Image<double,2>,class itk::DefaultConvertPixelTraits<double>
> >::GenerateOutputInformation(void)"
> File: c:\libs\itk\include\itk-4.1\itkimagefilereader.hxx
> Line: 143
> Description:  Could not create IO object for file input.png
>   Tried to create one of the following:
>     PNGImageIO
>   You probably failed to set a file suffix, or
>     set the suffix to an unsupported type.
>
>
> What am i doing wrong?
>
> Thanks in advance, Sebastian
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>
> ========================================================
>
> Bradley Lowekamp
>
> Medical Science and Computing for
>
> Office of High Performance Computing and Communications
>
> National Library of Medicine
>
> blowekamp at mail.nih.gov
>
>
>
>
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