[ITK-users] [ITK-dev] Streamed Read/Write Truncating Data

[Maryana]

Hi,

I use Linux Mint 64bits, GCC 4.8, Cmake 2.8. I'm compiling to this
platform.

Thank you!

On Mon, Sep 21, 2015 at 11:55 AM, Bradley Lowekamp <blowekamp at mail.nih.gov>
wrote:

> Hello Maryana,
>
> What compiler, platform and architecture are you compiling for?
>
> Brad
>
> On Sep 21, 2015, at 2:54 PM, Maryana <nexnaru at gmail.com> wrote:
>
> >
> > Hi ITK Users/Devs,
> >
> > I'm new to ITK and I need to write a small program to convert Nifti
> images to MetaIO. However, I need to use the streamed reader/writer because
> my image volumes can have several gigabytes. I was doing some tests with
> the following code but I've realized that whenever I use the stream I end
> up with a truncated volume. I'm using ITK 4.8. I'm sure my volume is of
> unsigned char type. Also, when I comment out the
> writer->SetNumberOfStreamDivisions(20);  line I works fine. Does anyone
> knows what is wrong?
> >
> > Thank you!
> >
> > #include <cstdlib>
> > #include <string>
> > #include <iostream>
> >
> > #include "itkImage.h"
> > #include "itkImageFileReader.h"
> > #include "itkImageFileWriter.h"
> > #include "itkImageRegionIterator.h"
> > #include "itkNiftiImageIO.h"
> > #include "itkMetaImageIO.h"
> >
> >
> > int main(int argc, char const *argv[]){
> >
> >   std::string fileIn = "brain_8bit.nii";
> >   std::string fileOut = "mri2_stream.mha";
> >
> >   typedef itk::Image<unsigned char,3> Image3D;
> >
> >  //Reader
> >   typedef itk::ImageFileReader<Image3D> ReaderType;
> >   ReaderType::Pointer reader = ReaderType::New();
> >   reader->SetFileName(fileIn);
> >
> >  //Writer
> >   typedef itk::ImageFileWriter<Image3D> WriterType;
> >   WriterType::Pointer writer = WriterType::New();
> >   writer->SetFileName(fileOut);
> >   writer->SetNumberOfStreamDivisions(20);
> >   writer->SetInput(reader->GetOutput());
> >
> >
> >   std::cout << "Input: " << fileIn << std::endl;
> >   std::cout << "Output: " << fileOut << std::endl;
> >
> >   std::cout << "Writing..." << std::endl;
> >   try
> >     {
> >       writer->Update();
> >     }
> >   catch( itk::ExceptionObject & err )
> >     {
> >       std::cerr << "ExceptionObject caught !" << std::endl;
> >       std::cerr << err << std::endl;
> >       return EXIT_FAILURE;
> >     }
> >   std::cout << "Finished." << std::endl;
> >
> >
> >   return EXIT_SUCCESS;
> > }
> >
> >
> >
> >
> >
> > --
> > "Tudo no mundo começou com um sim. Uma molécula disse sim a outra
> molécula e nasceu a vida" - Clarice Lispector
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>


-- 
"Tudo no mundo começou com um sim. Uma molécula disse sim a outra molécula
e nasceu a vida" - Clarice Lispector
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