[Insight-users] Working with RescaleIntensityImageFilter in XCode

[Bill Lorensen]

This should give you more info:

  try
    {
    writer->Update();
    }
  catch( itk::ExceptionObject & exc )
    {
    std::cout << "Caught unexpected exception: "
              << exc;
    return EXIT_FAILURE;
    }


On Tue, Nov 1, 2011 at 1:53 AM, cagatay bilgin <bilgincc at gmail.com> wrote:

> Hello Rupinder,
>
> Could it be that your CastFilter's output is of OutputImageType
> and your Writer's input is of InputImageType and you connect
> the cast filter's output to the writer filter ? Templating the
> ImageFileWriter
> over the OutputImageType might solve your problem. That is instead of
>
> typedef  itk::ImageFileWriter< InputImageType >  WriterType;
> try
> typedef  itk::ImageFileWriter< OutputImageType >  WriterType;
>
> PS. You can attach the error to the email for a better diagnosis.
>
> Regards,
> Cagatay
>
> On Mon, Oct 31, 2011 at 10:03 PM, Rupinder Singh <
> rupinder.singh123 at yahoo.com> wrote:
>
>> I'm having difficulty understanding why the following function throws an
>> exception at 'writer->Update()' whenever it's called.
>>
>> const     unsigned int    Dimension = 2;
>> typedef   unsigned char   InputPixelType;
>> typedef   unsigned char   OutputPixelType;
>>
>> typedef itk::Image< InputPixelType,    Dimension >   InputImageType;
>> typedef itk::Image< OutputPixelType,   Dimension >   OutputImageType;
>>
>> void saveITKImage(InputImageType *image)
>> {
>>    typedef  itk::RescaleIntensityImageFilter< InputImageType,
>> OutputImageType > CastFilterType;
>>    typedef  itk::ImageFileWriter< InputImageType >
>>
>> WriterType;
>>
>>    WriterType::Pointer      writer = WriterType::New();
>>    CastFilterType::Pointer  caster = CastFilterType::New();
>>
>>    writer->SetFileName("/Users/usr/Desktop/test.jpg");
>>    caster->SetOutputMinimum(   0 );
>>    caster->SetOutputMaximum( 255 );
>>
>>    // Define Pipeline
>>    caster->SetInput( image );
>>    writer->SetInput( caster->GetOutput() );
>>    writer->Update();
>>
>>    return;
>> }
>>
>> I know I'm doing something right because the following bit of code works
>> perfectly when called.
>>
>> void saveITKImage(InputImageType *image)
>> {
>>    typedef  itk::ImageFileWriter< InputImageType > WriterType;
>>
>>    WriterType::Pointer  writer = WriterType::New();
>>
>>    writer->SetFileName("/Users/usr/Desktop/test.jpg");
>>
>>    // Define Pipeline
>>    writer->SetInput( image);
>>    writer->Update();
>>
>>    return;
>> }
>>
>> Does anyone know what I'm doing wrong?
>>
>> Thank you in advance for your help!
>>
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>
> _____________________________________
> Powered by www.kitware.com
>
> Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html
>
> Kitware offers ITK Training Courses, for more information visit:
> http://www.kitware.com/products/protraining.html
>
> Please keep messages on-topic and check the ITK FAQ at:
> http://www.itk.org/Wiki/ITK_FAQ
>
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