[Insight-users] Working with RescaleIntensityImageFilter in XCode

[cagatay bilgin]

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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