[Insight-users] exception error when load image

[Luis Ibanez]

Hi John,

If you are reusing a pipeline you should call
the method

           UpdateLargestPossibleRegion()

in the last filter of the pipeline,
instead of just using:

                           Update()

Otherwise, the pipeline expects that the new
input image has the same size of the previous
input image.


     Luis


----------------------------------------------------
On Wed, Jun 1, 2011 at 9:05 AM, john smith <mkitkinsightuser at gmail.com> wrote:
> Hello,
>
> I have declared a reader as global variable
>
>   typedef unsigned char        InputPixelType;
>   typedef unsigned char        OutputPixelType;
>
>   typedef itk::Image< InputPixelType,  3 >    InputImageType;
>   typedef itk::Image< OutputPixelType, 2 >    OutputImageType;
>
>   typedef itk::ImageFileReader< InputImageType  >  ReaderType;
>   typedef itk::ImageFileWriter< OutputImageType >  WriterType;
>   ReaderType::Pointer reader = ReaderType::New();
>
> I am using Qt to open and display images. So I have created a function
>
> void MainWindow::push_button_File()
> {
>
>    fileName = QFileDialog::getOpenFileName(this,
>                                    tr("Open File"), QDir::currentPath());
>
>       reader->SetFileName( fileName.toStdString()  );
>      reader->Update();
> }
>
> My problem is that when I load my first image I do not have any problem. But
> when I reload my reader with an other image I get this exception error:
>
> Unhandled exception at 0x764ab727 in mainwindow.exe: Microsoft C++
> exception: itk::InvalidRequestedRegionError at memory location 0x0095c0d8..
>
> Do you know why is this happening?
>
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