[Insight-users] itkImageToVTKImageFilter Pipeline Reuse Crash

[goodsit2]

I've searched through previous messages on both the itk and vtk mailing list,
but found only one post on this topic with no response. Hopefully this time
someone will have a solution! 

Concisely, my pipeline is as follows: itk::ImageSeriesReader ->
itkImageToVTKImageFilter -> vtkImageViewer2 -> QVTKWidget.  A little more
elaborately, the code goes like this: 

Initially when entering the GUI, the pipeline is established like so: 

        //reader is an itkImageSeriesReader with specified InputImageType. 
        //currImage is an itkImage which has the specified InputImageType. 
        // iToVconnector is the itkImageToVTKImageFilter pointer. 
        // imageViewer is the vtkImageViewer2 pointer. 
        // myWindow is the QVTKWidget pointer. 
        reader->SetFileName("Black Screen.dcm"); 
        reader->Update(); 
        currImage = reader->GetOutput(); 
        currImage->DisconnectPipeline(); 

        // Connect reader and filter. 
        iToVconnector->SetInput(currImage); 

        // Create and connect imageViewer to filter. 
        imageViewer = vtkImageViewer2::New(); 
        imageViewer->SetInput(iToVconnector->GetOutput()); 

        // Connect the widget to the imageViewer. 
        myWindow->SetRenderWindow(imageViewer->GetRenderWindow()); 

As you can see, I do disconnect the reader pipeline, but currImage does not
go out of scope since it is a member variable. Later, I try to introduce a
new input into the iToVconnector and that is where it crashes. Here is that
code: 

    // newCurrImage is an itkImage which has been disconnected from its
pipeline. 
    iToVconnector->SetInput(newCurrImage);   //CRASHES
HERE!!!!!!!!!!!!!!!!!!!!!!!! 
    iToVconnector->Update(); 
    imageViewer->UpdateDisplayExtent(); 
    imageViewer->Render(); 
    imageViewer->GetRenderer()->ResetCamera(); 
    myWindow->update(); 
    currImage = newCurrImage; 


I'm thinking that it crashes because iToVconnector is not a disconnected
pipeline, how can I disconnect it and be able to introduce new items to the
my pre-existing pipeline? 

Here is the similar post from a long while back:
http://vtk.1045678.n5.nabble.com/Crash-in-vtkImageViewer2-when-Input-is-changed-tt1250027.html

Thanks for your time. 

Bests, 

Jeremy



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