[vtkusers] Assigning vtkImageAppendComponents output to vtkImageData array

[Luca Binotto]

Hello there,

I created, by means of vtkImageAppendComponents Filter, a three components 3D array:

     vtkImageAppendComponents *threeCompArray=vtkImageAppendComponents::New();
     threeCompArray->AddInput(imData); // imData points to a  vtkImageData 3D array
     threeCompArray->AddInput(gradMagn);// gradMagn points to a vtkImageData 3D array
     threeCompArray->AddInput(laplacian);// laplacian points to a vtkImageData 3D array

Now I need to prepare the input to vtkImageAccumulate:

    vtkImageData * histDataArray;
    histDataArray->SetDimensions(i_Dim,j_Dim,k_Dim);
    histDataArray = threeCompArray->GetOutput();

but compilation output gives a Segmentation fault
What is wrong ?
Thanks in advance

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