[vtkusers] vtkImageMathematics (Add operation)

[David Doria]

On Wed, Aug 15, 2012 at 6:37 PM, matheus_viana <vianamp at gmail.com> wrote:
> Hi Folks,
>
> I'm trying to sum two ImageDatas, but I'm getting a blank image as result.
> This is my code:
>
>         vtkImageCast *cast = vtkImageCast::New();
>         cast -> SetInput(ImageData);
>         cast -> SetOutputScalarTypeToDouble();
>         cast -> Update();
>
>         vtkImageGaussianSmooth *Gauss = vtkImageGaussianSmooth::New();
>         Gauss -> ReleaseDataFlagOff();
>         Gauss -> SetInput(cast -> GetOutput());
>         Gauss -> SetDimensionality(3);
>         Gauss -> SetRadiusFactors(1,1,1);
>         Gauss -> SetStandardDeviations(1,1,1);
>         Gauss -> Update();
>
>         vtkImageVariance3D *Variance  = vtkImageVariance3D::New();
>         Variance -> SetInput(cast->GetOutput());
>         Variance -> SetKernelSize(3,3,3);
>         Variance -> Update();
>
>         vtkImageMathematics *mat = vtkImageMathematics::New();
>         mat -> SetOperationToAdd();
>         mat -> SetInput1(Gauss->GetOutput());
>         mat -> SetInput2(Variance->GetOutput());
>         mat -> Update();
>
> You guys have any idea?

Please make a self-contained, compilable example of the problem. You
can start with this as a shell:

http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageMathematics

David