usgInClone->ShallowCopy(usgIn);
vtkSmartPointer<vtkShrinkFilter> shrink(vtkSmartPointer<vtkShrinkFilter>::New());
shrink->SetInputData(usgInClone);
usgInClone->ShallowCopy(usgIn);
vtkSmartPointer<vtkShrinkFilter> shrink(vtkSmartPointer<vtkShrinkFilter>::New());
shrink->SetInputData(usgInClone);