VTK高斯平滑

    vtkSmartPointer<vtkImageGaussianSmooth> gaussianSmoothFilter = vtkSmartPointer<vtkImageGaussianSmooth>::New();
	gaussianSmoothFilter->SetInputData(reader->GetOutput());
	gaussianSmoothFilter->SetDimensionality(3);
	gaussianSmoothFilter->SetRadiusFactor(3);
	gaussianSmoothFilter->SetStandardDeviation(0.6);
	gaussianSmoothFilter->Update();