    originalColor = vtkImageMapToWindowLevelColors()
    originalColor.SetWindow(colorWindow)
    originalColor.SetLevel(colorLevel)
    originalColor.SetInputConnection(reader.GetOutputPort())

    originalActor = vtkImageActor()
--
    laplacianColor = vtkImageMapToWindowLevelColors()
    laplacianColor.SetWindow(1000)
    laplacianColor.SetLevel(0)
    laplacianColor.SetInputConnection(laplacian.GetOutputPort())

    laplacianActor = vtkImageActor()
--
    enhancedColor = vtkImageMapToWindowLevelColors()
    enhancedColor.SetWindow(colorWindow)
    enhancedColor.SetLevel(colorLevel)
    enhancedColor.SetInputConnection(enhance.GetOutputPort())

    enhancedActor = vtkImageActor()
--
    idealColor = vtkImageMapToWindowLevelColors()
    idealColor.SetWindow(500)
    idealColor.SetLevel(0)
    idealColor.SetInputConnection(idealReal.GetOutputPort())

    idealActor = vtkImageActor()
--
    butterworthColor = vtkImageMapToWindowLevelColors()
    butterworthColor.SetWindow(500)
    butterworthColor.SetLevel(0)
    butterworthColor.SetInputConnection(butterworthReal.GetOutputPort())

    butterworthActor = vtkImageActor()
--
    constantPadColor = vtkImageMapToWindowLevelColors()
    constantPadColor.SetWindow(2000)
    constantPadColor.SetLevel(1000)
    constantPadColor.SetInputConnection(constantPad.GetOutputPort())

    constantPadActor = vtkImageActor()
--
    mirrorPadColor = vtkImageMapToWindowLevelColors()
    mirrorPadColor.SetWindow(2000)
    mirrorPadColor.SetLevel(1000)
    mirrorPadColor.SetInputConnection(mirrorPad.GetOutputPort())

    mirrorPadActor = vtkImageActor()
