old_contents: #!/usr/bin/env python
  
  import vtk
  
  def main():
      colors = vtk.vtkNamedColors()
      # Create an image
      source = vtk.vtkImageSinusoidSource()
      source.Update()
      
      normalizeFilter = vtk.vtkImageNormalize()
      
      normalizeFilter.SetInputConnection(source.GetOutputPort())
      normalizeFilter.Update()
      
      inputCastFilter = vtk.vtkImageCast()
      inputCastFilter.SetInputConnection(source.GetOutputPort())
      inputCastFilter.SetOutputScalarTypeToUnsignedChar()
      inputCastFilter.Update()
      
      normalizeCastFilter = vtk.vtkImageCast()
      normalizeCastFilter.SetInputConnection(normalizeFilter.GetOutputPort())
      normalizeCastFilter.SetOutputScalarTypeToUnsignedChar()
      normalizeCastFilter.Update()
      
      # Create actors
      inputActor = vtk.vtkImageActor()
      inputActor.GetMapper().SetInputConnection(inputCastFilter.GetOutputPort())
      
      normalizedActor = vtk.vtkImageActor()
      normalizedActor.GetMapper().SetInputConnection(normalizeCastFilter.GetOutputPort())
      
      # There will be one render window
      renderWindow = vtk.vtkRenderWindow()
      renderWindow.SetSize(600, 300)
      
      # And one interactor
      interactor = vtk.vtkRenderWindowInteractor()
      interactor.SetRenderWindow(renderWindow)
      
      # Define viewport ranges
      # (xmin, ymin, xmax, ymax)
      leftViewport = [0.0, 0.0, 0.5, 1.0]
      rightViewport = [0.5, 0.0, 1.0, 1.0]
      
      # Setup both renderers
      leftRenderer = vtk.vtkRenderer()
      renderWindow.AddRenderer(leftRenderer)
      leftRenderer.SetViewport(leftViewport)
      leftRenderer.SetBackground(colors.GetColor3d("lemon_chiffon"))
      
      rightRenderer = vtk.vtkRenderer()
      renderWindow.AddRenderer(rightRenderer)
      rightRenderer.SetViewport(rightViewport)
      rightRenderer.SetBackground(colors.GetColor3d("gray"))
      
      leftRenderer.AddActor(inputActor)
      rightRenderer.AddActor(normalizedActor)
      
      leftRenderer.ResetCamera()
      
      rightRenderer.ResetCamera()
      
      renderWindow.Render()
  	interactor.Start()
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  
  import vtk
  
  def main():
      colors = vtk.vtkNamedColors()
      colors.SetColor("right_bkg", [0.4, 0.5, 0.6, 1.0])
      colors.SetColor("left_bkg", [0.6, 0.5, 0.4, 1.0])
      
  	# Create an image
      source = vtk.vtkImageSinusoidSource()
      source.Update()
      
      normalizeFilter = vtk.vtkImageNormalize()
      
      normalizeFilter.SetInputConnection(source.GetOutputPort())
      normalizeFilter.Update()
      
      inputCastFilter = vtk.vtkImageCast()
      inputCastFilter.SetInputConnection(source.GetOutputPort())
      inputCastFilter.SetOutputScalarTypeToUnsignedChar()
      inputCastFilter.Update()
      
      normalizeCastFilter = vtk.vtkImageCast()
      normalizeCastFilter.SetInputConnection(normalizeFilter.GetOutputPort())
      normalizeCastFilter.SetOutputScalarTypeToUnsignedChar()
      normalizeCastFilter.Update()
      
      # Create actors
      inputActor = vtk.vtkImageActor()
      inputActor.GetMapper().SetInputConnection(inputCastFilter.GetOutputPort())
      
      normalizedActor = vtk.vtkImageActor()
      normalizedActor.GetMapper().SetInputConnection(normalizeCastFilter.GetOutputPort())
      
      # There will be one render window
      renderWindow = vtk.vtkRenderWindow()
      renderWindow.SetSize(600, 300)
      
      # And one interactor
      interactor = vtk.vtkRenderWindowInteractor()
      interactor.SetRenderWindow(renderWindow)
      
      # Define viewport ranges
      # (xmin, ymin, xmax, ymax)
      leftViewport = [0.0, 0.0, 0.5, 1.0]
      rightViewport = [0.5, 0.0, 1.0, 1.0]
      
      # Setup both renderers
      leftRenderer = vtk.vtkRenderer()
      renderWindow.AddRenderer(leftRenderer)
      leftRenderer.SetViewport(leftViewport)
      leftRenderer.SetBackground(colors.GetColor3d("left_bkg"))
      
      rightRenderer = vtk.vtkRenderer()
      renderWindow.AddRenderer(rightRenderer)
      rightRenderer.SetViewport(rightViewport)
      rightRenderer.SetBackground(colors.GetColor3d("right_bkg"))
      
      leftRenderer.AddActor(inputActor)
      rightRenderer.AddActor(normalizedActor)
      
      leftRenderer.ResetCamera()
      
      rightRenderer.ResetCamera()
      
      renderWindow.Render()
      interactor.Start()
  
  if __name__ == '__main__':
      main()
  
subject: Update ImageNormalize.py