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30 lines
508 B
30 lines
508 B
# Divergence measures rate of change of gradient.
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package require vtk
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# Image pipeline
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vtkPNGReader reader
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reader SetFileName "$VTK_DATA_ROOT/Data/fullhead15.png"
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vtkImageGradient gradient
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gradient SetDimensionality 2
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gradient SetInputConnection [reader GetOutputPort]
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vtkImageDivergence derivative
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derivative SetInputConnection [gradient GetOutputPort]
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vtkImageViewer viewer
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viewer SetInputConnection [derivative GetOutputPort]
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viewer SetColorWindow 1000
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viewer SetColorLevel 0
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viewer Render
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