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package require vtk
# Image pipeline
vtkPNGReader reader
reader SetFileName "$VTK_DATA_ROOT/Data/fullhead15.png"
vtkImageGaussianSmooth smooth
smooth SetDimensionality 2
smooth SetStandardDeviations 1 1
smooth SetInputConnection [reader GetOutputPort]
vtkImageAppendComponents imageAppend
imageAppend AddInputConnection [reader GetOutputPort]
imageAppend AddInputConnection [smooth GetOutputPort]
vtkImageClip clip
clip SetInputConnection [imageAppend GetOutputPort]
clip SetOutputWholeExtent 0 255 0 255 20 22
vtkImageAccumulate accum
accum SetInputConnection [clip GetOutputPort]
accum SetComponentExtent 0 255 0 255 0 0
accum SetComponentSpacing 12 12 0.0
vtkImageViewer viewer
viewer SetInputConnection [accum GetOutputPort]
viewer SetColorWindow 4
viewer SetColorLevel 2
viewer Render
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