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package require vtk
# Image pipeline
vtkImageReader reader
reader ReleaseDataFlagOff
reader SetDataByteOrderToLittleEndian
reader SetDataExtent 0 63 0 63 1 93
reader SetDataSpacing 3.2 3.2 1.5
reader SetFilePrefix "$VTK_DATA_ROOT/Data/headsq/quarter"
reader SetDataMask 0x7fff
vtkImageVariance3D var
var SetInputConnection [reader GetOutputPort]
var SetKernelSize 3 3 1
vtkImageViewer viewer
viewer SetInputConnection [var GetOutputPort]
viewer SetZSlice 22
viewer SetColorWindow 3000
viewer SetColorLevel 1000
#viewer DebugOn
viewer Render
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