[Paraview] labeled image contouring

[Cagatay Bilgin]

I have a labeled image of a segmented tissue sample,
each nucleus with its unique label from 1 to N, saved
in mhd format. I've been using VTK to visualize my
tissue successfully using the following example
http://www.vtk.org/Wiki/VTK/Examples/Cxx/Medical/GenerateCubesFromLabels

I want to do is to the same in paraview,
but I cannot seem to find how to do so. I've
seen some suggestions about using threshold
and calculator filters, but I did not understand
how to perform this step by step. Is there a
document that you can suggest ?

Thank you,
Cagatay
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