A set of tools to perform operations on nrrd files
These operations can be easily manipulated to work on any file representing a structure with a 3-D array.
Credit and dependencies:
PyCollada - https://github.com/pycollada/pycollada
PyNrrd - https://github.com/mhe/pynrrd
PyMCubes - https://github.com/pmneila/PyMCubes