region - Parcellation of segmented image  

1997 Peter Philipsen, Ulrik Kjems, DSP/IMM, Technical University of Denmark; pap, uk@imm.dtu.dk
Usage :

   region <options> infile outfile

Utility for making a connected components pacellation of a segmented
volume. The input volume is scanned for 0/nonzero elements. All
nonzero elements are parcelled into regions of size > minsize and
< maxsize (approximately!).

Options:
 -i minsize     minimum region size (def. 100)
 -x maxsize     maximum region size (def. 500)
 -l message level   (def. std)
 -n n_itermax   maximum number of iterations (def. minsize)

Limitation: The current implementation requires the input volume
topologically to be one single connected component.
The program  will work, but may throw away unconnected regions!

region -h produces above information