hipstopgm - convert a HIPS file into a portable graymap
Reads a HIPS file as input. Produces a portable graymap as
If the HIPS file contains more than one frame in sequence,
hipstopgm will concatenate all the frames
HIPS is a format developed at the Human Information
Processing Laboratory, NYU.
Copyright (C) 1989 by Jef Poskanzer.