#! /bin/bash
# This script tests: pgmtost4 st4topgm
# Also requires: pamchannel pamtopnm pamcut


# Input image of pgmtost4 must by 192x165

# Should produce 185194654 31695 which is the output of:
# pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 | \
#   pamtopnm | pamcut -pad 0 0 192 165 | cksum

pamchannel -infile=testimg.ppm -tupletype="GRAYSCALE" 0 | \
  pamtopnm | pamcut -pad 0 0 192 165 | \
  pgmtost4 | st4topgm - | cksum