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#! /bin/bash
# This script tests: pammixmulti
# Also requires: pgmnoise pnminvert pamsumm
tmpdir=${tmpdir:-/tmp}
# Test 1. Should print 1926073387 101484 six times
echo Test 1.
pammixmulti testimg.ppm | cksum
pammixmulti testimg.ppm testimg.ppm | cksum
pammixmulti testimg.ppm testimg.ppm testimg.ppm | cksum
pammixmulti -blend=average testimg.ppm testimg.ppm | cksum
pammixmulti -blend=average testimg.ppm testimg.ppm testimg.ppm | cksum
pammixmulti -blend=random -randomseed=1 \
testimg.ppm testimg.ppm testimg.ppm | cksum
# Test 2. Should print 1926073387 101484 three times
echo Test 2.
mask_pgm=${tmpdir}/mask.pgm
pgmnoise -maxval=2 -randomseed=1 227 149 > ${mask_pgm}
for sd in 0.5 1.2 3.0
do
pammixmulti -blend=mask -maskfile=${mask_pgm} -stdev=${sd} \
testimg.ppm testimg.ppm testimg.ppm | cksum
done
rm ${mask_pgm}
# Test 3. Should print
echo Test 3.
noise_pgm=${tmpdir}/noise.pgm
pgmnoise --randomseed=1 227 149 > ${noise_pgm}
pammixmulti -blend=mask -maskfile=${noise_pgm} \
testimg.ppm testimg.ppm | cksum
pammixmulti -blend=mask -maskfile=${noise_pgm} \
testimg.ppm testimg.ppm testimg.ppm | cksum
pammixmulti -blend=mask -maskfile=${noise_pgm} \
testimg.ppm testimg.ppm testimg.ppm testimg.ppm | cksum
rm ${noise_pgm}
# Test 4.
# Mix image with its own inverse.
# Output should be a monotone gray sheet.
# Should print 127 six times
echo Test 4.
invert_ppm=${tmpdir}/invert.ppm
monotone_ppm=${tmpdir}/monotone.ppm
pnminvert testimg.ppm > ${invert_ppm}
pammixmulti -blend=average testimg.ppm ${invert_ppm} | tee ${monotone_ppm} | \
pamsumm -brief -max &&
pamsumm -brief -min ${monotone_ppm}
rm ${monotone_ppm}
pammixmulti -blend=average \
testimg.ppm ${invert_ppm} testimg.ppm ${invert_ppm} | \
tee ${monotone_ppm} | \
pamsumm -brief -max &&
pamsumm -brief -min ${monotone_ppm}
rm ${monotone_ppm}
pammixmulti -blend=average \
testimg.ppm testimg.ppm ${invert_ppm} ${invert_ppm} | \
tee ${monotone_ppm} | \
pamsumm -brief -max &&
pamsumm -brief -min ${monotone_ppm}
rm ${monotone_ppm} ${invert_ppm}
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