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#! /bin/bash
# This script tests: pnmtojpeg jpegtopnm
# Also requires: pnmpsnr
# TODO: threshold has been determined without much thought.
# Observed pnmpsnr output: 56.20 58.26 49.38
# A small margin has been added to the above numbers.
# Should print 3 1 1 1 three times
pnmtojpeg testimg.ppm | jpegtopnm | \
pnmpsnr -machine - testimg.ppm |\
awk '{printf("%3d %.2f %.2f %.2f\n", NF,
$1>55.0 ? 1000.00 : $1,
$2>57.0 ? 1000.00 : $2,
$3>48.0 ? 1000.00 : $3) }'
pnmtojpeg testimg.ppm -opt | jpegtopnm | \
pnmpsnr -machine - testimg.ppm |\
awk '{printf("%3d %.2f %.2f %.2f\n", NF,
$1>55.0 ? 1000.00 : $1,
$2>57.0 ? 1000.00 : $2,
$3>48.0 ? 1000.00 : $3) }'
pnmtojpeg testimg.ppm -progressive | jpegtopnm | \
pnmpsnr -machine - testimg.ppm |\
awk '{printf("%3d %.2f %.2f %.2f\n", NF,
$1>55.0 ? 1000.00 : $1,
$2>57.0 ? 1000.00 : $2,
$3>48.0 ? 1000.00 : $3) }'
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