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#! /bin/bash
# This script tests: pamchannel
# Also requires: pamtopnm
# Extract planes one by one.
# Convert output to pgm to make it identical to ppmtorgb3 output.
# $ ppmtorgb3 testimg.ppm ; cksum testimg.{red,grn,blu}
#
# 1571496937 33838 testimg.red
# 394856971 33838 testimg.grn
# 3164158573 33838 testimg.blu
# Test 1. red channel
# Should produce 1571496937 33838
${PBM_TESTPREFIX}pamchannel -infile testimg.ppm 0 | \
${PBM_BINPREFIX}pamtopnm --assume | cksum
# Test 2. green channel
# Should produce 394856971 33838
${PBM_TESTPREFIX}pamchannel -infile testimg.ppm 1 | \
${PBM_BINPREFIX}pamtopnm --assume | cksum
# Test 3. blue channel
# Should produce 3164158573 33838
${PBM_TESTPREFIX}pamchannel -infile testimg.ppm 2 | \
${PBM_BINPREFIX}pamtopnm --assume | cksum
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