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#!/bin/sh



rm -rf WHITECHAR BCHAR



# Convert red to white

mkdir -p WHITECHAR

for file in ufnr00[0123456]?.ppm; do convert -fuzz "25%" -fill white -opaque red "$file" "WHITECHAR/$file"; done



# Convert cyan to black

mkdir -p BCHAR

for file in WHITECHAR/*.ppm; do convert -fuzz "25%" -fill black -opaque "#00ffff" "$file" "BCHAR/`basename $file`"; done



# Append all images to a single row

convert BCHAR/*.ppm +append ROWS.ppm