#!/bin/bash

bild="$1"
ergebnis="$2"

convert -gravity South -pointsize 15\
   "$bild" -resize 512x512 -write mpr:orig \
       -background white -splice 0x18 \
       -draw "text 0,0 'Original'" \
   \( mpr:orig -channel red -separate \
       -background red -splice 0x18 \
       -draw "text 0,0 'Roter Kanal'" \) \
   +append \
       \( \
          \( mpr:orig -channel green -separate  \
               -background green -splice 0x18 \
               -draw "text 0,0 'Grüner Kanal'" \) \
          \( mpr:orig -channel blue  -separate  \
               -background blue -splice 0x18 \
               -draw "text 0,0 'Blauer Kanal'" \) \
          +append \) \
   -append \
 "$ergebnis"