quotepilgrim · October 14, 2024 14:24
diff --git a/embed-text.sh b/embed-text.sh
 #!/bin/sh

 set -e

 infile=$1
 outfile="${infile%.*}.png"
 width=$(($2 - 2))
 bytes=$((width * width * 3))

 cat "$infile" /dev/zero | head -c $bytes |
 magick -depth 8 -size "$width"x"$width" rgb:- -separate +channel\
       -swap 0,2 -combine -bordercolor Black -border 1x1 "$outfile"
diff --git a/extract-text.sh b/extract-text.sh
 #!/bin/sh

 set -e

 infile=$1
 outfile="${infile%.*}.txt"

 magick "$infile" -separate +channel -swap 0,2 -combine rgb:- |
 tr -d '\000' >"$outfile"
	#!/bin/sh

	set -e

	infile=$1
	outfile="${infile%.*}.png"
	width=$(($2 - 2))
	bytes=$((width * width * 3))

	cat "$infile" /dev/zero \| head -c $bytes \|
	magick -depth 8 -size "$width"x"$width" rgb:- -separate +channel\
	-swap 0,2 -combine -bordercolor Black -border 1x1 "$outfile"
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