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bre7/scanner-with-imagemagick.md

Last active November 17, 2023 23:04
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Simulate photo copier / fax / scanner effect using ImageMagick
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scanner-with-imagemagick.md

Solution 1

convert original.pdf -colorspace gray +clone -blur 0x1 +swap -compose divide -composite -linear-stretch 5%x0% -rotate 1.5 fake-scanned.pdf

Colorscan variation:

convert original.pdf +clone -blur 0x1 +swap -compose divide -composite -gamma 0.1 -linear-stretch 5%x0% -rotate 1.5 fake-scanned.pdf

Solution 2

convert $f -colorspace gray \( +clone +noise Random -threshold 99% -negate -blur 0x5 -level 97.5%,97.5% \) -evaluate-sequence min -blur 0xecho $RANDOM %2 +1 | bc` -level 25%,75% -rotate -0.echo $RANDOM %10 +1 | bc -sharpen 0x3.0 -blur 0xecho $RANDOM %2 +1 | bc -level 10%,90% -rotate -0.` echo $RANDOM %10 +1 | bc` -sharpen 0x1.2 -colorspace gray



Credits:

Solution taken from https://tex.stackexchange.com/questions/94523/simulate-a-scanned-paper

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