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| # Best one | |
| convert -density 200 INPUT.pdf -rotate 0.3 +noise Multiplicative -format pdf -quality 85 -compress JPEG -colorspace gray OUTPUT.pdf | |
| # A few other options | |
| convert -density 130 input.pdf -rotate 0.2 -attenuate 0.25 +noise Laplacian -colorspace Gray output.pdf | |
| convert -density 150 input.pdf -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" -attenuate 0.4 +noise Laplacian -sharpen 0x1.0 -colorspace Gray output.pdf | |
| convert -density 150 input.pdf -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" -attenuate 0.4 +noise Gaussian -sharpen 0x1.0 -colorspace Gray output.pdf | |
| convert -density 150 input.pdf -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" -attenuate 0.4 +noise Gaussian -attenuate 0.03 +noise Laplacian -sharpen 0x1.0 -colorspace Gray output.pdf | |
| convert -density 150 input.pdf -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" -attenuate 0.4 +noise Multiplicative -attenuate 0.03 +noise Laplacian -colorspace Gray output.pdf | |
| convert -density 150 input.pdf -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" -attenuate 0.4 +noise Multiplicative -attenuate 0.03 +noise Laplacian -sharpen 0x1.0 -colorspace Gray output.pdf | |
| convert -density 130 input.pdf -rotate 0.2 -attenuate 0.2 +noise Laplacian -colorspace Gray output.pdf |
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