magick -size 256x256 xc: +noise Random -virtual-pixel tile \
-motion-blur 0x20+135 -charcoal 1 -resize 50% pencil_tile.gif
magick 01.png -colorspace gray \
\( +clone -tile pencil_tile.gif -draw "color 0,0 reset" \
+clone +swap -channel rgb -compose bumpmap -composite \) \
-fx 'u*.2+v*.8' 01_sketch_bumpmap.gif
See if that works for you.
In Windows, then command would be
Code: Select all
magick -size 256x256 xc: +noise Random -virtual-pixel tile ^
-motion-blur 0x20+135 -charcoal 1 -resize 50% pencil_tile.gif
magick 01.png -colorspace gray ^
( +clone -tile pencil_tile.gif -draw "color 0,0 reset" ^
+clone +swap -channel rgb -compose bumpmap -composite ) ^
-fx 'u*.2+v*.8' 01_sketch_bumpmap.gif