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January 13, 2019 21:11
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Convert images for Atari ST resolution
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# with dithering | |
convert input.jpg -resize 640x400\! -colorspace gray -colors 2 -normalize output.gif | |
# without dithering, strong separation | |
convert input.jpg -resize 640x400\! -colorspace gray +dither -colors 2 -normalize output.gif | |
# see http://www.multipole.org/discourse-server/viewtopic.php?t=34042 for background | |
# convert to low resultion for atari ST 16 colors / 4096 palette | |
convert rio_hill.jpg -colors 16 -depth 4 -resize 320x200\! rio.gif |
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