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I'm finding a way to make the solid background of an image become as transparent as possible (with little halo). ImageMagick is a powerful tool however it's not easy to use. I tried one command

convert image.jpg \
-bordercolor white \
-border 1x1 \
-alpha set \
-channel RGBA \
-fuzz 20% \
-fill none \
-floodfill +0+0 white \
-shave 1x1 \
image.png

, which works kinda well. However, this requires me to know the exact color of the solid background while I need something to work with any background color. Anyone could help me with this? Th

axecopfire
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wade712vn
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1 Answers1

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As a heuristic, you could ask for the color of the pixels at the corners (http://studio.imagemagick.org/pipermail/magick-users/2005-March/015034.html) and then see which color is used the most. Not exactly fool-proof, though...

gfour
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