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How to composite image with a mask

https://imagemagick.org/discourse-server/viewtopic.php?t=35418

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How to composite image with a mask

Posted: 2019-01-29T23:24:04-07:00
by tczf1128
mask image: Image

base image: Image

I want to make the base image into a circle with this mask image

version: IM-7

Re: How to composite image with a mask

Posted: 2019-01-30T00:22:05-07:00
by fmw42
You did not say which OS you are using nor the exact IM version. Assuming Unix (Linux or Mac OSX), try either

Code: Select all

magick base.jpg -set option:dims "%wx%h" \( mask.png -alpha extract -resize 200% -size "%[dims]" xc:white  +swap -gravity center -geometry -20-20 -alpha off -compose copy_opacity -composite \)  +geometry -compose over -composite result1.png

magick base.jpg -set option:dims "%wx%h" \( mask.png -alpha extract -resize 200% -size "%[dims]" xc:white  +swap -gravity center -geometry -20-20 -alpha off -compose copy_opacity -composite \)  +geometry -compose over -composite -trim +repage result2.png
For Windows, remove all the \

Re: How to composite image with a mask

Posted: 2019-01-31T00:58:01-07:00
by tczf1128
thanks!
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