Merge three images at different positions on a transparent canvas

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276QeqxYSCrFENSx
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Merge three images at different positions on a transparent canvas

Post by 276QeqxYSCrFENSx »

I have three PNGs that I want merged at different positions on a transparent canvas with a fixed size.

Let's say the canvas is 200x200, the images all about 50x50 and I want the first at 25x 125y, the second at 75x 125y and the third at 125x 125y. How would I go about this?

Example:

Image

snibgo
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Re: Merge three images at different positions on a transparent canvas

Post by snibgo »

You might use "-layers" with a page setting, or "-composite" with a geometry.
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fmw42
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Re: Merge three images at different positions on a transparent canvas

Post by fmw42 »


276QeqxYSCrFENSx
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Re: Merge three images at different positions on a transparent canvas

Post by 276QeqxYSCrFENSx »

snibgo wrote:You might use "-layers" with a page setting, or "-composite" with a geometry.
I couldn't get the canvas to be transparent. It always turns out black.

Code: Select all

convert --size200x200 xc:none output.png -composite 1.png -composite 2.png -composite 3.png

246246
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Re: Merge three images at different positions on a transparent canvas

Post by 246246 »

276QeqxYSCrFENSx wrote: I couldn't get the canvas to be transparent. It always turns out black.
You will need -background none. And output file should be placed last of the command sequence.

Code: Select all

convert xc:none[200x200\!] -background none \( rose: -resize 50x50\! -geometry +25+125 \) -compose over -composite \( rose: -resize 50x50\! -geometry +75+125 \) -compose over -composite \( rose: -resize 50x50\! -geometry +125+125 \) -compose over -composite show:
or

Code: Select all

convert xc:none[200x200\!] -background none \( rose: -resize 50x50\! -repage +25+125 \) \( rose: -resize 50x50\! -repage +75+125 \) \( rose: -resize 50x50\! -repage +125+125 \) -layers merge show:

276QeqxYSCrFENSx
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Re: Merge three images at different positions on a transparent canvas

Post by 276QeqxYSCrFENSx »

Thanks 246246, the first command is what I was looking for. It works with "gravity" and solves the problem.

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