Merge three images at different positions on a transparent canvas

[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:

[snibgo]

You might use "-layers" with a page setting, or "-composite" with a geometry.

[fmw42]

see http://www.imagemagick.org/Usage/layers/

[276QeqxYSCrFENSx]

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]

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]

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