Legacy ImageMagick Discussions Archive

Hi, I would like to do something like this -

put together with

becomes

(using alpha channel)
How can I achieve this using a batch file with ImageMagick?
Thanks.

See Alpha Compositing
http://www.imagemagick.org/Usage/compose/

Specifically you want DstOut that is the destination image that is 'outside' the source image.

  convert http://i38.tinypic.com/2lnwyl4.png http://i33.tinypic.com/2d2av49.png \
                 -compose DstOut -composite  result.png

substitute your local copies of the input images, rather than the URL's you gave above.

Making transparency from overlay