Legacy ImageMagick Discussions Archive

How can I user ImageMagick to take two images (a color "fill" image and a greyscale "key" image) and create a single targa image file output with alpha channel data from the "key" image?

Thanks!

t11s wrote:How can I user ImageMagick to take two images (a color "fill" image and a greyscale "key" image) and create a single targa image file output with alpha channel data from the "key" image?

Thanks!

convert fillimage keyimage -compose copy_opacity -composite result.tga

see http://www.imagemagick.org/Usage/compose/#copyopacity