Legacy ImageMagick Discussions Archive

Well, I don't know how to explain it, but I ran that transparent command on about 700 images, and then ran composite -compose copy_opacity mask.png image.png result.png They all came out with transparent backgrounds. Best guess is that running that command added an alpha channel to the images. Edit ...

None of my PNGs had an alpha channel, so I did:

convert -alpha transparent image.png image.png

This fixed it.

Updated to ImageMagick 6.7.8-2 2012-07-04 Q16 and still no change.

Those commands still don't work for me. Same results. Looks like there's a new binary out, I'll give that a try.

ImageMagick 6.7.7-2 2012-05-25 Q16 on Windows 7 x64.

Placing the mask first gives me the mask as the result.

I'm trying to apply a layer mask and remove the background from an image with transparency, and to the best of my understanding, this command should do it. composite -compose CopyOpactiy image.png mask.png result.png However, it just spits out the image, unchanged. http://www.dumpt.com/img/files ...