Legacy ImageMagick Discussions Archive

I've been using this script for a while now, its fantastic! Thanks for it! I only have a little question, what is that how to resample the given images to a smaller resolution, _after_ the alpha processing has taken effect? Is this the correct line? convert.exe x_black0001.png x_white0001.png -alpha...

Going back to the original problem... You mentioned animations but your example uses PNG images whcih are by defintion single images, not animations. Are these images ment to be individual frames? If you animations are small enough to be handled completely in memory you can flatten the multiple ani...

convert a.png \( b.png -opacity 50 \) c.png d.png -background transparent -flatten out.png is there such a command? 3. Are you sure that "set" operation is presaving the alpha information? For me it seems from the documentation that it sets a solid color (or grey value) for all the layer,...

To change a layer's opacity convert a.png[3] -channel a -evaluate set 50% +channel result_layer3.png that will make the 4th layer of a.png 50% transparent. (Layers in IM start with 0, nominally) Thanks, the first example is clear, but this one confuses me. 1. What is a.png[3]? Is it an image sequen...

I would like to -flatten multiple animations into a single animation, using image sequences. I've written a code which does the merging, however at the moment it is only doing basic operations. At the moment this is all the code (of course with the specific image names from the sequence): convert a....

I would like to run a long long command for merging 200 images into a single file. The command I am using at the moment is: convert a.png b.png c.png d.png .... .... .... -background transparent -flatten out.png The problem I am encountering now is that the command cannot be more than 8192 character...

Thank you all, this script works wonderfully! My only problem so far is that when there is no object on the image (it happens in an animation), then the result PNG image (100% transparent blank image) does not open up in some application. When I open it in Photoshop, instead of being 100% transparen...

Thanks for the great replies! My case is quite lucky, as I have computer generated images, which means that the background is 100% solid color, and there are no real world relfections or anything whatsoever. I think its best if I share an example image pair, as it explains things better than I could...

I am using a program what can render color images but only without alpha information. I would like to get alpha information from those images by using two and subtracting them. I can set the background to different colors. My idea is that if I render an image with black background and an other one w...