I'll keep poking around and see if I can figure it out. There has to be a way to get the transparency to work properly. _- Obviously, using this method, anything dark but opaque would turn out transparent while anything transparent but light would turn out more opaque than it ought to. And also, there was a slight difference between the first and second versions: there's a bit of a smokey gray quality that gets completely lost if you simply do a Color to Alpha on pretty much any version of this, so building an alpha layer from the RGB channels was necessary to keep all details.ĮDIT: Nevermind, that doesn't quite work. I had decomposed into RGBA instead of just RGB, just to make sure that recomposing wouldn't be a problem with the alpha layer, and I ended up having to assemble the alpha layer as a new image rather than within the decomposed version (since I couldn't actually make any of their layers transparent), but it did end up working. I'll test that and get back with my results. I believe that should give me a completely solid #ffffff "shadow" for any opaque objects or elements and blending smoothly to alpha for anything semi-transparent. I'm thinking that what I need to do to end up with what I actually want for all the tokens I'll be making is to: After decomposing and swapping the alternate layers, creating an alpha layer by using Color to Alpha on the RGB layers, using #000000, then merging those all against a black background. So yeah, this does basically just get me the exact same thing I'd get if I'd just put a black background behind the original image, and that's not going to help me with all of the tokens, it just happened that it worked with this one because it is entirely semi-transparent anyway. This resulted in what I'm 98% sure is the colour-corrected image against a black background (which, it occurs to me, I can double-check by changing the background in the original to black which. Then went back to Components > Recompose. I then deleted the blue-background's blue layer, and copied over the green-background's green layer. The image with the green background had a completely white Blue layer, and same with the green backgrounds Green layer. This created an image with three layers in grayscale that were essentially maps for the RGB channels. Using Color Model RGB, having "Decompose as layers" checked, and not "Foreground as registration color" (pretty much entirely because I had no idea what that would do, and if this did what I was thinking it would, it surely wouldn't be necessary). My process was basically: In each image, going under the Color menu to Components > Decompose. Isn't that just the one that was against the blue background? It's actually supposed to look more green than cyan.ĮDIT: So I've been monkeying around, and I think I figured something out. r/FreeCAD FOSS Parametrical CAD/CAM /r/scribus Desktop Publishing Darktable FOSS tool for photographers r/gmic FOSS image processing framework /r/inkscape Vector-based graphic editor /r/blender 3D modeling, animation, & rendering /r/mypaint painting for digital painters /r/darktable/ photo editing software /r/krita digital painting application /r/synfig FOSS 2D Animation /r/FOSSPhotography Folks who use all the above /r/libredesign changing the paradigm Other Links of Interest Outreach through well written tutorials, presentation etc.Help test and triage bugs in the bugtracker.Alexander Prokoudine - /u/prokoudine ( LibreArts Founder) ( patreon) Ways to Assist GIMP.
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