07-04-2018, 07:47 AM
(This post was last modified: 07-04-2018, 08:55 AM by rich2005.
Edit Reason: added screenshots
)
One of the 'holy grails' & I have never found an easy way. In Gimp 2.10 there is fore-ground select with an option Engine Matting Levin which is supposed to retain those semi-transparent pixels. For some reason not in all versions of Gimp 2.10 I think the Windows version is ok.
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Missing in the linux flatpak. edit: I see you are using linux 2.(8).14 You might get a linux 64 bit appimage from https://github.com/aferrero2707/gimp-appimage/releases/ Careful which one you pick, they are in alpha sort not by date, latest is 5 down gimp-git-2.10.3-20180628......
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A search will bring up some info. example https://www.youtube.com/watch?v=CiGeNodq0WA
Tedious but I think a layer mask with a tiny fuzzy brush is best. I suspect that is what you already use.
Edit: Matting Levin works in my linux 2.9.9 appimage so quick-ish example. Pulled this from google. I think larger rather than smaller works best with this tool.
FG-select invokes the free select tool to draw roughly round the subject. https://i.imgur.com/1TSaLuA.jpg
That gets an outer mask and a brush to paint an inner mask. https://i.imgur.com/a1enEFj.jpg
After the tool does some calculating (takes time, be patient) https://i.imgur.com/WAogRke.jpg
Hit enter to get a selection and complete the tool. Selection can go straight to a layermask. https://i.imgur.com/OtZx0il.jpg
As you can see less-than-perfect but a starting point to tweak the layer mask.
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Missing in the linux flatpak. edit: I see you are using linux 2.(8).14 You might get a linux 64 bit appimage from https://github.com/aferrero2707/gimp-appimage/releases/ Careful which one you pick, they are in alpha sort not by date, latest is 5 down gimp-git-2.10.3-20180628......
------
A search will bring up some info. example https://www.youtube.com/watch?v=CiGeNodq0WA
Tedious but I think a layer mask with a tiny fuzzy brush is best. I suspect that is what you already use.
Edit: Matting Levin works in my linux 2.9.9 appimage so quick-ish example. Pulled this from google. I think larger rather than smaller works best with this tool.
FG-select invokes the free select tool to draw roughly round the subject. https://i.imgur.com/1TSaLuA.jpg
That gets an outer mask and a brush to paint an inner mask. https://i.imgur.com/a1enEFj.jpg
After the tool does some calculating (takes time, be patient) https://i.imgur.com/WAogRke.jpg
Hit enter to get a selection and complete the tool. Selection can go straight to a layermask. https://i.imgur.com/OtZx0il.jpg
As you can see less-than-perfect but a starting point to tweak the layer mask.