08-31-2020, 08:52 AM
(This post was last modified: 08-31-2020, 09:50 AM by rich2005.
Edit Reason: update
)
Not really possible to give any definitive answer. Looking at your second screenshot - where the foreground is cut I do not see why those artifacts remain - never come across that before. They look like a separate layer. If you can post an example image somewhere, Dropbox or similar, you might get a more positive answer.
You could try a different approach. Whichever way I make the selection. Apply that selection to a layer mask, Layer -> Mask -> Add Layer Mask Use the from selection option. Then tidy the mask up, there are always edges to tidy up, painting out those defects is just another added operation.
Edit: This is how I might attack it.
screenshots: https://i.imgur.com/WEcTW8Y.jpg
(1) Made with FG Select and Matting Levin option. It does create a 'semi-transparent border, that is the 'unknown region' and intentional. Meant to capture the holy-grail of portraits, that stray hair. Never works for me. However I use the selection to create a layer mask. Sometimes a black or dark grey temporary layer underneath helps.
(2) I can see the occasional 'small-island' of the selection in (1) so I shrink the selection by 2 or 3 pixels to 'collapse' those areas.
https://i.imgur.com/n8YLxXc.jpg
(3) With the layer mask active and with the selection inverted, I can work on the background Black opaque, White transparent, Greys produce semi-transparency. Paint in black with large brush any areas in the back ground.
(4) Carefully paint in around the selection, it is not a border as-in-a-wall, there is feathering. After that up to you. I turn off any selection, and tidy up the Foreground border with a fuzzy brush. The X key is there for this, toggles between FG and BG colour, for paint-in / paint-out.
You could try a different approach. Whichever way I make the selection. Apply that selection to a layer mask, Layer -> Mask -> Add Layer Mask Use the from selection option. Then tidy the mask up, there are always edges to tidy up, painting out those defects is just another added operation.
Edit: This is how I might attack it.
screenshots: https://i.imgur.com/WEcTW8Y.jpg
(1) Made with FG Select and Matting Levin option. It does create a 'semi-transparent border, that is the 'unknown region' and intentional. Meant to capture the holy-grail of portraits, that stray hair. Never works for me. However I use the selection to create a layer mask. Sometimes a black or dark grey temporary layer underneath helps.
(2) I can see the occasional 'small-island' of the selection in (1) so I shrink the selection by 2 or 3 pixels to 'collapse' those areas.
https://i.imgur.com/n8YLxXc.jpg
(3) With the layer mask active and with the selection inverted, I can work on the background Black opaque, White transparent, Greys produce semi-transparency. Paint in black with large brush any areas in the back ground.
(4) Carefully paint in around the selection, it is not a border as-in-a-wall, there is feathering. After that up to you. I turn off any selection, and tidy up the Foreground border with a fuzzy brush. The X key is there for this, toggles between FG and BG colour, for paint-in / paint-out.