09-21-2018, 10:19 AM
That is a terrible graphic, full of artefacts.
Best I can suggest: see this screenshot: https://i.imgur.com/XHez97N.jpg
1. Use the fuzzy select tool with settings
2. Addition mode
3. Feather edges with small setting
4. Select by LCh Lightness
5. Click in the areas to select (including any small areas)
Now grow that selection by 1 pixel - Select -> Grow
Fill that selection with black - easiest way, drag the black F/G swatch into the canvas
Invert the selection Select -> Invert Colour pick a grey and fill, same as before
screenshots of that: https://i.imgur.com/SnQxvnN.jpg
Kill the selection Select -> None
There will be bits of touch-up to do, - up to you.
Best I can suggest: see this screenshot: https://i.imgur.com/XHez97N.jpg
1. Use the fuzzy select tool with settings
2. Addition mode
3. Feather edges with small setting
4. Select by LCh Lightness
5. Click in the areas to select (including any small areas)
Now grow that selection by 1 pixel - Select -> Grow
Fill that selection with black - easiest way, drag the black F/G swatch into the canvas
Invert the selection Select -> Invert Colour pick a grey and fill, same as before
screenshots of that: https://i.imgur.com/SnQxvnN.jpg
Kill the selection Select -> None
There will be bits of touch-up to do, - up to you.