(06-17-2023, 09:46 PM)Ofnuts Wrote:
- Scale up 4 times using Linear interpolation, which is going to produce lines with fuzzy borders
- Threshold the alpha (at 50%)
- Scale down to original size using NoHalo interpolation
I'm not really sure if you speak about Layer > Transparency > Threshold Alpha..., as you don't tell the path
If so, still you will have pixelated line, because the 0 to 100% is about the thickness/extend of the threshold.
Instead I would try Filters > Generic > GEGL Graph... and input something like "gegl:opacity value=1.5" or a bigger value
But in this case I would certainly use the Colors > Curves and on the alpha channel do a "vertical curve" because of better control of thickness AND smoothness
The scale-up/linear - scale-down/nohalo thing is clever, it does the thing nicely/smoothly
