I recently discovered a quick method for sharping in GIMP using the NL Filter under Filter/Enhancement/NL Filter.
It has three options: the first two serve for smoothing but the third (Edge enhancement" works on the edges and gives a good result similar to my preferred Selective Sharpenging method that works on the edges of the image.
Anyone has never proved?
Please let me know what you think about.
Original:
With NL Filter at 0,30 and 0,33 for Alpha and Radius





