Although I’m not a big fan of sharpening an image in most cases, sometimes it does help bringing out more details. Sharpening is basically exaggerating the brightness difference within an image and this process has some nasty side effects. One particular one is the dark edges introduced around the objects.
The other days one of my colleagues at work, Luke Armstrong , showed me the simplest trick that improves this dramatically! I was surprised why I haven’t thought about it myself! The solution is maxing the sharpened image with the original image, so this way only the highest positive values comes across! Neat and simple! no more dark edges!