Sharpen function

[sauron]

Sharpen Video Filter

[image] The frei0r plugin description says, “Unsharp masking (port from Mplayer).” The mplayer man page says it does gaussian blur or a sharpen using an unsharp mask routine. The underlying plugin code range is [-1.5, 3.5] where 0 is the switching point between blur and sharpen. Thus, 50% in Shotcut converts to 1.0 in the plugin code, and the switch point where there is no change is 30% in Shotcut. See also https://en.wikipedia.org/wiki/Unsharp_masking The Size parameter controls the amount…