08-20-2017, 02:07 PM
I can not think of anything to get the uneven edge you can get from applying smudge by hand.
If using Gimp 2.8.x you tend to get that dark edge which is fixed in Gimp 2.9.5 linear mode.
This using 3 or 4 applications of the 2.9.5 linear motion blur applied with different small length values and different angles. Still not uneven but not as even as a regular blur. screenshot http://i.imgur.com/oJJUoAH.jpg
If using Gimp 2.8.x you tend to get that dark edge which is fixed in Gimp 2.9.5 linear mode.
This using 3 or 4 applications of the 2.9.5 linear motion blur applied with different small length values and different angles. Still not uneven but not as even as a regular blur. screenshot http://i.imgur.com/oJJUoAH.jpg