Antialiasing_SRD

While doing researches around stylisation and kuwahara filter. I found a really nice and cheap way to make anti-aliasing.

I make a sort of a sobel filter from the image but rotated :

on green channel :

2  1  0
1  0 -1
0 -1 -2

on red channel :

 0  1  2
-1  0  1
-2 -1  0

By doing so I detect the 'stairs' patterns on the image. It worked better on colors between 0 and 1 so I added a bit of tweak if you are in aces with crazy values...

Then I simply apply a sublte idistort one way and a second one with same intensity the reversed way.

I hope it helps you create awesome images !

Have fun with it :)