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I made a custom one that I like:

   -.5 | 1.5 | -.5
   1.5 | -3  | 1.5
   -.5 | 1.5 | -.5
It produces a cool digital edge blurring effect. What's that called?


There's a few examples here: http://docs.gimp.org/en/plug-in-convmatrix.html

Try the "edge detection" example with -3 instead of -4, and it looks very similar to yours.




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