I've tested a lot of comb filters, including 2D adaptive and 3D ones.
If you're accustomed to seeing the S&W Zone Plate with a 3D comb filter, then what you see may shock you (in a bad way). I ask you to keep your eyes on the averaged sample up top as much as possible. :-)
The averaged sample was generated with a simple c1.Merge(c2).
You'll notice a loss in diagonal resolution, but it's impossible to notice with real footage. Most 2D adaptive comb filters (like the Faroudja VP-100) lose diagonal resolution. You need a 3D comb filter to get it back.
