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by johncostella 1922 days ago
Ah thanks, I wasn't aware of this. That mainly talks about the original "magic" kernel ([1,3,3,1]) and an earlier version of my page. It rightly references the fact that the magic kernel (any version) by itself slightly blurs an image. The paper http://johncostella.com/magic/mks.pdf sheds more light on all of this.