Re:The Magic Kernel
by coolreader18 on Monday March 22, 2021 @12:56AM
(#26537001)
How did Facebook feel about you publishing the algorithm publicly? Specifically the Sharp+ version, as it seems that some part of that originally derived from existing Instagram code. (if I understood it correctly - or was it just an additional sharpening matrix? regardless, it sounds like something they might have wanted to keep proprietary)
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Re:The Magic Kernel
by johncostella on Monday March 22, 2021 @03:33AM
(#26537793)
I put the Magic Kernel into the public domain in 2011, long before starting at Facebook. Yes, the Sharp step is nothing more than a three-tap sharpening filter, not at all remarkable in itself, and yes the "+" is just extra sharpening with the same filter to match existing properties; it was convenient in practical terms in that it did not require extra processing, but is not special in itself.