[Bf-vfx] Keying nodes

[Daniel Salazar - 3Developer.com]

Wishlist for good chroma:

multisample collecting!

this means picking not only one RGB value, but any amount in order to pick
up various shades of green in the same keyer. The current alternative to
this is to run many keyer setups in a chain, each one with a slightly
different keying color input

fine tuning to perfection!

the amount of clamping, substractions and scaling that go on inside of the
keying process need to be controllable by the user in order to loose the
least amount of detail *per channel*

per channel filtering in multiple spaces!

when dealing with nasty 4:2:2 footage, filtering the chroma channels before
proceeding with the keying can help get a cleaner result. This is due to Chroma
Subsampling <http://en.wikipedia.org/wiki/Chroma_subsampling> in some
codecs/cameras


Daniel Salazar
patazstudio.com
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