Despill to Color v3.9

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Contributor: Johannes Masanz
- pick screen color - set target color
11.0, 10.5, 10.0, 9.0 or later
Linux, Mac, Windows
26 Dec 2018


Demo video:

If you want a quick and good quality overall despill, go for DespillMadness or ApDespill. If you are trying to fix an objects edge, by bringing back its original color, then this tool is perfect for you.

- Pick blue- / greenscreen color - set or pick target color.

- Balance: When despilling blue, lower balance values stronger affect red tones. (skin etc.) Higher values affect greens more. (plants etc.) For green despill the effect on red and blue tones is being balanced (red: lower, blue: higher).

- Increasing gain will affect a wider range of colors, like the finetune knob in DespillMadness.

- Erode and falloff works good for defocussed areas. I usually go for increasing the gain OR the erode, rarely both.


Pics for testing: (Since compression artefacts get pushed a lot when despilling, blurring the jpgs a bit for testing gives you a nicer result.)


Updates in V. 3.8:

- The screentype (green or blue) will now be set automatically, when a screen color is picked. The 'screen type' knob turned out to be redundant and got removed.

Updates in V. 3.9:

- The screentype will still be set automatically, when a screen color is picked. For the rare case, where the despill color should not be the picked color I added an override in the 'advanced'section.

- Fixed an issue where some values would not behave correctly with gain values below one.

- The 'mask' input now masks the spillmatte output too.

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+1 # Lucas Pfaff 2017-02-07 13:55

it looks nice but somehow it doesn't work for me out of the box. It seems that the gamma-falloff Grade nodes don't work as anticipated, the alpha doesn't work as mask (even if I turn off Black clip). Disabling them or using one of the colour channels as mask for despillColor-Gr ade makes it work.

But also, my screen only gets greener; enabling "Reverse" on the despillColor then makes it work at it seems it should :o
# Johannes Masanz 2017-02-07 20:08
ooops :) i never tested it with green screen since i created the gizmo.that should work now. thanks for the comment!
# Lucas Pfaff 2017-02-08 14:21
Hi Johannes,

haha, when I checked it out I had no bluescreen at hand :)
Works like a charm now. I actually just put it to some good use in a comp! :)

# Johannes Masanz 2017-02-10 07:57
Thank you! Thats great to hear :)
I think the latest version is pretty solid now. Let me know if there is anything left to be improved / added.
# selvam B 2017-02-16 06:05
Why am I getting error "Knob despillGamma disable is of an unknown type 80"?
# Johannes Masanz 2017-02-16 08:08
Hey, which Nuke version are you on? Other than that the node is working?

You could right click and go to "manage user knobs", then delete that knob, choose "pick" and grab that knob anew from the "despillGamma" node. Let me know if you need a more detailed description.
# selvam B 2017-02-17 09:25
Nuke version 7.0.v8 & thanks i will try that....
# Johannes Masanz 2017-02-17 15:29
Today I rearanged the falloff knobs a bit for better usability. The latest version should work for you. :)
# Tilman Paulin 2017-02-27 11:04
I really like this despill! Thanks for your work on this and for sharing it, Johannes! :)
# Johannes Masanz 2017-02-27 20:23
Thanks for the positive feedback :) - made my monday morning!
# satheesh R 2017-07-31 06:20
This tool looks promising Johannes, Really appreciated your effort to avail for public use.
some suggestion:
1. Replace 'ErodeNode' with some other expressions. I really like the 'Keylight' erode option. it works 0.1 aswell.

2. Looking for 'protect tones' future in next update. Check adrian's apDespill for ref.
# Johannes Masanz 2017-07-31 19:55
Thanks for the suggestions! I will have a look if there is a better way to do the erode.

AP Despill is a great tool!
I will consider including a similar feature but maybe I prefer to keep it simple ; ) I really like to use despillToColor more often in one comp and tweak every instance so that it works well with a certain area / color / object (on top of an other, general despill). A little fix here, a little fix there ... thats why it is meant to be light and quickly tweaked.

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