Despill to Color v4.0

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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
23 Feb 2019


Demo video:

If you are trying to fix an objects edge, by bringing back its original color, then this tool is perfect for you! DespillToColor is designed to work best with a specific user defined screen color and therefore a good local solution for certain areas of your plate.

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

- 'balance' controls how much red tones are being affected by the despill operation opposed to blue and green tones.

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

- 'erode' and 'falloff' sometimes work well for increasing the effect in defocussed areas. I usually go for ramping up the 'gain' OR the 'erode', rarely both.


Example pics: (For testing I recommend blurring these jpegs a little to get rid of compression artefacts.)


Updates in V. 4.0:

Tweaked ui and added knob descriptions.


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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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