Colour Correction Composite Nodes
Matt Ebb has recently done a lot of work on composite nodes resulting in
two new nodes: ‘Colour Balance’ and ‘Hue Correct’
to match your render to a live action element, usually by matching the
blacks and whites along with the saturation of colours.
Relevant commit logs, including more examples:
http://lists.blender.org/pipermail/bf-blender-cvs/2010-January/025328.html
http://lists.blender.org/pipermail/bf-blender-cvs/2010-January/025355.html
http://lists.blender.org/pipermail/bf-blender-cvs/2010-January/025377.html
-Enjoy-
Michael (mfoxdogg)
I have very little idea how these work, but I tried them out and they’re pretty awesome. Very abstract. Tutorial please? :D lol
Jesus christ, i was thinking about such nodes yesterday. And why they aren’t in blender.
Matt can read minds!
“Jesus christ, i was thinking about such nodes yesterday. And why they aren’t in blender.
Matt can read minds!”
And code those two nodes in one day!!! (since he started just after reading your mind) :D
How do you actually get the nodes into blender? I have no idea.
Thanks.
Wow. what a nice “adjustable mood maker” :)
Matt starts to be my personal hero! Thank you.
Another useful node would be ADJUSTABLE VIGNETTING TOOL. Pleeeease? :)
I wonder. Will the nodes be animatable in 2.5 too? Instead of using Time input to determine the factor. If it would be animatable then you could also adjust the colour without too much effort.
Is it possible to use these nodes now?
“I wonder. Will the nodes be animatable in 2.5 too? ”
I think they will. One of the targets for 2.5 is “Everything Animatable”.
Thanks Matt :)
Now if only Blender’s compositor could support color correction in the Lab color space. That would really make my day.
I’d love to have Lab color are well, but there is something almost as good. Here is how to get something similar to Lab curves:
1 Input node of some type (image): Out to 2
2 In from 1: Separate YCbCrA (Jpeg): Out to 3
2-3 connections: Y>R, Cr>G, Cb>invert node>B, A>A
3 In from 2: Combine RGBA: Out to 4
4 In from 3: RGB Curves: Out to 5
5 In from 4: Separate RGBA: Out to 6
5-6 connections: R>Y, G>Cr, B>invert node>Cb, A>A
6 In from 5: Combine YCbCrA (Jpeg): Out to 7
7 In from 6: Rest of graph or output (viewer)
With this node configuration the RGB curves now operate as:
R = L
G= ~a
B=~b
“Cr” and “Cb” are not exactly the same as “a” and “b”, but they operate in the same area of the spectrum so for most color tweaks I’ve found this gives an adequate Lab substitute in Blender.
@ZareOne: That’s why I’m wondering it. :P Are they going to keep their promises? :P That’s the question behind the other question. :)
@AniCator: I’m not at my home now, so I can’t check but I’d swear node parameters are already animatable in 2.5 Alpha 0. Can anyone confirm?
Awesome! Can’t wait to use this. The results I’ve seen so far make it look really useful.
Thanks Matt :)
Thank you Matt ! These tools will be very useful for “étalonnage”, I don’t know the word in english… maybe Calibration ?
Hi guys,
Nodes are already properly animatable in SVN, there’s limited support in alpha 0 but that’s all been fixed up by now.
Just RMB on any UI control and choose ‘insert keyframe’. You can edit the keys in the graph editor/dopesheet like any other.
Seems very useful, especially to synchronize color tones between 3-D and live action stuff. Previously people had to use After Effects.
Great job!
Wow, I think this beats what after effects can do. I really waited for this.
Blender is growing so powerful recently.
Hey, this is really great!
Ooh – a pretty rainbow looking node!
Just kidding. I can’t wait to try it out. Great work!
Awesome. Thanks Matt. I find it funny this article came before 10 reasons why your render sucks.
I try this and very awesome …