| hexagonstar |
Can somebody point me into the right direction how to create a color balance filter in FF similar to what you would have in Photoshop under Image/Adjustments/Color Balance? I can't get my head around how and what channels to split up and how or with what to adjust them to get similar control over the balance of the RGB channels and splitting them up into shadows and highlights.
(The idea is to create a Split Toning filter as I haven't found anything like that in the FF filter collection.) |
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| Posted: November 16, 2010 10:20 pm | ||
ThreeDee
 |
I would approach it by splitting the image into the RGB channels first, then would isolate the higlights/midtones/shadows with tone curves for each. I then would probably use gamma to adjust the values. Then merge it back into one image. (Probably over the original image).
To preserve luminosity, blend with the original in luminosity mode. |
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| Posted: November 17, 2010 3:00 am | ||
| hexagonstar |
Thanks ThreeDee, this starts to make sense. One question: After you adjust gamma for each channel's shadow/midtone/highlight you end up with 9 outputs that somehow need to be assembled correctly again. How would that be done?
I could for example take the highlight out from each color channel and use an AssembleRBG component but after doing this with all three channels we end up with three AssembleRBG components and I wouldn't know how to assemble these correctly. Here's a screenshot of my current construction ...  |
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| Posted: November 17, 2010 3:39 am | ||
Kraellin
 |
try this one. look under the hood. it might help: http://www.filterforge.com/filters/4110.html
If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig |
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| Posted: November 17, 2010 7:16 am | ||
| hexagonstar |
Thanks for the link Kraellin! Meanwhile I went with a different solution for my Split Toning approach. The Color Balancing stuff wasn't needed but I'm quite happy with the results of how it worked out. Will have a look on your suggestion too.
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| Posted: November 17, 2010 9:58 am | ||
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