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Removing yellow splotches

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  #1  
Old 05-11-2013, 10:30 PM
TomCunningham TomCunningham is offline
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Removing yellow splotches

Hello, this is my first post here. I've been scanning in old photos and doing some color correction with GIMP, mainly using curves. In the attached photo when I get the colors about right, yellow splotches appear in various places. I've seen some posts for removing stains and spots, but was interested in a way to remove these all at once using some combination of layers and masking. Unfortunately, I am a layer noob, so some of the descriptions for doing this just don't translate. Any help in this area (or a pointer to it) would be greatly appreciated.
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File Type: jpg Yellow Splotches.jpg (79.1 KB, 168 views)
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  #2  
Old 05-12-2013, 07:15 AM
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chillin chillin is offline
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Re: Removing yellow splotches

I would use HSL.
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  #3  
Old 05-12-2013, 08:43 AM
TomCunningham TomCunningham is offline
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Re: Removing yellow splotches

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Originally Posted by chillin View Post
I would use HSL.
Wow, very nice, thanks!
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Old 05-12-2013, 11:22 AM
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Cameraken Cameraken is offline
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Re: Removing yellow splotches

Hi

Nice Chillin.

Tom,
I tried it in The Gimp and it is not quite as easy because the Hue/Sat tool appears to affect the luminosity more than in Photoshop. Even changing the blending mode of the Hue/Sat layer to colour still affected the luminosity. I found the best results were achieved by setting the Hue/Sat layer to Lighten Only mode.

The first picture below is the Hue/Sat layer which shows how the luminocity has been changed (darkened)
The second picture is with the Hue/Sat layer set to Lighten Only mode.

Regards

Ken
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File Type: jpg Yellow-Splotches_Gimp_ck.jpg (99.8 KB, 85 views)
File Type: jpg Yellow-Splotches_Gimp2_ck.jpg (65.6 KB, 76 views)
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  #5  
Old 05-12-2013, 02:59 PM
TomCunningham TomCunningham is offline
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Re: Removing yellow splotches

Quote:
Originally Posted by Cameraken View Post
Hi
The first picture below is the Hue/Sat layer which shows how the luminocity has been changed (darkened)
The second picture is with the Hue/Sat layer set to Lighten Only mode.
Amazing. I'll definitely start playing with the layer modes more. I doubled down on your technique and managed to eliminate almost all the yellow. Thanks!
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  #6  
Old 05-13-2013, 05:37 AM
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Nezbitten Nezbitten is offline
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Re: Removing yellow splotches

My offering would have been to go to channels and go to the blue channel. Use the dodge brush and paint over the darker areas with a very low opacity (shadows selected) or use your wacom pen. Very good for subtle changes.
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  #7  
Old 09-28-2013, 05:24 AM
kosh22 kosh22 is offline
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Re: Removing yellow splotches

Hi

Sorry for bumping this thread but I am new here and curious on this particular posting.

Why not use a colour blending layer instead of HSL layer? I was having a quick go with that last night and was obtaining some good results.

I found the HSL technique depended hugely on the light quality at my workstation and a good eye. I struggled to deal with the yellow on the jacket using HSL.
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  #8  
Old 09-28-2013, 12:12 PM
Wolfman Wolfman is offline
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Re: Removing yellow splotches

This may be simplistic but I went into hue/saturation and desaturated yellows.
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  #9  
Old 09-28-2013, 02:53 PM
kosh22 kosh22 is offline
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Re: Removing yellow splotches

I think both methods are fine. I did colour blending with the following result. I actually found the colouring in quite therapeutic!!!! I also passed it thru a noise filter and Vivaza
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File Type: jpg Yellow Splotche_final.jpg (72.9 KB, 40 views)
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