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any help or advice appreciated

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  #1  
Old 07-13-2010, 05:10 AM
jimbo6389 jimbo6389 is offline
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any help or advice appreciated

This scanned image is an old photo which was on velvet lustre paper, so the scan looks like bubblewrap, but there are orange chemical stains which I would like to remove and having great difficulty
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File Type: jpg ck small.jpg (91.0 KB, 62 views)
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  #2  
Old 07-13-2010, 05:46 AM
Isedo Isedo is offline
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Re: any help or advice appreciated

Hi,

Open your image in Photoshop.
Convert in Lab color mode. If Photoshop will ask for flatten say yes. No matter.

Look into chanels: the orange chemical is in the "b" chanel.
Select "b" and ho to Blur->Avarage (the first in the list)

Make visible Lab and u're done.
Hope it helped.

I see just a little problem, the orange cast will expand on all image but it hink u can easly fix this with some color toning (use curves on "b" chanel").

Another way to solve the problem is:

Convert into Lab
Go to "b" chanel
Sample with the colro sampler a grey color that stays on the bottom left part of the image (try to get the grey that stays in the color tone u need for the skin) than paint with that grey all over the image. This will fix it quite nice.


Have a nice day,
Martin
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File Type: jpg old-Image.jpg (80.5 KB, 31 views)

Last edited by Isedo; 07-13-2010 at 05:55 AM.
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  #3  
Old 07-13-2010, 10:37 AM
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mistermonday mistermonday is offline
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Re: any help or advice appreciated

Jimbo, a very quick way to get rid of the yellow is to add a Selective Color Adjustment layer above your image, select the Yellow Channel and drag the Yellow slider all the way to the left. Because the yellow in this image is so strong you will need to hit Ctrl J to duplicate that Selective Color Adj layer - and now your yellow is gone. The image could then use a little overall brightening (screenshot 1).
The skin is too red but a Hue Sat adj layer can move it toward Yellow a little (screenshot 2). I stopped here.
There are a couple of ways to attenuate the honeycomb effect from the photo paper. You can try a free FFT filter such as Image Analyzer or a good noise reduction plugin like Noiseware. Unfortunately any solution to remove the pattern will also blur the image to some extent - it's a trade off.
The skin has darker and lighter patches. Ideally you should do some dodging and burning to even out the luminosity. Alternately you could add a DeGrunge layer to smooth out those areas but that will also blut the image somewhat.
Good luck with the restoration.
Regards, Murray
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File Type: jpg Jimbo6389 Remove Yellow + Brighten.jpg (162.8 KB, 27 views)
File Type: jpg Jimbo6389 shift hue.jpg (162.8 KB, 34 views)
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Old 07-13-2010, 01:14 PM
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0lBaldy 0lBaldy is offline
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Re: any help or advice appreciated

Welcome back jimbo6389, nice to see you again!

My quickie:

Got rid of the paper texture first:

(IA) Image Analyzer (free) @ http://meesoft.logicnet.dk/

Operations>Filters>Frequency domain filter (paint out light stars/spots)

Into Photoshop

Hue/Saturation Layer
Red= Saturation +28 Yellow= Hue -21, Lightness +67



~~~ IA-Before ~~~ IA-After ~~~~ Hue/Sat layers~~~~ Hue/Sat
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File Type: jpg IA-Before.jpg (196.2 KB, 40 views)
File Type: jpg IA-After.jpg (181.3 KB, 41 views)
File Type: jpg ck-layers.jpg (196.8 KB, 23 views)
File Type: jpg Hue-Sat.jpg (190.0 KB, 30 views)

Last edited by 0lBaldy; 07-13-2010 at 01:25 PM. Reason: Added Layer pic
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  #5  
Old 07-13-2010, 04:08 PM
jimbo6389 jimbo6389 is offline
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Re: any help or advice appreciated

thank you all for your help - it was dead easy once I tried these techniques
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Old 07-13-2010, 07:25 PM
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TommyO TommyO is offline
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Re: any help or advice appreciated

Jimbo,

One more method for you (there are always many ways).

Similar to Isedo... Convert to LAB. Go to channels. Click on the b channel. Image>Adjustments>Replace Color. Use the eyedropper (which is selected by default) to select a pixel of the offending color (orange) - careful to select the right pixel, not one with the paper texture. Adjust fuzziness to obtain enough area. Now adjust the Lightness slider down to make the selection darker, trying to match the lightness of the good skin area. The actual amount is quite critical. Just one or two counts is enough to make a difference.

This method avoids the overall color cast associated with averaging the b channel. The nice thing about working in LAB is that these color adjustments don't affect the luminosity of the image, as working in RGB would.
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  #7  
Old 07-15-2010, 03:31 PM
unimatrix001 unimatrix001 is offline
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Re: any help or advice appreciated

I used a hue saturation layer choose yellows and adjusted the hue the lightened it and reduced the saturation. then ran fft filter removed the pattern. then an overall selective color using neutrals to lighten and final adjustment on colors.
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  #8  
Old 07-15-2010, 08:33 PM
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philbach philbach is offline
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Re: any help or advice appreciated

I used a selective color adjustment layer to remove the yellow. I also used a median filter to remove the texture and yes its a tad too smooth.
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File Type: jpg smooth.jpg (44.5 KB, 19 views)
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