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Carpet Stains: Help Needed!

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  #1  
Old 08-01-2010, 09:13 AM
Malky Malky is offline
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Question Carpet Stains: Help Needed!

Hi Folks,

Having a lot of trouble with the 360-degree photo below. There are large humidity stains in the carpet which I cannot balance out. The goal is simply to have the whole carpet the same shade of darkness/colour.

http://img135.imageshack.us/img135/1...ainproblem.jpg


Have tried the following techniques with limited success:

1. Cloning

Not an option given the carpet patterns

2. Painting using layer blends

Tried painting over the patchy areas using blending modes at low-opacity (screen, multiply and colour). The problem is that the detail in the carpet is lost and the patches can still be seen underneath.

3. Select (feathered) then adjustment layer>curves

Again, really struggling to hide the original stains.

Any suggestions helpful. Pasting in a whole new carpet is not an option unfortunately. Using Photoshop 7.0.

Thanks in advance!
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File Type: jpg Carpet Stain Problem.jpg (84.2 KB, 79 views)
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  #2  
Old 08-01-2010, 11:44 AM
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LonK LonK is offline
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Re: Carpet Stains: Help Needed!

I would suggest creating frequency separation layers, painting on the LF layer to even coloring, then some D&B on both LF/HF to tame any harsh spots. I did a quickie on a section on your low res sample to show potential. There's plenty of info on frequency separation here on RP. Just do a search.
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File Type: jpg CleanCarpet.jpg (35.0 KB, 149 views)
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Old 08-01-2010, 04:31 PM
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chillin chillin is offline
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Re: Carpet Stains: Help Needed!

Very nice LonK.
I would also use gradient for blending.
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File Type: gif Carpet-Stain-Problem_chillin.gif (143.3 KB, 87 views)
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Old 08-01-2010, 06:13 PM
madclark madclark is offline
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Re: Carpet Stains: Help Needed!

I would try D&B technique that you'd normally use for beauty retouching. Darken the highlights and pull up the shadows to even it all out.
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Old 08-01-2010, 08:33 PM
Malky Malky is offline
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Thumbs up Re: Carpet Stains: Help Needed!

Wow! Incredible results there! Great at this point to know that it can be done.

Thanks a bunch for those suggestions folks, will look into them and post back if I'm having any further difficulties.
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Old 08-02-2010, 05:15 AM
Malky Malky is offline
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Cool Re: Carpet Stains: Help Needed!

OK, I've had a really hard go at this today having done a lot of reading and have produced the following result.

http://img266.imageshack.us/img266/3...roblemtest.jpg

Uploaded with ImageShack.us

This was my workflow, based upon earlier suggestions:

1. Copied original layer twice
2. Gaussian blurred the lower copy (2.0 radius)
3. Initiated an 'apply image' to the top layer (blending mode: subtract, scale 2, offset 128, opacity 100%).
4. Changed top layer to 'linear light' blend mode.

My understanding is that this effectively produces an image which appears the same as the original, only the low-frequency and high-frequency layer qualities are separated. The image detail is preserved in the high-freq. layer, the general colour shades are preserved in the low-frequency layer.

5. Eyedropper-picked the intended shade from the carpet and soft brush-painted (opacity 100%) on the gaussian blurred layer. This served to even out the colour pretty effectively overall.

I'm now at the D&B stage (I think), and a little bit stuck; there's a bit of discolouration unevenness around the worst stains. Before I go any further with this, it'd be good to know that my workflow of choice up to this point is credible. Is it merely a case of persevering with D&B from here on in? I cannot believe how even you guys made the colouration in your sample touch-ups!

If I'm asking a bit too much in the way of advice, let me know. Determined to see this one through!

Thanks in advance.
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File Type: jpg Carpet Stain Problem - Test.jpg (81.4 KB, 52 views)
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  #7  
Old 08-02-2010, 08:30 AM
KTG KTG is offline
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Re: Carpet Stains: Help Needed!

Malky,
Just as a sidebar comment: My guess is that those table cloths are not beige and you might want to select them and make them white as they most likely are.

k
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  #8  
Old 08-02-2010, 08:44 AM
Malky Malky is offline
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Re: Carpet Stains: Help Needed!

Fair point KTG, I do need to look into improving my white balance management. Cheers.
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Old 08-02-2010, 08:52 AM
KTG KTG is offline
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Re: Carpet Stains: Help Needed!

Even if your white balance is correct, light reflecting off that beige color will contaminate nearly everything especially lighter tones. i.e. the table cloths, a white ceiling etc. Just something to be aware of.
k
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Old 08-02-2010, 12:17 PM
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LonK LonK is offline
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Re: Carpet Stains: Help Needed!

You're did well, Malky, with the freq sep. You might wish to try dialing more/less blur to make the LF layer. A small change can make a big difference. Keep in mind that D&B isn't your only choice to proceed. Spot Heal, Healing brush, Clone - heck, just about any tool you'd ordinarily use to retouch, can be effective on the separate freq layers. Just like anything else you learn in PS, it's just a matter of experimenting. Good luck...
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