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Photo Retouching "Improving" photos, post-production, correction, etc.

What's the best technique to deal with this img ?

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  #11  
Old 08-31-2010, 02:29 PM
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Der_W Der_W is offline
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Re: What's the best technique to deal with this im

The amount of blur is easily defined by what parts of the image you want to protect.
If you want to protect the pattern, use an amount that completely DESTROYS it (the reason is that this is going to be on the high pass layer and therefore whatever you do to the low pass, blur, paint, clone, heal, isn't going to affect it).
On the other hand you shouldn't use a higher radius than needed because otherwise you'll have less opportunity to fix flaws.

In this case I used a radius of 5px, used various blurs on the low pass layer and cloned on the high layer to get rid of the remaining patches (sample should be set to "Current layer").

http://www.abload.de/img/sepxrb8.jpg
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  #12  
Old 08-31-2010, 08:24 PM
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mistermonday mistermonday is offline
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Re: What's the best technique to deal with this im

Buso, for this particular image I used a combination of Frequency Separation and a Degrunge layer. It may appear more complicated than it is because for each of the two High Pass layers I created I used the Accurate High Pass as described in the Model Mayhem thread. You can simplify things a bit by using the conventional Filter>Other>High Pass. Given that your image does not have a lot of fine highlights, you may not notice a difference visually.
Anyway here goes the flow which you can follow by looking at the Layer Palette attachment. The final image is low resolution. I can give you the high res psd file if you like.
The first thing you want to do is to create a HF layer which will contain the fine leather grain but not the wrinkles. Choosing the correct radius here is critical. For this image that radius is 1.2 px. So duplicate the BG twice, gaussian blur the lower copy 1.2 px (named LF-1.2) and then apply image to the upper copy and set blend to Linear Light (named HF-1.2). For this image you can work in 8 bit as you won't see any difference. Now you can delete that LF1.2 layer - you won't need it any more. The remaining HF-1.2 will be used at the end to restore the texture, so turn its visibility off for the moment.
OK, now go back to the BG and duplicate it twice. This time you want to make another split but you use a radius of 45 px. This is the radius for this image at which all of the wrinkles are blurred away. after you have completed the split delete the low frequency GB layer as it will not be used. So effectively what you have left is a high frequency layer which is equivalent to an accurate high pass with a radius of 45 px.
You are now going to turn that HF-45 layer into a Degrunge layer. If you are not familiar with a Degrunge layer, there is an excellent tutorial here at RP created by member ByRo. You can find it at this link: http://retouchpro.com/tutorials/?m=show&id=213
The concept of a Degrunge layer is to isolate in an image a group of edges that contain grunge / blemishes / stuff you want to remove. All of the edges below and above that band or range are protected. The tutorial will be valuable for you to go thru.
So now with the HF45 layer active, perform a Gaussian Blur with a radius of 1.2 on that layer. Now invert the layer and you will see it look strangely blurred. Hold the Alt key down while clicking the Mask Icon at the bottom of the layers palette to add a Hide-All Mask to that degrunge layer to restore your view. Now with the mask active draw a rectangular marquee stretching across the back of the couch but inside leaving a border that excludes the dark black border around the backs where there is no texture. Feather that selection about 20 px. With your foreground swatch white, hit the delete key to fill the mask with white where selected. That area of the couch should now be weirdly blurred and smooth with no texture but the light reflections will still be there.
OK now for the finishing touches. Go up to the HF-1.2 layer and turn it on. You will see the texture return. Add a Contrast/Brightness Adj layer above and clip it to the HF-1.2 layer. Increase the contrast to boost the texture to where it matches the rest of the couch. Alt+Drag the layer mask from the Degrunge layer to the Brightness/Contrast layer and click yes when asked to replace the mask. This will limit the intensification of the texture on to the area you have degrunged.
Now you are done. It's actually pretty quick to do, there's no hand painting. And you can create actions to speed up the generation of the splits. You can also just try the old fashioned Filter > Other > High Pass.
Regards, Murray
Attached Images
File Type: jpg Buso23 Wrinkles MM Final LoRes.jpg (176.0 KB, 100 views)
File Type: jpg Buso23 MM Wrinkles Screenshot.jpg (183.3 KB, 103 views)
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  #13  
Old 09-01-2010, 09:14 AM
julianmarsalis julianmarsalis is offline
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Re: What's the best technique to deal with this im

MM very nice work...
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  #14  
Old 09-01-2010, 09:23 AM
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Re: What's the best technique to deal with this im

Julian, thank you.
Regards, Murray
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  #15  
Old 09-01-2010, 10:51 AM
dkcoats dkcoats is offline
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Re: What's the best technique to deal with this im

Murray, that's brilliant.
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  #16  
Old 09-01-2010, 12:06 PM
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mistermonday mistermonday is offline
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Re: What's the best technique to deal with this im

DC, thank you,
Regards, Murray
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  #17  
Old 09-01-2010, 12:50 PM
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Re: What's the best technique to deal with this im

Mister Monday, thanks for your enourmous help and thanks for taking the time to elaborate the technique. I was able to retouch the images in no time and the results are great. Again, thanks again as you saved me a lot of time

Regards, Ljupco

P. S. What other uses is this technique helpful for ?
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  #18  
Old 09-01-2010, 01:31 PM
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Re: What's the best technique to deal with this im

Ljupco, you are very welcome.
Frequency Separation has a number of uses in retouching as pointed out in the ModelMayhem thread. It's great where you need to work on fine detail separately from large detail and color / tone.
Degrunge is useful for cleaning up rough skin, wrinkles, and blemishes. In high end retouching it is useful to reduce the harsh transitions / high contrast while still preserving texture. It is still a form of blurring but when it is applied sparingly and at the correct radii it softens skin without making it appear to have been blurred. It can save a lot of time by reducing the amount of Dodging and Burning one needs to do.
Regards, Murray
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  #19  
Old 09-01-2010, 01:37 PM
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Re: What's the best technique to deal with this im

Ok, Thanks Murry. I'll read more about it from the links in this thread. Thanks again and regards. Ljupco
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  #20  
Old 09-01-2010, 06:58 PM
pixelzombie pixelzombie is offline
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Re: What's the best technique to deal with this im

Quote:
Originally Posted by mistermonday View Post
I can give you the high res psd file if you like.

Regards, Murray

i would appreciate it if you could post the psd file, thanks.
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