Jump to content
Our response time is longer than usual currently. We're working to answer users as quickly as possible and thank you for your continued patience.

Photo-How to clean up scan bars from skin tones?


Recommended Posts

Aff Photo 1.9.2.1035-Win 7

I have an H&S RGB portrait photo jpg file that was scanned and the scanner left slightly visible bars on the face and forehead. Pls see attached sample of cheek. Is there a quick way of removing them, or at least ameliorating them? If you sit way back from your screen they're visible.TIA.1521737650_skinstripes.png.a501f55cae0cdb5d39de7aa59ae3fd87.png

Link to comment
Share on other sites

Hi @SamSteele You would probably get better answers if you uploaded the original image rather than a screen grab of a tiny part - if I sit way back from my screen it looks like a spectacularly unsuccessful bowel movement 🤧

You could select the offending area and try a Gaussian Blur.

1948084774_Screenshot2021-07-10at01_09_51.thumb.png.bd14b69c9c7c9b0eaab06d75868ce34b.png

Or a Diffuse:

797235989_Screenshot2021-07-10at01_12_38.thumb.png.aa32acfad5c38701b47e8417d0220aa8.png

But without sight of the original it's hard to tell.

Cheers

H

 

Affinity Photo 2.0,  Affinity Designer 2.0, Affinity Publisher 2.0, Mac OSX 13, 2018 MacBook Pro 15" Intel.

Link to comment
Share on other sites

@SamSteele Or install the G'MIC plugin, which has some good (and some not working) noise reduction / debanding filters. The one works best for is in the test category. A weak machine like mine takes a bit longer for filtering.

------
Windows 10 | i5-8500 CPU | Intel UHD 630 Graphics | 32 GB RAM | Latest Retail and Beta versions of complete Affinity range installed

Link to comment
Share on other sites

Often the FFT filter will fix problems like this but, having tried it, I have found that it will not!

John

Windows 10, Affinity Photo 1.10.5 Designer 1.10.5 and Publisher 1.10.5 (mainly Photo), now ex-Adobe CC

CPU: AMD A6-3670. RAM: 16 GB DDR3 @ 666MHz, Graphics: 2047MB NVIDIA GeForce GT 630

Link to comment
Share on other sites

Can we have the image to look at or perhaps more of it?

iMac 27" Late 2019 Fully Loaded and running Monterey 12.6.1, iMac 27" Late 2013 running Catalina 10.15.7 - Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 B|  

Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions

Link to comment
Share on other sites

I accomplished what I wanted (not perfect, but much better) by using a New Live Filter Layer >Blur > Median.   20 px; 68%; Average.
Details in the eyes, etc were excluded. The selection brush is quite accurate once you get used to playing with the size keys [  ] .

Way back in the day I could have retouched it using pencil on a 4x5 neg. (/brag)

image.png.0820820b581654d1ee2482472d7fad63.png

Link to comment
Share on other sites

Taking a different road to a more targeted approach:

  • use frequency separation with 3px to isolate unwanted color issue
  • add B/W adjustment. Set blend mode to difference
  • merge visible (looks almost black but isn’t, use levels adjustment to better see )
  • hide helping layers
  • Set blend mode to add
  • adjust opacity to about 30% gives optimal result

This preserves the fine structures.

you may need to experiment a bit with px settings.

BTW the HF layer shows that a low quality jpeg compression amplified the scan damage.

(Amplified color cast):

 

49B2169E-BECB-4F00-A822-257A5F4D7076.thumb.png.d0e1fde4910d2e838eca3863a9c7cbaa.png
Result:

02B3B9D4-1C0D-4D3C-867A-2C64AC3E9467.png

remove color from scan.afphoto

Edited by NotMyFault

Mac mini M1 A2348

LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5

iPad Air Gen 5 (2022) A2589

Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps.

 

Link to comment
Share on other sites

6 hours ago, NotMyFault said:

Taking a different road to a more targeted approach:

  • use frequency separation with 3px to isolate unwanted color issue
  • add B/W adjustment. Set blend mode to difference
  • merge visible (looks almost black but isn’t, use levels adjustment to better see )
  • hide helping layers
  • Set blend mode to add
  • adjust opacity to about 30% gives optimal result

This preserves the fine structures.

you may need to experiment a bit with px settings.

BTW the HF layer shows that a low quality jpeg compression amplified the scan damage.

(Amplified color cast):

 

 

remove color from scan.afphoto

Will give it a shot. Photo was as given. The person is now deceased. What can you do?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...

Important Information

Please note there is currently a delay in replying to some post. See pinned thread in the Questions forum. These are the Terms of Use you will be asked to agree to if you join the forum. | Privacy Policy | Guidelines | We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.