RetouchPRO

Go Back   RetouchPRO > Technique > Photo Restoration
Register Blogs FAQ Site Nav Search Today's Posts Mark Forums Read


Photo Restoration Repairing damaged photos

Need techniques for cleaning dirty appearance

Reply
 
Thread Tools
  #1  
Old 06-18-2017, 03:22 PM
jared50613 jared50613 is offline
Junior Member
 
Join Date: Dec 2015
Posts: 2
Need techniques for cleaning dirty appearance

I'm working on fixing up this photo of my great grandfather's elementary school. I apologize for only using the link, size restrictions don't allow me to attach it. The photo seems to have a really dirty, dusty appearance. I didn't shrink the dimensions to make it easier to see what I mean.

I need ideas on how to get rid of this without destroying too much of the detail. I've been using the healing brush but I feel like I'll be going at this photo until I'm 90 if I use that method.

So I am looking for a way to get rid of this dirty, dusty, scratched appearance that will preserve a fair amount of the details for when I print a larger copy once its finished. I've got a few other photos that have this same kind of dirty appearance, all of them are about this same age. Any suggestions?

I should probably mention I am using GIMP and not Photoshop. Thanks for your help and ideas.
Reply With Quote top
  #2  
Old 06-19-2017, 10:53 AM
flowbox's Avatar
flowbox flowbox is offline
Member
 
Join Date: Dec 2013
Location: Dominican Republic
Posts: 31
Re: Need techniques for cleaning dirty appearance

The picture have many ink stains i don't think you can find an automatic tool for cleaning the photo.
Attached Images
File Type: jpg ink.jpg (80.3 KB, 22 views)
Reply With Quote top
  #3  
Old 06-19-2017, 01:39 PM
jared50613 jared50613 is offline
Junior Member
 
Join Date: Dec 2015
Posts: 2
Re: Need techniques for cleaning dirty appearance

Yeah in the original photo there is a large triangle in blue ink around one of the boys in, I had noticed that some of those marks were inky-looking. Is there anyway to clear up the non-ink stains? That would make faxing the ink stains easier I would think,
Reply With Quote top
  #4  
Old 06-19-2017, 04:39 PM
flowbox's Avatar
flowbox flowbox is offline
Member
 
Join Date: Dec 2013
Location: Dominican Republic
Posts: 31
Re: Need techniques for cleaning dirty appearance

If you have the original image, with better resolution and without the jpg artifacts, you can do a good restoration using different techniques like per channel cleaning, working in color lab space etc.
Sorry i don't know GIMP but I'm pretty sure do not exist an automatic stains cleaner.
Reply With Quote top
  #5  
Old 06-21-2017, 11:20 AM
Shoku Shoku is offline
Senior Member
 
Join Date: Apr 2010
Posts: 289
Re: Need techniques for cleaning dirty appearance

Quote:
Originally Posted by jared50613 View Post
I should probably mention I am using GIMP and not Photoshop. Thanks for your help and ideas.
If GIMP has a dust and Scratch filter that's the first place I'd start - and about the only automatic adjustment for this type of work. It's not perfect, but reduces a lot of the spots and scratches.

See below for a quick PS D+S adjustment compared to the original.
Attached Images
File Type: jpg Orig.jpg (68.7 KB, 13 views)
File Type: jpg DS.jpg (64.9 KB, 11 views)
Reply With Quote top
  #6  
Old 06-21-2017, 02:36 PM
handypandy handypandy is offline
Junior Member
 
Join Date: Jun 2017
Posts: 1
Re: Need techniques for cleaning dirty appearance

This was a one minute fix in Gimp....obviously the more time spent could yield a more authentic look, if thats what you are after...
https://www.dropbox.com/s/g1c8kzk3ux...l_pic.jpg?dl=0
Reply With Quote top
  #7  
Old 06-21-2017, 09:36 PM
mikemorrell mikemorrell is offline
Junior Member
 
Join Date: Jun 2017
Location: Netherlands
Posts: 10
Re: Need techniques for cleaning dirty appearance

Dirty, dusty tones (especially whites) are a common problem in old photos. I'm a relative newbie at restoration with just 2 months experience but this is generally my approach using Photoshop. You can work out what the equivalent steps are in GIMP.
1. Make a duplicate layer and set the 'levels' to the black and white points in the photo. Maybe tweak the grey point just a bit to give darker or brighter mid-tones. Usually, this step shows any 'tone damage' much more clearly.
2. If it's a a B&W image, add a B&W adjustment layer to minimize any colour stains. Check each colour channel and each B&W color filter to see which one shows the least damage. Use this one to work one.
3. Duplicate the layer/channel and apply the 'dust and scratches' filter with settings that get rid of small spots and scratches but retain as much detail in faces/eyes as possible.
4. Use the 'history brush' set to just before the 'dust and scratches' filter and paint over the fine details you want to keep sharp: eyes, mouths, nostrils, creases, edges, etc. All the dust and scratches in these small areas will of course re-appear.
5. Zoom in and use the minimum transparency blur and/or very small 'spot healing' brush to reduce the dust/grain/scratches from around the (small) areas restored in 4.
6. Zoom back out and see how the whole photo looks. Click the 'Dust and scratches' + history brush layer on and off to check for details that haven't been restored with the history brush. Restore these with the history brush.
7. There may well still be 'dirty or muddy' areas of the photo left in the blacks, whites and mid-tones. If so, I usually start 'painting':
A. Sometimes multiple masked 'curves' adjustment layer are all you need to balance 'dirty' tones. Some tones or colors in the photo need brightening. Others need darkening. Adding 'Curves' adjust layers and editing the masks to darken/brighten specific areas of the photo often goes a long way to clarifying the tones.
B. If A doesn't do the trick, create masked layers for each of the main tones in the photo: White, Black, Dark Grey and Light Grey (or more if needed). Using the eye-dropper tool, select the grey value for each tone from the 'Dust and Scratches' layer and just paint over the relevant parts of the layer at 100% transparency with a large soft brush. No need to be precise, that comes late in the mask. It's likely the eye-dropper won't be 100% accurate so add a tied 'curves adjustment layer' to each tone layer either now or later. Then you can lighten or darken the tone layer to match the corresponding tones in the photo.
C. Using the masks on the tone layers (and possibly fine-tuning the tone using the tied curves adjustment to brighten or darken the tone a bit) just 'paint in' the tone (white mask brush) with a soft brush transparency that matches the tone you want to make. So dirty/discolored white areas could be 'painted in' with the white mask at a brush transparency of maybe 60%-80% less discolored white ares could be 'painted in' with a 20% -40% brush transparency'. Brush transparencies of about 20%, 40%, 60& and 80% usually cover the range of discoloration/muddiness.
D.For each tone layer, adjust the blending mode ('normal' is usually OK) and layer transparency. Just eyeball it. For example if you use a 'white' tone layer to paint over 'dirty' whites, you don't want to remove all the texture and shadows too. So a 'normal', 'overlay' or 'soft light' blending mode at perhaps 40%-80% transparency will give you 'cleaner whites' while retaining enough of the textures/lines/shadows.
8. If there are still areas of the photo that should be the same tone/texture but aren't, the it;'s time to get patching, healing and cloning to even out the
differences. For small differences in tone, the blur tool (at 20% - 100% transparency) is often enough to blend these.
10. A B&W 'finish' tint (5%-15% transparency in 'soft light') in an additional color layer often helps to 'blend' the tones in a photo.

Hope this helps,

Mike
Reply With Quote top
Reply

  RetouchPRO > Technique > Photo Restoration


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Learned too many techniques and need fresh eyes ctny Photo Retouching 3 01-17-2016 02:10 AM
still life retouching techniques zagg77 Photo Retouching 13 05-29-2015 01:26 AM
Dodging & Burning Techniques heyrad Photo Retouching 0 06-24-2013 11:30 PM
Looking for quick techniques! davidlicious Photo Retouching 6 11-02-2012 06:53 PM
Advanced techniques? Ikiri Photo Retouching 3 11-17-2010 03:15 PM


All times are GMT -6. The time now is 08:01 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO ©2011, Crawlability, Inc.
Copyright © 2016 Doug Nelson. All Rights Reserved