RetouchPRO

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


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

Matching a target & destination portrait image

Reply
 
Thread Tools
  #21  
Old 02-02-2013, 07:58 PM
frankg frankg is offline
Member
 
Join Date: Nov 2007
Posts: 80
Re: Matching a target & destination portrait image

Quote:
Originally Posted by Phaeton View Post
Sorry I made a wee misstake there and I'm not very techie:

One way for me to select skin colours (oranges, yellows with reds) is to go to calculations, select the red and blue channels as source 1 and 2, invert them, set to subtract (offset 0 and scale 1) and create a new channel. This generally gives me the tones I'm looking for when trying to select fine variations in skin.
This channel can then be manipulated and tweaked to perfection: apply a levels to it to open up the shadows; I always grab the dodge and burn tool and plain paint brush and darken or lighten things as needed as well, right onto the channel before making a mask out it.

I end up with this weird looking but very useful masks with the predominantly yellows and reds of the skin selected by their luminosity.
I've never seen channels like this before. Mine are just filled or painted black &/or white. Amazing.
Reply With Quote top
  #22  
Old 02-05-2013, 11:31 AM
robmac robmac is offline
Member
 
Join Date: Sep 2009
Posts: 30
Re: Matching a target & destination portrait image

Had a little go. I think my shadows arent really neutral much more blue , but is it a step in the general direction?


https://dl.dropbox.com/u/41431451/RE...iff%20copy%202
Reply With Quote top
  #23  
Old 02-05-2013, 02:15 PM
frankg frankg is offline
Member
 
Join Date: Nov 2007
Posts: 80
Re: Matching a target & destination portrait image

photoshop doesn't seem to be able to open the file. I tried renaming it with .tif extension but still no luck
Reply With Quote top
  #24  
Old 02-05-2013, 02:42 PM
robmac robmac is offline
Member
 
Join Date: Sep 2009
Posts: 30
Re: Matching a target & destination portrait image

Just renamed it , see if that helps
Reply With Quote top
  #25  
Old 02-05-2013, 03:42 PM
frankg frankg is offline
Member
 
Join Date: Nov 2007
Posts: 80
Re: Matching a target & destination portrait image

can you post a new link to the re-named file. The old one no longer works
Reply With Quote top
  #26  
Old 02-05-2013, 04:11 PM
robmac robmac is offline
Member
 
Join Date: Sep 2009
Posts: 30
Re: Matching a target & destination portrait image

https://dl.dropbox.com/u/41431451/RETOUCHPRO/testcopy
Reply With Quote top
  #27  
Old 02-05-2013, 06:50 PM
frankg frankg is offline
Member
 
Join Date: Nov 2007
Posts: 80
Re: Matching a target & destination portrait image

Thanks. I have it now but since it didn't have any file extension (.psd or .tif) I tried to add one but without success. Then I added .jpg and it could open but obviously without any layers so I cant see what you may have done.
Reply With Quote top
  #28  
Old 02-07-2013, 05:03 PM
kav kav is offline
Senior Member
 
Join Date: May 2009
Posts: 574
Re: Matching a target & destination portrait image

Quote:
Originally Posted by Phaeton View Post
Sorry I made a wee misstake there and I'm not very techie:

One way for me to select skin colours (oranges, yellows with reds) is to go to calculations, select the red and blue channels as source 1 and 2, invert them, set to subtract (offset 0 and scale 1) and create a new channel. This generally gives me the tones I'm looking for when trying to select fine variations in skin.
This channel can then be manipulated and tweaked to perfection: apply a levels to it to open up the shadows; I always grab the dodge and burn tool and plain paint brush and darken or lighten things as needed as well, right onto the channel before making a mask out it.

I end up with this weird looking but very useful masks with the predominantly yellows and reds of the skin selected by their luminosity.
I really like that, as I can see how it would be synergetic with painted masks or paths, and it requires very little time to set up its starting point.
Reply With Quote top
  #29  
Old 02-09-2013, 09:08 AM
frankg frankg is offline
Member
 
Join Date: Nov 2007
Posts: 80
Re: Matching a target & destination portrait image

Would it also be true that you could make a mask like this from the others colours too by selecting the other channels as source 1 & 2 in calculations. Or by inverting the mask you'd have a selection of the opposite colour ?

Quote:
Originally Posted by Phaeton View Post
Sorry I made a wee misstake there and I'm not very techie:

One way for me to select skin colours (oranges, yellows with reds) is to go to calculations, select the red and blue channels as source 1 and 2, invert them, set to subtract (offset 0 and scale 1) and create a new channel. This generally gives me the tones I'm looking for when trying to select fine variations in skin.
This channel can then be manipulated and tweaked to perfection: apply a levels to it to open up the shadows; I always grab the dodge and burn tool and plain paint brush and darken or lighten things as needed as well, right onto the channel before making a mask out it.

I end up with this weird looking but very useful masks with the predominantly yellows and reds of the skin selected by their luminosity.
Reply With Quote top
  #30  
Old 02-09-2013, 11:20 PM
Phaeton's Avatar
Phaeton Phaeton is offline
Member
 
Join Date: Aug 2009
Location: Melbourne, AUS
Posts: 30
Re: Matching a target & destination portrait image

You're correct Frank
By playing around with calculations, you can select other colour combinations. For instance by applying those setting below I managed to fairly easily mask out the vibrant yellows in her jacket.
I'm by no means an expert on calculations (it is a very powerful tool) or Photoshop, but through trial and error you'll find the combinations that work for you.
Cheers
Ed
Attached Images
File Type: jpg Screen-Shot3.24.jpg (95.0 KB, 21 views)
File Type: png Screen Shot 3.22.24 PM.png (56.0 KB, 20 views)
Reply With Quote top
Reply

  RetouchPRO > Technique > Photo Retouching


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
Resizing images for RetouchPRO jeaniesa Photo Retouching 19 11-05-2016 09:28 PM
Printed image much darker than on screen RCraig Photoshop Help 17 06-05-2013 01:44 PM
Dufaycolor - scanning, restoring, archiving e2b History, Conservation, and Repair 2 06-25-2012 05:38 AM
Photoshop: Image resizing vs image resampling santoro80 Software 9 09-06-2011 11:35 AM
Tutorial 05: Converting a Color Image to Black and White grayscale BW DannyRaphael Photo-Art 101 17 05-22-2011 05:55 PM


All times are GMT -6. The time now is 04:34 PM.


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