RetouchPRO

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


Photo Compositing Collage, montage, masking, selections, combining, etc.

Classic "stray hair" scenario

Reply
 
Thread Tools
  #1  
Old 07-03-2013, 05:04 PM
stedders's Avatar
stedders stedders is offline
Junior Member
 
Join Date: Feb 2011
Location: London, UK
Posts: 14
Classic "stray hair" scenario

I appreciate that there is no classic right or wrong about this, but I have a series of models to work on.

To remove the background colour and, inevitably, a lot of stray hairs (see example).
My basic approach is to use "Quick Selection" which covers around 90%;
then I tidy in "Refine Edges"; but I am still finding that even this does not solve the stray straggly hairs (particularly towards the bottom of the picture).

Any suggestions or tips?
Attached Images
File Type: png Screen Shot 2013-07-03 at 22.53.15_small.png (69.9 KB, 93 views)
Reply With Quote top
  #2  
Old 07-03-2013, 06:20 PM
kav kav is offline
Senior Member
 
Join Date: May 2009
Posts: 574
Re: Classic "stray hair" scenario

You're going to have some amount of extra work on that hair no matter what as the two aren't clearly separated. Some people have claimed to do okay with calculations and other methods. In the end I have found them to all require cleanup which is basically painting solid hair where you want it or adjusting to include some influence from the new background. It is possible to subtract both some alpha and some of the underlying color, but there is no clear path to doing that. Suck it up and do the paint work or you're more likely to end up stuck here.
Reply With Quote top
  #3  
Old 07-03-2013, 07:43 PM
Flashtones Flashtones is offline
Senior Member
 
Join Date: Apr 2009
Posts: 956
Re: Classic "stray hair" scenario

most of the color overlap is in the red channel. rather than starting with the quick select tool you might want to start with a dupe of the green or blue channel. run levels on it, clean it up with the brush in overlay mode, then use that as the basis of your layer mask, then go into refine mask from there.

it sounds more complicated than it is.

and you still might have to tweak your mask with a brush, depending on the background you'll be using.
Reply With Quote top
  #4  
Old 07-04-2013, 01:00 AM
Repairman's Avatar
Repairman Repairman is offline
Senior Member
 
Join Date: Dec 2010
Location: Bristol UK
Posts: 683
Re: Classic "stray hair" scenario

Any auto masking I have seen always leaves you a tidy up job. I prefer to hand paint strands with a one or two pixel brush on an overlay. This means you can change the hair colour easily (often a hilite hair on a dark background needs to be a dark hair on a light background) plus the background colour can be changed later if required. You can also use certain areas multiple times if the style allows repetition. For cropped or tighter hair styles you can use the smudge tool and drag the pixels away from the scalp in keeping with the overall stye. Match brush size to strand thickness. If a hair curls, follow the line to a natural conclusion beyond the scalp line rather than cropping it. Often I use three layers of different focus to simulate focus drop off front to back. Lastly, use this stage to edit the hair anyway - it is often better to remove flyaway hair. Good luck; hair work is tedious but can make or break a picture!

Last edited by Repairman; 07-04-2013 at 01:08 AM.
Reply With Quote top
  #5  
Old 07-04-2013, 06:23 PM
stedders's Avatar
stedders stedders is offline
Junior Member
 
Join Date: Feb 2011
Location: London, UK
Posts: 14
Re: Classic "stray hair" scenario

Thanks very much to everyone. The example I posted was only one of many pictures I have to work on.
Some useful tips there though.
I have a bit of time on this, so – can to an extent – experiment a bit to see what works best for me.

Many thanks
Reply With Quote top
Reply

  RetouchPRO > Technique > Photo Compositing


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
Weird scenario: Different File sizes in same jpg remake Software 2 09-17-2009 06:07 AM


All times are GMT -6. The time now is 07:01 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