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extraction of girl

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Old 06-03-2006, 12:49 PM
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Daviskw Daviskw is offline
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Join Date: Apr 2006
Posts: 728
Hey..figured a way…lol

I decided to try desaturating the color of the hair. Then combining with a 50 % gray scale layer set to difference as Bart did I got a fair mask that with a little fix up here and there did not do too bad with the hair.

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Old 06-03-2006, 01:06 PM
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mistermonday mistermonday is offline
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Posts: 3,028
Flora & Bart, excellent masking work!!
Here is another approach to consider. In LAB, the colors Green and Red are mortal enemies in the A channel. This means they can be very quickly and easily separated with a Z curve or by applying the A channel to itself in Overlay Blend Mode a couple of times. When you convert the resulting image back to RGB, you end up with two very good masking candidates - the Red and the Green channels. A combination of both can help in the tough spots.
Regards, Murray
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File Type: jpg Slipchuk Girl MM RGB.jpg (82.5 KB, 14 views)
File Type: jpg Slipchuk Girl MM Red.jpg (86.9 KB, 16 views)
File Type: jpg Slipchuk Girl MM Green.jpg (85.8 KB, 21 views)
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Old 06-03-2006, 02:08 PM
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slipchuck slipchuck is offline
Join Date: Aug 2004
Location: Ontario, Canada
Posts: 38
thanks everyone so far.
As for answering the question "why not take another pic with a different background, it definately would be easier.
I wanted to work with this one, because I like tackling difficult jobs, as it teaches me more then anything.
I don't know everything about ps that is for sure.
A challenge is what I enjoy!

As for the color of a background it is going on, the answer is white.
My girlfriend does digital scrapbooking at
I enjoy the challenges she throws me, and 95% of the time I can figure it out without outside help
the other 5% I reach out for help from good people like yourselves!

I need to learn more about channel masking. I went to the book store and wrote down the direction to do this from Scott Kelby's channels book.
Unfortunately, it did not work.
seems like most of the books out there use a simple color background and make it look like a peice of cake.

If someone could point me to a book that is as good or better then scott's,
it would be much appreciated. (I am a visual learner so it needs to relatively easy to follow, simular to scott kelby's books)

so thanks again for the great work out there, now I have to try some of your technics


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Old 06-03-2006, 03:03 PM
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mistermonday mistermonday is offline
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Randy, you definitely want to check out Photoshop Masking and Compositing by Katrin Eismann.
Regards, Murray
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Old 06-03-2006, 09:34 PM
Mig Mig is offline
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Join Date: Aug 2001
Location: SF
Posts: 265
First off, just want to say what an incredible job some people did with the masking of the hair here - really excellent!

Randy, you asked about a book on channel stuff... the one I'd recommend is called Channel Chops. It's probably out of print, since it was written for a much earlier version of photoshop back in the late 90's. However, it still works for today's version. It's a very dry book, but that's the one I used to learn about channels and it's a fine book. You can pick it up on the net somewhere.

Good luck.

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