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Masking Help Needed

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  #1  
Old 02-09-2011, 09:51 AM
curtism curtism is offline
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Masking Help Needed

Can someone help me construct a mask so that I can use it to replace the background? I've tried each channel separately and in combination through Calculations without success. The lady would like a different background so that her hair will be more visible and aesthetically pleasing.

This is really an educational exercise for me. I only took the job so that I could better understand masking problems such as this.

Ideas? Suggestions? Links? Thanks in advance.


Curtis
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Old 02-09-2011, 09:52 AM
curtism curtism is offline
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Re: Masking Help Needed

Oops! Forgot photo.
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File Type: jpg 2011_0204-01.jpg (192.3 KB, 118 views)
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Old 02-09-2011, 10:39 AM
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Re: Masking Help Needed

Try using the quick mask tool on the hair, had a quick rough try and it worked ok

Palms
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Old 02-09-2011, 10:50 AM
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Re: Masking Help Needed

The biggest problem (at least for me!) was to find enough seperation between the hair and the background. So this is my attempt - still not happy with the hair outline though:

1. As the hair needed much seperation duplicated image and converted to LAB. Then used curves layer and played about until I got the best seperation from background.

2. Using a combination of tools including quick selection and a little painting in here and there made a mask.

3. Added the background to the original RGB and copied the mask over to this layer.

4. Mask refinement next and also used the levels command directly on the mask. Plus a small amount of Gaussian blur to the mask.

5. A little more painting on the mask layer in places.

I am still not happy with the hair and think that it may benefit to a little touch up here and there with a hair brush to make it more realistic.
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Old 02-09-2011, 11:26 AM
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amica999 amica999 is offline
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Re: Masking Help Needed

This was done with Topaz Remask 3 in 5 Minutes....

Not sure if you noticed, but you have a pattern problem on that pic too....So if adding a new background you'd either need to repeat the pattern on the bg or get rif of it on the lady :-)
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File Type: jpg 2011_0204-01_Mask1.jpg (36.7 KB, 44 views)

Last edited by amica999; 02-09-2011 at 11:29 AM. Reason: Added text
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Old 02-09-2011, 11:28 AM
curtism curtism is offline
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Re: Masking Help Needed

@ Tony W -- I ran into the same problem that you did. There's just not enough separation between the hair and the background. That's what my client is complaining about!

I hope that maybe someone will have an unconventional idea that might work.


Curtis
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Old 02-09-2011, 11:31 AM
curtism curtism is offline
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Re: Masking Help Needed

@ amica999 -- Thanks! I'll look into that program.

I knew about the pattern but figured that the main problem was masking the hair/background and, if I couldn't do that, there was no point in worrying about the pattern.

Curtis
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Old 02-09-2011, 11:35 AM
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Re: Masking Help Needed

Quote:
Originally Posted by curtism View Post
@ amica999 -- Thanks! I'll look into that program.

I knew about the pattern but figured that the main problem was masking the hair/background and, if I couldn't do that, there was no point in worrying about the pattern.

Curtis
They have a 30 days trial: http://www.topazlabs.com/downloads/index.php
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Old 02-09-2011, 11:47 AM
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Re: Masking Help Needed

I used the pen tool then a little brush work on the mask.

Butch
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File Type: jpg girl.jpg (97.0 KB, 72 views)
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Old 02-11-2011, 09:23 PM
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Talking Re: Masking Help Needed

Yes... Daviskw, I agree. What is needed here is good ol' fashioned hand work. Topaz and many other masking tools, only do what you could do yourself if you had a thorough command of all aspects of color and densities. It is not magic - despite their very good dog and ponies. I too would use a pen tool, create a mask with a feathered edge and rework the stray hairs with conventional brush, erase and cloning tools. Doing it this way, your final may not be actually accurate, but will look more natural and hopefully slip by unnoticed. Try creating a new channel, copy this grayscale image and paste it into it (I made this in about 10 minutes). Then select this mask with load selection (unless you named it - it will be Alpha 1) and then delete your background. You may need to do some additional fine-tuning and color matching, but again - a lot of this boils down to hand work.
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File Type: jpg MASK.jpg (19.6 KB, 19 views)
File Type: jpg GRAY_BACKGROUND.jpg (92.3 KB, 43 views)
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