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FORUMS Post Processing, Marketing & Presenting Photos RAW, Post Processing & Printing 
Thread started 12 Sep 2013 (Thursday) 09:40
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Help with Refine Edge in PS

 
ready2go
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Sep 12, 2013 09:40 |  #1

Can't seem to isolate the model. Tried quick select and other selection tools, but no dice. Any recommendations? If anyone wants to give it a shot, please feel free:

https://www.dropbox.co​m …329hk7dmuefu/IM​G_0741.tif (external link)


6D, 70D, Pancake lens, Nifty Fifty, Sigma 50 Art, Canon 135LL IS, YN560 III

  
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jra
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Sep 12, 2013 10:32 |  #2

My recommendation would be to use the lasso tool at %400 magnification (it really helps to have a tablet for this) and simply make a manual selection. That's always my fall back when nothing else seems to work. The hair can be a little trickier but with some patience and experimentation with contrast and color channels, it should be able to be isolated pretty well.




  
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PhotosGuy
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Sep 12, 2013 10:45 |  #3

Deke McClelland Video: The Essential Approach to Masking in Photoshop (external link)

Another Layer Mask video: http://www.youtube.com​/watch?v=a7J4GEKpgds (external link)

Perfect Layers 2: (external link) A free stand alone app, or plug-in for Lightroom & Aperture.


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PixelMagic
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Sep 12, 2013 12:46 |  #4

Mastering the selection tools in Photoshop can take years since it takes time to understand how each tool works, and to instinctively understand which selection tool (or combination of tools) would work best on a particular image.

Personally I'd suggest using the Pen tool to select the subject's torso and saving that selection as an alpha channel. Then use the Quick Selection tool to select her hair, save tha selection as an alpha channel, then combine the two selections into one.

But since you appear to be interested in using the Quick Select tool only I made an attempt using just that one tool. I made an initial rough selection of her face and body, then used the Refine Edge tool to calibrate the selection and saved it as an alpha channel. I then repeated the process on her hair. The reason for making two selections is that the sliders in the Refine Edge dialog box like Radius and Decontaminate Colors need to be applied at different strengths based on the contrast between portions of the subject and the original background. Since the hair is close in color/luminance to the background it needs a separate extraction. Note that my mask retains the flyaway hairs; they are just obscured by the color of the new background.

With the actual raw file I could have made an even better extraction since there are adjustments that can be done in the raw file that aren't as easily done on a TIFF file.

EXTRACTION

IMAGE: http://i.imgur.com/YRkENfh.jpg

ORIGINAL
IMAGE: http://i.imgur.com/ZPhVcJE.jpg

ready2go wrote in post #16290700 (external link)
Can't seem to isolate the model. Tried quick select and other selection tools, but no dice. Any recommendations? If anyone wants to give it a shot, please feel free:

https://www.dropbox.co​m …329hk7dmuefu/IM​G_0741.tif (external link)


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PixelMagic
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Sep 12, 2013 13:08 |  #5

An even better result using the Soft Light blend mode. All you'd have to do now is crop away the light on the right and the visible portion of the ceiling.

IMAGE: http://i.imgur.com/JiGiWod.jpg

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nittaya
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Sep 12, 2013 13:19 |  #6

PixelMagic wrote in post #16291106 (external link)
Mastering the selection tools in Photoshop can take years since it takes time to understand how each tool works, and to instinctively understand which selection tool (or combination of tools) would work best on a particular image.

Personally I'd suggest using the Pen tool to select the subject's torso and saving that selection as an alpha channel. Then use the Quick Selection tool to select her hair, save tha selection as an alpha channel, then combine the two selections into one.

But since you appear to be interested in using the Quick Select tool only I made an attempt using just that one tool. I made an initial rough selection of her face and body, then used the Refine Edge tool to calibrate the selection and saved it as an alpha channel. I then repeated the process on her hair. The reason for making two selections is that the sliders in the Refine Edge dialog box like Radius and Decontaminate Colors need to be applied at different strengths based on the contrast between portions of the subject and the original background. Since the hair is close in color/luminance to the background it needs a separate extraction. Note that my mask retains the flyaway hairs; they are just obscured by the color of the new background.

With the actual raw file I could have made an even better extraction since there are adjustments that can be done in the raw file that aren't as easily done on a TIFF file.

VERY NICE PIECE OF WORK .




  
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Spike44
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Sep 12, 2013 14:33 |  #7

Very nice work PM....the light line on her right arm down to her elbow was also a bit of a challenge and needs separate attention.
I was able to get a good clean selection using Quick Select Tool but the refine edge failed me on the hair - right, shadow side. I used black as my fill background so I could get a better view of how clean the selection was....the gray from the orig showed through too much. Could you post your selection with black BG also? (let's see you do the blend mode trick with black :) )




  
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PixelMagic
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Sep 12, 2013 15:32 |  #8

Thanks guys.
The right forearm is why I suggested using the Pen tool for her torso. The rim lighting blew out a small portion of her forearm so the QS tool doesn't detect anything in that area but that's not a problem for the Pen tool.

Here's my selection on a black background; there's some color fringing on the right side of her hair but I imagine that could be resolved.

I don't think Blend mode math would not allow the use of Soft Light on a black background.

IMAGE: http://i.imgur.com/UtVqTNQ.jpg

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ready2go
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Sep 12, 2013 16:01 |  #9

Thanks guys! I wish I had more time to dedicate to PS. I was able to get something workable using quick selection(after 5 times). Luckily this is for a friend =)

My final:
https://www.dropbox.co​m …mrjr/1385002_60​124554.jpg (external link)


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PixelMagic
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Sep 12, 2013 16:14 |  #10

I didn't download it to my computer so it could be a color space problem but the skin tones appear a bit green on my screen.

You did a very good job on the extraction but in my opinion the replacement background is very distracting. I'd also open up the shadows a bit on the right side of her face.

ready2go wrote in post #16291646 (external link)
Thanks guys! I wish I had more time to dedicate to PS. I was able to get something workable using quick selection(after 5 times). Luckily this is for a friend =)

My final:
https://www.dropbox.co​m …mrjr/1385002_60​124554.jpg (external link)


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nittaya
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Sep 13, 2013 05:45 |  #11

PixelMagic wrote in post #16291567 (external link)
Thanks guys.
The right forearm is why I suggested using the Pen tool for her torso. The rim lighting blew out a small portion of her forearm so the QS tool doesn't detect anything in that area but that's not a problem for the Pen tool.

Here's my selection on a black background; there's some color fringing on the right side of her hair but I imagine that could be resolved.

I don't think Blend mode math would not allow the use of Soft Light on a black background.

i think this was an excellent tutorial by you. i tried it on this picture but used quick selection tool for making masks . it might not be that good , but considering i am just a
a newbie when it comes to masking , the result i get to me are very impressive. so the trick is using more than one masks .THANKS FOR THE NICE TUTORIAL.


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Help with Refine Edge in PS
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