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Help making masks of hair?

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  #1  
Old 08-21-2005, 10:08 AM
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jasosmith jasosmith is offline
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Help making masks of hair?

I have tried a few times (using Dr Browns technique) to make a good mask of the bride in the foreground of this image so as to then add some colour to the background. I cant seem to make a good mask of the hair.

The blue channel seemed to have the most contrast so I used it as the basis for the mask. Using levels I dragged the shadow/highlight sliders in to bring up the contast between the figure in the foreground, and the background. I tried some dodging (highlights) and burning (shadows) to make the mask but still seem to get a lot of artefacts around the ringlets that ulitmately affect the selection.

Does anyone have a more effective way to create a mask in these situations.
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  #2  
Old 08-21-2005, 11:48 AM
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Craig Walters Craig Walters is offline
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there's a pretty good thread on hair here: http://www.retouchpro.com/forums/photo-compositing/10743-hair-hell.html

Craig
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Old 08-21-2005, 12:59 PM
Cassidy Cassidy is offline
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There was an excellent tutorial on the adobe site maybe 18 months ago, cannot find it personally, but it managed to mask hair using the highpass filter. Unfortunately I cannot recall the details specifically.
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Old 08-21-2005, 01:04 PM
Cassidy Cassidy is offline
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Not the same tutorial but maybe try this http://studio.adobe.com/us/tips/tip....phs8kbhairmask
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Old 08-21-2005, 01:25 PM
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Cameraken Cameraken is offline
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Hi

It sound like your technique is not the problem. You can only get a perfect mask from a perfect image.

Since you tried the blue channel I tried the Red.

Fortunately if you just want to add colour to the background then the mask does not need to be perfect.

Ken
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File Type: jpg Ken_kim-water copy2.jpg (85.7 KB, 95 views)
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  #6  
Old 08-21-2005, 01:40 PM
Cassidy Cassidy is offline
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Just with a little fiddle, this is different, using a layer copy with screen, the subject already looks superimposed over the background, rather unaturally
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Old 08-21-2005, 03:33 PM
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Nice, Ken, but I hope someone will cover up the bra that's peeping through.. LOL
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Old 08-21-2005, 03:58 PM
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Thanks Swampy
I also fixed her shoulder.
That’s the great thing about RP. Lots of eyes make a better job. And I was obviously looking in all the wrong places.

Ken
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Old 08-22-2005, 02:31 AM
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jasosmith jasosmith is offline
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Great job Ken

I think in hindsight my mistake was dragging the Levels sliders too far in which creates a high contast image with some loss of the fine detail. I will have another crack and see how I go.

Ken - I really like the make up job that you did. I have so far been unable to get such a smooth, uniform effect. Can you elaborate a little on your method.
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Old 08-22-2005, 06:28 AM
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Flora Flora is offline
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Too nice a picture not to try....

Ken,

Great job! ... It might be my monitor..but the front part of her hair look a tad green ....

jasosmith,

You might not like it since I didn't go for very strong changes .... I tried to keep the 'twilight' feeling of the original ....no strong contrast and muted colours...

P.S. ... corrected the 'showing' bra only after reading Swampy's post....

Oooppss ... forgot to post my mask based on the blue channel...
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File Type: jpg SNAP-0055.jpg (63.2 KB, 49 views)
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