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Photo Retouching "Improving" photos, post-production, correction, etc.

cut form background

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  #1  
Old 03-25-2009, 01:46 PM
jaroslav's Avatar
jaroslav jaroslav is offline
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cut form background

I found quite good method to cut object form background. Link -> http://www.photoshopdemos.com/tag/cut-out-a-background/

It's fast and nice, but there's one problem I cut model form the background, and i've got some pieces of old background between hair.

I don't know how to remove this..

I played with different values of rifne edge... ( select -> rifne edge... only in PS CS 3 )

but I did nothing...

Can U help me ?

thx

psd file : http://www.sendspace.com/file/bc5a72 ( 1,5 mb )
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File Type: jpg Untitled-2.jpg (66.9 KB, 83 views)
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  #2  
Old 03-25-2009, 03:05 PM
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igot2pman igot2pman is offline
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Re: cut form background

I always like how you post full PSD's... they makes things a lot easyer.

Make a copy of the layer and hide it. Use blend if on the original layer; Blend if: this layer: 44/127 (Alt+click to seperate sliders).

As you can see the face is also gone. Unhide the duplicate. then use a mask to hide the parts that are bad. Dont forget to mask the cheek and arm edges as they have some white. I masked the cheek at 800% slowly.

Hope it helps,
-Keven
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File Type: jpg new-KA-blend-if.jpg (95.5 KB, 46 views)
File Type: jpg new-KA-blend-if-ex.jpg (95.6 KB, 46 views)
File Type: jpg new-KA-screenshoot.jpg (71.7 KB, 48 views)
File Type: jpg new-KA.jpg (99.7 KB, 64 views)
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  #3  
Old 03-25-2009, 04:32 PM
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Flora Flora is offline
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Re: cut form background

jaroslav,

pity you didn't post the original version in addition to the link to your .PSD file ...

the following links are for two Tutorial I wrote on this topic.. the first is on the technique explained by igot2pman:

Using "Blend If" for Selections and Selective Corrections

The second is about completely different techniques which are dependent on the original background:

Masking difficult, flyaway Hair.

Last edited by Flora; 04-03-2009 at 05:35 AM. Reason: Adjusted Font size
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  #4  
Old 03-25-2009, 05:12 PM
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jaroslav jaroslav is offline
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Re: cut form background

original jpg - > http://www.sendspace.com/file/0ouxa4
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  #5  
Old 03-25-2009, 06:19 PM
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Flora Flora is offline
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Re: cut form background

Used the White Background technique described in the 2nd Tutorial. (Attachment1)

Once "cut/isolated" the subject, even if in no conventional way, you can actually use whatever background you like.. (Attachment 2 + 3)
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File Type: jpg F_org.jpg (199.2 KB, 51 views)
File Type: jpg 2009-Mar-0041.jpg (199.1 KB, 57 views)
File Type: jpg 2009-Mar-0042.jpg (199.1 KB, 56 views)

Last edited by Flora; 03-25-2009 at 07:16 PM.
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  #6  
Old 03-27-2009, 09:58 AM
jvr jvr is offline
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Re: cut form background

Flora,

Do you know a way to "merge" the Normal and both Multiply layers to keep the subject in just one transparent layer?

I'm always afraid to give clients the retouch in more than one layer. Then can do a mess with it.
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  #7  
Old 03-27-2009, 11:12 AM
Tareq Tareq is offline
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Re: cut form background

I should learn about selection, because i have many shots of my daughter on plain color background but many times it is difficult to isolate them perfectly from background.
So my question is, should i use certain color of background so then i can cut them of on photoshop easily without having problems with hair and clothes and edges?
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  #8  
Old 03-27-2009, 02:34 PM
jvr jvr is offline
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Re: cut form background

Tareq,

You can use Blue or Green backgrounds and use the second tutorial that Flora posted here above "Masking difficult, flyaway Hair". Check it out. It's pretty easy.
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  #9  
Old 03-29-2009, 10:06 AM
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jaroslav jaroslav is offline
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Re: cut form background

Quote:
Originally Posted by jvr View Post
Flora,

Do you know a way to "merge" the Normal and both Multiply layers to keep the subject in just one transparent layer?

I'm always afraid to give clients the retouch in more than one layer. Then can do a mess with it.
How about selcet top layer and go to edit > copy merged ?
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  #10  
Old 03-29-2009, 12:11 PM
jvr jvr is offline
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Re: cut form background

No. When you use "normal" and "multiply" layers, merging doesn't work fine.
The white borders you remove with the use of "multiply", are back when you merge the layers.
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