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Help! How can I extract from background.

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  #1  
Old 03-25-2012, 05:09 PM
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juls juls is offline
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Question Help! How can I extract from background.

Hello everyone. I have the following image (attached) in which I want to remove the glass object (number 1) from the green background and keep trasparency. I've tried using the "color range" (Select>ColorRange...) but I'm not getting good results, I'm also thinking in using paths but I would like to hear any advice first... how could this be done with good end results? Thanks for any advice/help you can give.

By the way, is encouraging to find a place like RetouchPro dedicated entirely to photoretouching.
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File Type: jpg DETAILS 15.jpg (85.6 KB, 58 views)
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  #2  
Old 03-26-2012, 04:46 AM
capice capice is offline
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Re: Help! How can I extract from background.

Did you try using the extracttool? I would use this: open your image and double click on the "background" name in your layers pallette. This will turn it into a layer. Open the extract tool: Image>Extract or Option/Alt+Cmd/Ctrl+X.
Take the marker tool and trace around the image you want to extract. Keep the marker 1/2 way on the image and 1/2 on the background. For solid areas use a small brush, for softer areas like the loose hair, use a larger brush. Now take the bucket tool and fill the area you want to keep.Click ok.
There will be some areas that have been accidently deleted. You can clean up the image using the eraser and the history brush. Select a small brush size and paint back the image. Now you can place the image onto any background you want.
Or the oldfashionway....select the channel with the most contrast, make a copy, use levels to pump up the contrast, use the magnetic lassotool to select...
I was wondering, do you want to select the background to save or do you want the glass object to be saved?
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Old 03-26-2012, 05:36 AM
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dataflow dataflow is offline
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Re: Help! How can I extract from background.

something like this
http://3ddataflow.com.au/stuff/1transp.png
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Old 03-27-2012, 04:40 AM
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juls juls is offline
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Thumbs up Re: Help! How can I extract from background.

Quote:
Originally Posted by capice View Post
Did you try using the extracttool? I would use this: open your image and double click on the "background" name in your layers pallette. This will turn it into a layer. Open the extract tool: Image>Extract or Option/Alt+Cmd/Ctrl+X.
Take the marker tool and trace around the image you want to extract. Keep the marker 1/2 way on the image and 1/2 on the background. For solid areas use a small brush, for softer areas like the loose hair, use a larger brush. Now take the bucket tool and fill the area you want to keep.Click ok.
There will be some areas that have been accidently deleted. You can clean up the image using the eraser and the history brush. Select a small brush size and paint back the image. Now you can place the image onto any background you want.
Or the oldfashionway....select the channel with the most contrast, make a copy, use levels to pump up the contrast, use the magnetic lassotool to select...
I was wondering, do you want to select the background to save or do you want the glass object to be saved?
First thanks for your reply. Yes I want to keep the number and the box but i want the box to be trasparent so that you do not see green but anything you put behind it. I'm using CS5 and did not find the extract tool at the end I used the color range tool and some masking to eliminate remains from the color range... maybe that's not the best way but I was in a hurry and that was what I had in hand... however now that I have a bit more time I'll take a more detailed look at your approach. Ill be posting my results. Thanks for your help.
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Old 03-27-2012, 04:50 AM
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juls juls is offline
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Re: Help! How can I extract from background.

That looks pretty good... what technique did you use? As i told to capice, at the end I used the color range tool and some masking to eliminate remains from the color range... maybe that's not the best way but I was in a hurry and that was what I had in hand... I'm always asking my self if there is a definitive way to work in photoshop although I get some good results in some works at the end I'm not sure if it was the right way to do it. I suppose that in photoshop there are many paths to get to the same point. Thanks for your example.
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Old 03-27-2012, 05:44 AM
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juls juls is offline
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Re: Help! How can I extract from background.

Here is the final image... not very accurate but getting close to what I was looking for... thanks for all your help. If anyone has any other advice/technique is welcome.
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File Type: jpg CRW_0012.jpg (83.7 KB, 40 views)
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  #7  
Old 03-27-2012, 05:56 AM
capice capice is offline
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Re: Help! How can I extract from background.

looks pretty good J...congrats
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