Go Back   Steve's Digicams Forums > Software > Editors (Photoshop, Vegas, Final Cut Pro, Kdenlive, etc.)

Reply
 
Thread Tools Search this Thread
Old Aug 28, 2010, 2:40 PM   #1
Senior Member
 
Join Date: Jul 2010
Location: England
Posts: 181
Default How to remove the background from a photo

Hi guys, I would like to remove the background in some of my car shots and put a plain BG behind. Is there a simple way? I have Gimp and Paint.net on my system.
Kenzie is offline   Reply With Quote
Sponsored Links
Old Aug 28, 2010, 3:18 PM   #2
Senior Member
 
Bynx's Avatar
 
Join Date: Jun 2007
Posts: 8,584
Default

You have to close crop the auto then either cut and paste it onto another background. Or make it a selection and then inverse the selection and paste whatever background into the selected area.
Bynx is offline   Reply With Quote
Old Aug 29, 2010, 11:01 AM   #3
Senior Member
 
Join Date: Apr 2010
Posts: 584
Default

Quote:
Originally Posted by Kenzie View Post
Hi guys, I would like to remove the background in some of my car shots and put a plain BG behind. Is there a simple way? I have Gimp and Paint.net on my system.
There is no fully automatic way of doing this. The computer
can't discriminate between what you want to cut and what
you want to keep.

In Gimp: Layer:Transparency:Add Alpha Channel
and then use the Free-Select-Tool to select and cut an outline around
the subject. Once you have cleared a small gap around the subject,
select the subject, use Select:Invert to invert the selection and
then cut to remove the background. This will leave you with an image
with a transparent background which can be pasted over anything you
want to use as a new background.

This is a photo of a busker in Cork City:
http://pix.ie/corkpix/1650412

These show the same image after the above treatment, and
after the transparent image is pasted over a B&W copy of the
original.
Attached Images
  
corkpix is offline   Reply With Quote
Old Aug 29, 2010, 12:38 PM   #4
Senior Member
 
Bynx's Avatar
 
Join Date: Jun 2007
Posts: 8,584
Default

There are excellent plugins which allow you to do quite intricate masking. Mask Pro comes to mind. Separating people with flowing hair from backgrounds is relatively easy down to the last strand of hair. Its a bit of an effort but if you want something tricky done then you have to make that effort.

Corkpix why is the guitar strap and the rest of the leather sleeve omitted from your cropped area? In the final, the strap isnt noticeable but the brown leather has been made B&W.

Last edited by Bynx; Aug 29, 2010 at 12:41 PM.
Bynx is offline   Reply With Quote
Old Aug 29, 2010, 2:05 PM   #5
Senior Member
 
Join Date: Apr 2010
Posts: 584
Default

Quote:
Originally Posted by Bynx View Post
Corkpix why is the guitar strap and the rest of the leather sleeve omitted from your cropped area? In the final, the strap isnt noticeable but the brown leather has been made B&W.
Well spotted Bynx

Here is a fixed one:
Attached Images
 
corkpix is offline   Reply With Quote
Old Aug 29, 2010, 5:26 PM   #6
Senior Member
 
Bynx's Avatar
 
Join Date: Jun 2007
Posts: 8,584
Default

Good fix.
Bynx is offline   Reply With Quote
Old Sep 28, 2010, 7:57 AM   #7
Senior Member
 
Zuken's Avatar
 
Join Date: May 2009
Location: Cincinnati
Posts: 175
Default

Here is a good tutorial on how to usr the extract tool:

http://www.recipester.org/Recipe:Cha...oshop_29435345



And there are some other that use this technique plus alpha channel to get a really good extract.
__________________
Armando
PentaxK-x
Kit lens 18-55mm
Sigma 70-300mm f/4-5.6 DG Macro Autofocus
http://razzi.me/zuken

Last edited by Zuken; Sep 28, 2010 at 8:03 AM.
Zuken is offline   Reply With Quote
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 8:22 AM.