[Gimp-user] Removing Background
On 30/09/2010 22:29, Beassweetpeas wrote: I have just got Gimp and want to remove backgrounds of images.On the video tutorials I have watched there is a box on the right hand side for choosing background. I dont have this although Im sure it was on when I installed it. I only have the Toolbox on the left hand side. Help What you want isn't removing the background, but extracting the foreground :-) And there is a tool for this next to the scissors tool (once your have a selection on th eforeground, your can invert it and strike delete to remove the background). I assume that the box on the RHS is the layer dialog, that let you choose which layers are displayed. But this requires to already have two distinct layers, one with your subject and one with the background. Thanks for your reply.Please could you give me a step by step idiots guide for doing this please! Many thanks! -- Beassweetpeas (via gimpusers.com) ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Removing Background
On 02/10/2010 16:04, Beassweetpeas wrote: What you want isn't removing the background, but extracting the foreground :-) And there is a tool for this next to the scissors tool (once your have a selection on th eforeground, your can invert it and strike delete to remove the background). I assume that the box on the RHS is the layer dialog, that let you choose which layers are displayed. But this requires to already have two distinct layers, one with your subject and one with the background. Thanks for your reply.Please could you give me a step by step idiots guide for doing this please! Many thanks! 1) add an alpha channel to the image (layers dialog, right click, add alpha channel) 2) use the foreground selection tool: http://docs.gimp.org/en/gimp-tool-foreground-select.html It has its own step-by-step indications at the bottom of the screen when it runs 3) invert selection, and hit the delete key. You'll be left with your foreground, everything else will be transparent. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] Removing Background
I have just got Gimp and want to remove backgrounds of images.On the video tutorials I have watched there is a box on the right hand side for choosing background. I dont have this although Im sure it was on when I installed it. I only have the Toolbox on the left hand side. Help -- Beassweetpeas (via gimpusers.com) ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Removing Background
On 30/09/2010 22:29, Beassweetpeas wrote: I have just got Gimp and want to remove backgrounds of images.On the video tutorials I have watched there is a box on the right hand side for choosing background. I dont have this although Im sure it was on when I installed it. I only have the Toolbox on the left hand side. Help What you want isn't removing the background, but extracting the foreground :-) And there is a tool for this next to the scissors tool (once your have a selection on th eforeground, your can invert it and strike delete to remove the background). I assume that the box on the RHS is the layer dialog, that let you choose which layers are displayed. But this requires to already have two distinct layers, one with your subject and one with the background. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] Removing background
Someone did a really nice tutorial on this issue recently and posted the url to this list. Of course I don't know where a searchable archive is so that does not help much does it? The tutorial is at http://www.gimp.org/~sjburges/color_to_alpha/color2alpha.html Do note that my tutorial works best for non-photographic images, but you can use it to get close with photographic ones and touch up what you need to afterwards. Its not in general an easy problem. There's not really a great tool for it yet in Gimp; this filter goes totally agressive and leaves no hint of the color to be removed. Happy GIMPing, Seth Burgess [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Games - play chess, backgammon, pool and more http://games.yahoo.com/ ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Removing background
On 2002-04-25 at 2057.01 -0700, Seth Burgess typed this mail: The tutorial is at http://www.gimp.org/~sjburges/color_to_alpha/color2alpha.html Do note that my tutorial works best for non-photographic images, but you can use it to get close with photographic ones and touch up what you need to afterwards. Its not in general an easy problem. There's not really a great tool for it yet in Gimp; this filter goes totally aggressive and leaves no hint of the color to be removed. i like this plug-in best on a selection. it removes the background and can anti-alias the edges nicely after you tweak the selection a bit. carol ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Removing background
On Thu, 2002-04-25 at 23:40, Carol Spears wrote: On 2002-04-25 at 2057.01 -0700, Seth Burgess typed this mail: The tutorial is at http://www.gimp.org/~sjburges/color_to_alpha/color2alpha.html Do note that my tutorial works best for non-photographic images, but you can use it to get close with photographic ones and touch up what you need to afterwards. Its not in general an easy problem. There's not really a great tool for it yet in Gimp; this filter goes totally aggressive and leaves no hint of the color to be removed. i like this plug-in best on a selection. it removes the background and can anti-alias the edges nicely after you tweak the selection a bit. Hmmm. I may try select by color and grow the selection by a couple of pixels and then color to alpha at least it won't freak out the rest of the image. Thanks for the tip Carol. Bret ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] Removing Background Tutorial
Since removing a background seems to becoming an FAQ, I whipped up a tutorial last night: http://www.gimp.org/~sjburges/color_to_alpha/color2alpha.html Happy GIMPing, Seth Burgess [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Tax Center - online filing with TurboTax http://taxes.yahoo.com/ ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
Re: [Gimp-user] Removing Background Tutorial
On Fri, 2002-04-12 at 21:12, Seth Burgess wrote: Since removing a background seems to becoming an FAQ, I whipped up a tutorial last night: http://www.gimp.org/~sjburges/color_to_alpha/color2alpha.html Happy GIMPing, Outstanding tutorial. I had no idea that you could drag a color like that. HUGE tip for me. Bret ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] removing background
Nikolai, How can I do with gimp to remove the purple color fully and convert the borders where the object is merging with the background into pixels that has Alpha values over yellow color instead of plain orange color ? Very nice description of a classic imaging problem. Luckily, this is precisely what the color to alpha plug-in was designed to handle. Filters | Color | Color To Alpha, select your purple color, let it run, and wholah· The major drawback is that it doesn't only operate on border pixels - it operates on every single pixel in the image (or current selection). This means: 1) If you have a real life background like from a photo, you probably don't have a solid color to remove 2) If your foreground has any component of the color you're trying to remove, that will be removed too. #2 is worked around by repainting under the image with the same color you just removed. For #1... you can keep selecting colors that don't get hit and re-running it, but my suggestion is to get it close and do the rest of the touchup by hand. Happy GIMPing, Seth Burgess [EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Tax Center - online filing with TurboTax http://taxes.yahoo.com/ ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
