Omnimaga

General Discussion => Art => Topic started by: Munchor on April 11, 2011, 04:40:25 pm

Title: Removing Background from Image
Post by: Munchor on April 11, 2011, 04:40:25 pm
I have a request guys, attached is an image I'd like the white part to be removed so that it is nothing (transparent) and it has no background so it will go fine in any colour.

Thanks, if you could also tell me how to do that :D

I tried a rubber in Paint.NET but it's hard to control it, even with anti-aliasing enabled.
Title: Re: Removing Background from Image
Post by: Juju on April 11, 2011, 04:46:39 pm
There :)

I used the GIMP to do that.

1. Right click on the layer in the layers box and add an alpha channel
2. With Ctrl+magic wand, you select the white parts
3. Delete button on the keyboard.

The job is done in no time.
Title: Re: Removing Background from Image
Post by: Jim Bauwens on April 11, 2011, 04:53:11 pm
Gimp is your friend!
I think its just something like Layer -> Transparency -> Color to alpha .

Edit: Ninja'd
Title: Re: Removing Background from Image
Post by: Juju on April 11, 2011, 05:21:25 pm
Gimp is your friend!
I think its just something like Layer -> Transparency -> Color to alpha .
That works too. In fact there's multiple ways to get the job done.
Title: Re: Removing Background from Image
Post by: willrandship on April 11, 2011, 05:53:21 pm
Yup. I would have used select by color, personally :P
Title: Re: Removing Background from Image
Post by: Runer112 on April 11, 2011, 06:00:34 pm
Optimized. ;D



Sorry, I just had to. It's a pretty epic optimization, though.
Title: Re: Removing Background from Image
Post by: ZippyDee on April 11, 2011, 06:06:05 pm
Lol you would do that, Runer112...
Title: Re: Removing Background from Image
Post by: willrandship on April 11, 2011, 06:17:10 pm
What did you do, reduce the color pallet? That would make the most sense to me. :P
Title: Re: Removing Background from Image
Post by: DJ Omnimaga on April 12, 2011, 01:40:23 am
On an off-topic note, do we still need to uninstall TiEmu to use GIMP and vice-versa? That was why I always stayed away from GIMP before, aside from the fact I disliked how everything were separate windows (I prefer everything in one window like Paint Shop Pro and Photofiltre Studio).
Title: Re: Removing Background from Image
Post by: Munchor on April 12, 2011, 03:38:04 am
Thanks guys! If I had Photoshop I could do this, but I uninstalled it.

On an off-topic note, do we still need to uninstall TiEmu to use GIMP and vice-versa? That was why I always stayed away from GIMP before, aside from the fact I disliked how everything were separate windows (I prefer everything in one window like Paint Shop Pro and Photofiltre Studio).

No idea, sorry.
Title: Re: Removing Background from Image
Post by: Jim Bauwens on April 12, 2011, 04:04:59 am
On an off-topic note, do we still need to uninstall TiEmu to use GIMP and vice-versa? That was why I always stayed away from GIMP before, ..

I have both gimp and TiEmu on my computer, so this isn't normal behavior. Both gimp and TiEmu use the gtk-toolkit (gtk was actually made for gimp). Maybe its because one of the programs was outdated, and used an older version of gtk. I think having the latest version of both should work (gimp and TiEmu).

Quote
..  aside from the fact I disliked how everything were separate windows (I prefer everything in one window like Paint Shop Pro and Photofiltre Studio).

The next version of gimp will be able to support single windows, but probably will have to wait still a while before its released, as they have a lack of developers.
Title: Re: Removing Background from Image
Post by: Munchor on April 12, 2011, 04:05:40 am
Yeah, I hate Ubuntu GIMP because of that, 2 or 3 windows :S
Title: Re: Removing Background from Image
Post by: Jim Bauwens on April 12, 2011, 04:29:56 am
Scout, since you are on Linux, it will be quite easy to get the development version of gimp (I don't think its that unstable).
Title: Re: Removing Background from Image
Post by: Munchor on April 12, 2011, 06:35:07 am
Scout, since you are on Linux, it will be quite easy to get the development version of gimp (I don't think its that unstable).

Thanks for the idea :)
Title: Re: Removing Background from Image
Post by: DJ Omnimaga on April 12, 2011, 03:30:30 pm
On an off-topic note, do we still need to uninstall TiEmu to use GIMP and vice-versa? That was why I always stayed away from GIMP before, ..

I have both gimp and TiEmu on my computer, so this isn't normal behavior. Both gimp and TiEmu use the gtk-toolkit (gtk was actually made for gimp). Maybe its because one of the programs was outdated, and used an older version of gtk. I think having the latest version of both should work (gimp and TiEmu).

Quote
..  aside from the fact I disliked how everything were separate windows (I prefer everything in one window like Paint Shop Pro and Photofiltre Studio).

The next version of gimp will be able to support single windows, but probably will have to wait still a while before its released, as they have a lack of developers.
I see. It's probably because back in the days both used different GTK libs (or related stuff) so they conflicted. I haven't tried since 2005 or so, though.

And thanks for the info. I guess I'll have to check out at one point in case they get devs.
Title: Re: Removing Background from Image
Post by: Darl181 on April 12, 2011, 06:32:09 pm
Paint.NET
If you use paint.net more than gimp, then...
press S four times, cycling through the selection types, to get the wand
hold ctrl and click the color you want to select
if it selects more than needed, turn down the bar on top ("tolerance") and try again
make the eraser really big and erase the selected parts (makes it transparent)
make big noise yay
Title: Re: Removing Background from Image
Post by: Munchor on April 13, 2011, 04:32:13 am
Paint.NET
If you use paint.net more than gimp, then...
press S four times, cycling through the selection types, to get the wand
hold ctrl and click the color you want to select
if it selects more than needed, turn down the bar on top ("tolerance") and try again
make the eraser really big and erase the selected parts (makes it transparent)
make big noise yay

Great explanation, thanks much, I'll do it from now on. I didn't find the 'Magic Wand' button at first though :( I got it now.