MESSAGE
| DATE | 2021-03-25 |
| FROM | From: =?utf-8?q?Zolt=C3=A1n_Kluik_via_gimp-user-list?=
|
| SUBJECT | Re: [Hangout - NYLXS] [Gimp-user] Change background colour with
|
Dear Gimp Users,
I did not give answer for my question till now, that's why it can
happened that I'm not explained precisely the problem. If this, then please
ask me for more information. Also the problem is that I couldn't attach
images to represent what is the problem.
So I kindly ask You to please try to support me.
Regards, Zoltan
Zoltán Kluik ezt írta (időpont: 2021. márc. 24.,
Sze, 0:15):
> Dear GIMP users,
>
> I would like to ask your help regarding removing background and change it
> to white.
> I'm dealing with coin pictures mainly medieval silver coins. I take the
> photo about coins with green / dark green background. In the past on Ubuntu
> I used the GIMP 2.8.16 version where I applied the foreground selection
> tool. Here I just simple rounded the coin, press enter and the program
> after some seconds selected my coin. I loved this method, because it takes
> only seconds to select the coin.
>
> Last year I have upgraded GIMP to version 2.10.22, but from this time I
> have a big problem with time consumption and also with the quality of the
> changing the background. Now in 2.10.22 I open a picture, using foreground
> selection tool, but in this version there is a motor feature where I can
> select Global- and Levin matting. I use both with iteration value 1. First
> Global is selected, coin is rounded, pressing enter, selecting the
> foreground with the mouse, again pressing enter. Here the problem is that
> under the coin where the green background’s colour was a little bit darker
> there are green dots. So after Global, I apply the Levin matting. With
> this the dots are deleted, good, but where it is not selected the coin,
> there the surface (mainly at the edge) is not the original, blurred or not
> as the original was. Here I can use the adding to background selection or
> adding to the background within extra zoom possibility to make sharper the
> edges. Finally after 10 minutes however it is the same result as in 2.8.16
> was 30 seconds and automatically.
>
> So what did I wrong or how I should do to make this process easier and
> faster as it was in the earlier version?
>
> Thank You in advance for Your advice!
>
> Zoltan
>
> Zoltán Kluik ezt írta (időpont: 2021. márc.
> 23., K 14:10):
>
>> Dear GIMP users,
>>
>> I would like to ask your help regarding removing background and change it
>> to white.
>> I'm dealing with coin pictures mainly medieval silver coins. I take the
>> photo about coins with green / dark green background. In the past on Ubuntu
>> I used the GIMP 2.8.16 version where I applied the foreground selection
>> tool. Here I just simple rounded the coin, press enter and the program
>> after some seconds selected my coin. I loved this method, because it takes
>> only seconds to select the coin.
>>
>> Last year I have upgraded GIMP to version 2.10.22, but from this time I
>> have a big problem with time consumption and also with the quality of the
>> changing the background. Now in 2.10.22 I open a picture, using foreground
>> selection tool, but in this version there is a motor feature where I can
>> select Global- and Levin matting. I use both with iteration value 1. First
>> Global is selected, coin is rounded, pressing enter, selecting the
>> foreground with the mouse, again pressing enter. Here the problem is that
>> under the coin where the green background’s colour was a little bit darker
>> there are green dots. So after Global, I apply the Levin matting. With
>> this the dots are deleted, good, but where it is not selected the coin,
>> there the surface (mainly at the edge) is not the original, blurred or not
>> as the original was. Here I can use the adding to background selection or
>> adding to the background within extra zoom possibility to make sharper the
>> edges. Finally after 10 minutes however it is the same result as in 2.8.16
>> was 30 seconds and automatically.
>>
>> So what did I wrong or how I should do to make this process easier and
>> faster as it was in the earlier version?
>>
>> Thank You in advance for Your advice!
>>
>
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