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How much size upscale or ...
Forum: General questions
Last Post: Tetragram
5 hours ago
» Replies: 0
» Views: 41
scripts suddenly stopped ...
Forum: Gimp 2.8 questions
Last Post: dhugg
6 hours ago
» Replies: 9
» Views: 135
Python-fu plugin UI
Forum: Extending the GIMP
Last Post: Ofnuts
7 hours ago
» Replies: 3
» Views: 25
Python-fu path of the plu...
Forum: Scripting questions
Last Post: Davide_sd
9 hours ago
» Replies: 3
» Views: 82
Gimp Python-fu 2.7 to lau...
Forum: Extending the GIMP
Last Post: Ofnuts
9 hours ago
» Replies: 7
» Views: 294
Paint by Number
Forum: General questions
Last Post: chey53916
10 hours ago
» Replies: 0
» Views: 72
Divide circular ring to x...
Forum: General questions
Last Post: rich2005
Yesterday, 06:38 PM
» Replies: 3
» Views: 79
kind of paintbrush group ...
Forum: General questions
Last Post: denzjos
Yesterday, 04:12 PM
» Replies: 2
» Views: 92
V poor colour ptints
Forum: General questions
Last Post: rich2005
01-15-2019, 11:48 AM
» Replies: 1
» Views: 192
We eat spammers for break...
Forum: Gimp-Forum.net
Last Post: Ofnuts
01-15-2019, 10:28 AM
» Replies: 0
» Views: 40

  How much size upscale or size downscale before pixelation or degradation of image?
Posted by: Tetragram - 5 hours ago - Forum: General questions - No Replies

Hey guys, I have been reading around this subject, how much size upscale and size downscale can be done before significant pixelation and significant degradation of image, and haven't found many correlative answers, other than every software behaves different.

Specifically I'm thinking of an image with this qualities: - 23 megapixels camera resolution and 5520x4144 pixels .jpg - treated in Gimp and rendered in .png with alpha layers. After all the reading I did I settled on nohalo for upscale, and lohalo for downscaling. Sometimes I keep nohalo for downascaling as well. 

I'm transforming my images to 32 bit floating point precision with max resolution (1.000.000 ppi) in Gimp when first opened.

But the heart of the question is, how much upscale and downscale generally can be done to an image before it degrades or pixelates in Gimp?

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  Python-fu plugin UI
Posted by: Davide_sd - 8 hours ago - Forum: Extending the GIMP - Replies (3)

I have two questions regarding Python-fu plugin user interfaces.

1. Let say I am integrating two or more algorithms into my plugin. The user choose the algorithm with the PF_OPTION control. I would like the plugin user interface to update itself by hiding or making visible certain UI controls. Is it possible to achieve this behaviour with Python-fu? If not, is there any way to achieve something like this with any other tool?

2. An image is worth a thousand words. Instead of showing a PF_OPTION with a list of names trying to describe the output effect, is it possible to have a PF_OPTION showing a list of example pictures of the effects? I'm not interested in generating a preview!!!

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  Paint by Number
Posted by: chey53916 - 10 hours ago - Forum: General questions - No Replies

Hi everyone! I'm brand spanking new to GIMP (all photo editing software actually) but I downloaded it with one specific task in mind...to learn howt  o create my own detailed paint by number that I can print onto a canvas and paint myself.
Does anyone have the knowledge on how to go about this and the willingness to explain in detail what I would need to do?
Thanks in advance! Smile

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  Divide circular ring to x parts
Posted by: brandonw8715 - Yesterday, 03:47 PM - Forum: General questions - Replies (3)

Hey all,

I'm ultimately looking to cut out x percentage of a cicular ring and center it perfectly when I'm finished.

Embarrassingly I've spent hours trying to do this with no luck, and no relevant google searches that I could find either. How would one go about doing this?

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  kind of paintbrush group stuck
Posted by: denzjos - Yesterday, 10:52 AM - Forum: General questions - Replies (2)

If I choose a kind of brush group, I can't activate another kind of group brushes.
If I clic on the grey items on the menu, they do'nt react. There is also a menu on the bottom of the brushes but it is also unclear to me how to use it. 

Is it a bug or is there something I miss ? Thank you for your answer in advance.

Windows 10, Gimp 2.10.8


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  scripts suddenly stopped working
Posted by: dhugg - 01-15-2019, 07:04 PM - Forum: Gimp 2.8 questions - Replies (9)


about a week ago my plugins started acting funny.  some plugins (ex. duplicate to another image) give me an error when executed.   other plugins have disappeared altogether (ex.heal selection).  everything else seems to be working as it did before.

i made no updates to the software except to add artwork i was currently working on.   it just started suddenly..

i have attached the error screen i get when trying to run "duplicate to another image"  as well as a screenshot of my plugins folder.

i am running GIMP 2.8.22 on windows xp.

i have not tried a reinstall yet.     

thanks in advance for any help on this.

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  We eat spammers for breakfast
Posted by: Ofnuts - 01-15-2019, 10:28 AM - Forum: Gimp-Forum.net - No Replies

A quick tally of the (CET: Paris/Berlin) times at which spammers register on G-F.n:

00:    1
01:    2
02:    3
03:    9 **
04:   12 ***
05:   14 ****
06:   31 *********
07:   86 **************************
08:  160 **************************************************
09:  119 *************************************
10:   44 *************
11:   56 *****************
12:   50 ***************
13:   39 ************
14:   19 *****
15:    6 *
16:   15 ****
17:   18 *****
18:   23 *******
19:   10 ***
20:    4 *
21:    1
22:    0
23:    1

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  V poor colour ptints
Posted by: Nighteyes - 01-15-2019, 10:14 AM - Forum: General questions - Replies (1)

Hello, I am new to Linux and Gimp.
I am trying to print photos and although they seem ok in the program they come out with
poor contrast and de-saturated red, in fact rubbish.
I have printed the same pictures in windows using photoshop pro with no problem.
The printer is an epson P50 with epson premium glossy paper. All inks full.
Has anyone any ideas?

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  Sharpening text in a jpg image
Posted by: PAL Thai - 01-15-2019, 06:39 AM - Forum: Gimp 2.8 questions - Replies (1)

Hi!  I'm quite new to GIMP and would like to make use of its capabilities as follows:
I have a .jpg image of an outdoor sign  that when zoomed to 400% shows the white text of the sign quite blurred.  I am hoping to find the proper way to sharpen and whiten just the white text and leave everything else on the image as it is, i.e. slightly blurred.  I have attached the file in question so you can see for yourself what I am talking about.  The border and empty space surrounding the image must remain as seen so as to have the correct size for posting to a Yahoo! Page. Many thanks to those members who may help me out.

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  Ubuntu - how do I update "gimptool-2.0"?
Posted by: romansbookreport - 01-13-2019, 07:30 PM - Forum: Installation and usage - Replies (2)

Ubuntu 18.04.

I'm trying to Install BIMP. I managed in 16.04, but in 18.04 I've had a cascade of problems.

First I had errors. Then I read in the BIMP github repository that you now need Gimp version 2.10 or greater.

I did an apt-get remove with a --purge flag of my Gimp version 2.8.22, and installed Gimp 2.10 from the software center.

But the errors persisted.

It seems that my gimptool-2.0 is still on version 2.8.22, but I can't figure out how to upgrade it. I've searched for a while. Any help?


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