I notice that there are 2 new scaling algorithms. These are LoHalo and NoHalo. How exactly do these work? I've found nothing on the internet about them (for example academic papers on image scaling algorithms), so I assume that they are exclusive to the Gimp software, have been invented directly by Gimp's developers. So I'm hoping somebody on these forums can explain exactly what calculations it performs. For example, are they based on the Cubic algorithm? Or maybe based on a Sinc function? Or are they based on some kind of AI, that "sees" the image in the same way the human brain sees it, and so actually attempts to make a reasonable effort to scale the image based on what would look the most natural to the human brain?

Hello...

I need to draw some images for LCD screen used in embedded controller.
So I open gimp and set 128x64 pixels image and draw it.
The image on computer screen is perfect but when I upload to the embedded screen it's ugly as aspect ratio is wrong. So how to change aspect ratio for preview on computer to mimic that for embedded lcd? The LCD is 128 x 64 pixels but it's near square.
So I need to draw on 128x64 matrix but somehow squeze image from left and right on preview. Is that possible at all?

Thanks.

Hi everyone! I have a pretty big image (it's a logo) and its dimensions are 6900x2500. I am trying to shrink it down to a width of about 500 but it always comes out pixelated. Is there anyway to shrink this image without losing quality? Thank you very much!

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Hello GIMP gurus,


Is there a way to turn an image into indexed color mode with a custom palette while specifying a number of colors as well?

I want to say turn a full RGB image into let's say 8 colors (indexed) but not generate optimum palette but 8 colors from my palette of colors.

Quote:Currently,
the Cross-stitch turns image into indexed colors (number of colors specified by user).
Then it replaces each indexed color by a closest match DMC thread color.
This process isn't the optimal, since turning to indexed colors already does some conversion and then matching DMC colors does some more conversion to it's 2 conversions which could take us further from original.

I was thinking of using the indexed colors where you specify a palette which I could make that already contain the DMC thread colors. So that it's one conversion so it's better. But now the problem is GIMP doesn't allow you to specify number of colors when you specify a custom pallete.

Any ideas on how I could do this? reducing number of colors while using a custom palette?

Hey everyone, this is my first post here and I'm hoping for some advice.. Months ago I downloaded a t-shirt mock up template to post online, I have tried many tutorials written and on Youtube over months to try and figure out how to actually get the t-shirt to show up, I just cannot figure it out. I'm running out of ideas how to figure this out anymore so thought I'd ask here.. Any ideas or a direction to point me in would be much appreciated.

I have attatched a screenshot
   

New one. Purpose: showing a stack of things. Gimp layers, but this script was written to help me make drawings for a presentation on Docker images and their union/overlay file systems.

Assume you have an image with several layers like this:

   

   

   

Good day

I've created an artwork in Gimp and exported it as a .psd file. When I open the file in Photoshop I can't edit the text. 
How can I fix this? 

Kind Regards
Kariena

Hello,
Once I'm new here I'm not quite sure if it's the right place to post.
Well, I'm using Gimp 2.10.4 for Windows 10 and today I needed to fix a little detail on a file — I draw very simple comic strips and use GIMP to edit them, put fonts, screentone dots and lines and all that jazz. They're mostly black and white.
I did it and after that I noticed my comic seem to be with lighter colors, like brighter. The tone given by the dots, that should feel like dark gray were seeming to be light gray and the outline, typically black, was thinner.

You can see the comparison here:

To the right, the original image. To the left, the new one.
Notice the lines (like in the left shoulder and in the jersey of the character on the first panel) and less bold and the dots on the new one seem to make the image lighter than on the original one.

And they were both done with GIMP 2.10.4, in the same computer they have the same size, they have the same all. The original one was made on Tuesday. I opened it today to make some fixes and it was already like that. And I didn't make any changes or updates on my computer these days.
And although the .PNG images are enough to show it's not any visualization problem on my computer, I tried opening it on another computer (also Windows 10, GIMP 2.10.4) and it was the same.
I opened other files, I opened even the screentone dots files and all of them seem to have their profile changed.

This is so curious I'm even asking myself if a very illogical and unlikely thing would have something to do with it: I opened the files in different cities. The original one, I made back in my hometown where I'm living during the week for a temp job. The fix I made in the current town where I live and spend the weekends.

Can anyone guess the problem and help me?

I had Ofnuts Add on file for a couple years without problems.  My computer got messed up and I could not get the collections manager.  I even downloaded the Gimp 2.8.22 version.  That made no difference.  The program only puts Scripts  in the manager.  No matter what I do I can't make it work.  New scripts of the add on does not have the .ini
file that should go with the Manager  Suggestions   Please!!!!

Hi, I am trying out Gimp 2.10, and I am having a hard time editing my image's alpha channel. In Photoshop, adding textures or painting a texture in the alpha channel is really simple. Basically, for adding a texture, you would copy an image from another image and simply paste it in the alpha channel. With the other method, you can paint in the alpha channel directly. Here is an example...

How to use Texture Masks, and embed them in an Alpha Channel - UE4 tutorial

is this possible in Gimp 2.10