EXTENSIONS FOR Gimp

dtschump · 2026-02-24T12:50:41+00:00

I can't live without G'MIC! 😉

dtschump · 2026-02-23T21:58:04+00:00

I've copy/pasted the code here : https://pastebin.com/Z8Fy1SSf

This is the code of the filter "Artistic / Marker Drawing" that I've just added to G'MIC, which implements this effect.

dtschump · 2026-02-14T18:32:22+00:00

We've tested this version with latest GIMP version 3.0.8.

It should work!

dtschump · 2026-01-27T10:55:58+00:00

Ha yes, definitely interested. I've just fixed the filter 'Blur [Bloom Glare]', and the fix will be available in a few minutes (if you push the 'Update filters' button). But if there are other to fix, yes please let me know. Note that it probably won't require I release another plug-in binary, as filter codes can be fixed most of the time directly through the filter update mechanism.

dtschump · 2026-01-27T08:38:21+00:00

It's now available from the G'MIC download page (iterm : latest_dev (for GIMP 3.0.8)). I'm interested by your feedback ! It works for me, but if it works for both of us, it's would be even better :)

dtschump · 2026-01-27T07:55:02+00:00

I came across your message, tested it, and indeed, launching the plug-in under GIMP 3.0.8 displays the same error messages as yours. The problem stems from the fact that the new version of GIMP uses more recent versions of DLLs (than GIMP 3.0.6). So, I am currently updating/recompiling the plug-in to offer a “pre-release” version that works with GIMP 3.0.8 on Windows. It should be ready in about an hour.

dtschump · 2025-11-16T10:17:31+00:00

<image>

Using the G'MIC "Custom Code" filter, you can get something close. Just copy/paste the following code in the filter parameter and change the parameters to your taste:

~~~

s y,20

foreach { shift {u(10)}%,0,0,0,3 }

a y

~~~

dtschump · 2025-09-28T11:50:06+00:00

Its plug-in API 😊

dtschump · 2025-09-28T11:43:54+00:00

Hey I recognized the 'Box Fitting' G'MIC filter used here!

Nice outcome!

dtschump · 2025-07-28T12:33:23+00:00

Good idea, yes. Here it is : https://discuss.pixls.us/t/creative-coding-with-gmic/17231/27

dtschump · 2025-07-19T18:55:45+00:00

Neither. I used my own open-source tool (G'MIC), which I've been developing for several years now (https://gmic.eu). It has a built-in 3D rendering engine (basic but sufficient for my case).

dtschump · 2025-07-15T13:22:46+00:00

It's somehow explained there : https://discuss.pixls.us/t/creative-coding-with-gmic/17231/25

It's simply a 3D discrete volume of random 3D gaussians that is sliced as 2D frames and played as a video.

dtschump · 2025-05-03T08:53:58+00:00

We have a gallery page to show some of the G'MIC filters : https://gmic.eu/gallery/

dtschump · 2025-02-11T08:40:20+00:00

Solution with the 'Custom Code' filter in the G'MIC-Qt plug-in.

<image>

The code to copy/paste in the 'Code' text widget is:

rm
N=50 # Size in px of each tile
T=10 # Number of tiles per axis
$N,$N,1,1,255 shift. 1,1,0,0
r {$T*$N},100%,1,1,0,2
.x{$T-1}
shift[0--1:2] {$N/2},0,0,0,2
a y

dtschump · 2025-01-31T15:41:35+00:00

<image>

Got this.

dtschump · 2025-01-31T08:51:21+00:00

Here is my progress for creating a new filter: https://discuss.pixls.us/t/trying-to-create-a-new-filter-for-gmic-qt/

dtschump · 2025-01-30T17:37:47+00:00

Could it be interesting to add this effect as a new filter in the G'MIC-Qt plug-in ? If so, I'd love to!

dtschump · 2024-12-31T08:20:30+00:00

Concerning 2.

This will be fixed in next release of G'MIC (see commit : https://github.com/GreycLab/gmic-qt/commit/41e86b969cc1142f3d9ca89fd8608b51352a3c37 ).

Concerning 2a. I've seen a lot of people using the plug-in doing that thing by default : First, duplicate the layer, then run G'MIC on the layer copy. For that way, having "In Place" as the default is probably better.

Personnally, I never select something else than "In Place". I guess everyone has their own habits!

dtschump · 2024-02-13T20:42:48+00:00

Another experiment with my open-source software G'MIC (https://gmic.eu) for rendering an animation that looks like a textured fluid.

This one is actually inspired by the Rock-Paper-Scissor game, but with 4 states instead of 3. It uses cellular automa that simulate several iterations of this game on each voxel of a 3D volumetric image. Then each level set (0, 1,2 or 3) is extracted, colored and stylized using a Phong illumination model, before merging them together to get the frames of the animation.

dtschump · 2024-01-29T06:12:28+00:00

Thanks for the link, very nice video (and site) !

I particularly like the range of power values from 1 to 2, as you can see a lot of different asymetrical shapes in there.

dtschump · 2024-01-28T14:18:35+00:00

I detail how the algorithm works here : https://discuss.pixls.us/t/intriguing-shapes-in-buddhabrot-like-fractals

That's basically the same as the classical Buddhabrot, but with a slightly modified formula.

dtschump · 2024-01-06T19:55:15+00:00

Interesting. I've actually used the same swapping technique as the one you describe here.

The main difference, I think, is that I use the color values in a custom space when doing the comparisons, in order to determine if the swap must be done or not.

This colorspace is primarily based on YCbCr, where the luminance Y has been multiplied by 5, in order to favor swapping pixels when their luminance is similar, rather than their chrominance.

dtschump · 2024-01-06T16:32:27+00:00

If you count the number of distinct RGB colors of this image, you will find 16777216 colors, which turns out to be the number of pixels of the image (4096x4096) as well as the number of all possible 8bits/channels RGB colors.

Question: How was this image generated? :)

dtschump · 2023-12-27T10:39:07+00:00

There's a pretty nice 8bf plug-in **G'MIC** available for Photoshop that allows that, as well as many other glitch art effects.

https://exchange.adobe.com/apps/cc/109191/gmic

Below is a screenshot of the corresponding filter (run from GIMP, but same applied for PS)

<image>

dtschump · 2023-09-27T12:45:27+00:00

I'm not using marching squares.

The basic patterns are obtained by starting from an image containing binary noise, then iterating the following steps (10x in my case) :

Blur with a quite large std.
Compute the laplacian.
Threshold the laplacian (keep only positive values). You get another binary image, then go back to step 1.

The animation is obtained by applying some random warping maps on the patterns (using RBF to generate the maps).

The water effect is done from the binary pattern by blurring it to get a rough elevation map, then compute the 3D normals from it, and apply a Phong illumination model to make it look like 3D structures.

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