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Questions tagged [gimp]

For questions about programming the GNU Image Manipulation Program, including plug-ins. Remember to include appropriate tag(s) for the programming language in use. Questions about non-programming use are off-topic for Stack Overflow; consider asking on Super User or Graphic Design instead.

Gimp is an acronym for Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.

The core of GIMP is implemented in .

Plug-ins may be implemented in a wide choice of languages, including , and and .

Resources

Gimp programming tutorials

Books:

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Remove color with Fuzzy Select Tool (hard edge)

I have a Google Earth Image imported in Gimp and I want to remove the water from the image. I use the fuzzy select tool to mark all the water which I want to remove. But as I erase the water, a bit of the landside also gets erased. Is there a…
user2035598
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Creating GIMP interface plugins

So basically I'm looking for a way to write a GIMP plugin in Python that would create some additional user interface elements and allow me to add some functionality on top of what the GIMP has. Question(s) are: Is this even possible? If yes then…
luke1985
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gimp - creating layers 2d list

Hello I am trying to convert a bunch of layers ( drawables + masks ) into a 2d list for random access using list-ref. I have failed and I cant see where I am going wrong. The cmyk-list contains garbage. All drawables have been tested with this…
user3103574
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Creating an image whith GIMP hiding another image unless we add a color filter in real life

The idea is like the inverse of Ishihara test (http://www.colour-blindness.com/colour-blindness-tests/ishihara-colour-test-plates/). I want to create with GIMP an image that showing something and then if I add a color layer, for exemple green…
Jeff86
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definition/resolution image GIMP

i have a naive question about image definition resolution and dimension on GIMP. If we take this example : 1)sensor: 4000x3000 =12 000 000 pixels (image definition) resolution : 300 ppp (dpi) Image dimension will be : 3000/300 x 4000/300 = 10 x…
Anass
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Inkscape Can you export the drawing to png file format but exclude the alpha channel

I have seen references to setting the drawings background alpha to FF before export. The file exported still has alpha data in it. I'd like this since Xcode does not like png icon assets with an alpha channel it.
art
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How to create an image from font style

I need to create multiple images for each and every character of a specific font. For instance, I want to create separate images of size say 32x32 for all characters of english alphabet with Times New Roman, Arial, Sans, etc. So I get 26 images for…
vanangamudi
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put partly transpared photo on top of panorama

What is it nessesary to do if I want to see just black edges from background image in image placed on top? Here in the picture is what I want to create. You can see there are edges from background panorama mountains in picture on top. Any ideas,…
Petr Bečka
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Gimp python plugins debugging with Winpdb trouble

I want to debug some script and I followed Omid Raha suggestion from this post Writing gimp plugins in python on windows- how do i debug? where is the output?. The system work so I am able to step into my code but this error happen when the…
Marco
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GIMP: Animated GIF not White

I exported a bunch of png files from R. The pictures are of a dataset that is 'spinning' against a white background. I then use GIMP to stitch them together and export an animated gif. Unfortunately, the gif has a yellowish color instead of a…
user3390169
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gimp script to square multiple images, maintaining aspect ratio and minimum dimensions

I have hundreds of jpgs of varying sizes (e.g. 2304px x 2323px). In gimp I can use a batch filter to change these to certain sizes, relative or absolute. But for some configurations I have to do the following manually, which for all the images takes…
Michael Millar
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GIMP - Image - How to keep image quality when reduce image size?

I have a image size 300x300mm resolution 72pixel/in. I want resize it to 120x120mm but keep the quality (by increase resolution?). First test, I increase its resolution to 180pixel/in then scale it to 120x120 >> image still degrade. Second test, I…
Anh-Tuan Mai
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Gimp index-colors vs ImageMagick in terms of image size?

I made a small image using imagemagick, this image has only 2 colors (alpha + some other color) so I want to turn in into index-color mode. Once I finish the image, I run the command convert file.png +dither -colors 2 file.png The resulting image…
TomTsagk
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GIMP Script-Fu Drop Shadow on Text?

I'm trying to create a Script-Fu script that at one point adds a drop-shadow. I use the script-fu-drop-shadow function as seen below (script-fu-drop-shadow image textDrawable 0 7 16 '(0 0 0) 1 FALSE) It works on normal layers, but not text layers…
Kjell
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Gimp - jagged pencil and brush strokes

I am using Gimp 2.8.14 on Ubuntu 14.04 and a Wacom tablet (Intuos 3 6x8). My problem is that I cannot make a smooth stroke even when I check the Smooth stroke in the Tool Options panel. When I do that the problem is less evident, but is still…
Leonardo Pinheiro
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