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Questions tagged [gimp]

GIMP (GNU Image Manipulation Program) is an open source, and freely distributed piece of software used for photo manipulation and retouching.

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What are the techniques to sharpening text in colored paper?

I need to sharpen this image: Using online sharpening tool, this is the best I have: It doesn't improve much, so I decide to do it manually. Following this tutorial, I use the Sharpen (Unsharp Mask) ...
Ooker's user avatar
  • 409
1 vote
1 answer
116 views

Correct overexposed photo using other photos

I photographed my parents' house at various stages of painting it and then used Hugin to align them ("No exposure correction, low dynamic range") for the purpose of making a slideshow. The ...
bongbang's user avatar
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4 votes
2 answers
215 views

Removing a color gradient from the Crab nebula in GIMP

I'm new to this stack. I have a question about astrophotography. A while ago I took pictures of the crab nebula with R, G and B filters with a 120cm telescope. These pictures have already been ...
theWrongAlice's user avatar
1 vote
1 answer
121 views

How can I remove blown-out sun glare reflected from a sign?

I've been asked to fix up the banner in this photo to remove the glare. I've played around with some of the answers I've found on the internet already, but haven't had any luck. Does anyone have any ...
Ace Taylor's user avatar
2 votes
3 answers
605 views

best Gimp blur filter for popcorn ceiling

What would be best Gimp blur filter to make popcorn ceiling less noticeable? I am using Gimp currently, used Photoshop/Lightroom years ago, but don't have access to a PC now. Definitely not a ...
Tagar's user avatar
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0 answers
75 views

Why am I losing the color profile when GIMP invokes Darktable?

When gimp 2.10.32 opens a raw file using darktable 4.0.1 via the plugins/file-darktable/file-darktable plugin, my image has the color profile assigned to it that I want. (I have a preset for the ...
Gary Aitken's user avatar
1 vote
1 answer
118 views

Determine exact in-camera processing done by Nikon Z6 when saving JPEGs

Is it possible? If I look at the complete EXIF data (well, I assume it is complete — on Linux command-line, I run exif DSC_xxxx.JPG), it shows things like: ...
Cal-linux's user avatar
  • 219
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0 answers
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Difference Blend in PS different from that in Gimp

I've developed a workflow supporting diffuse/specular separation for isolating specular information from cross-polarized and co-polarized photography, this used in photogrammetry. I started this in ...
Benjamin von Cramon's user avatar
1 vote
1 answer
80 views

Leica Q2M JPG files cannot be read by any of my Ubuntu (21.10) image software

I very recently picked up a Leica Q2M, and on my first attempt to read JPG files recorded on its storage media I've found that nothing on my Ubuntu 21.10 installation can read the files. I've tried <...
Pointy's user avatar
  • 197
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2 answers
486 views

How to fix underexposed flash-lit portrait in darktable (and perhaps also in gimp), leaving background dark?

Shot a portrait with flash + umbrella (indoors at night, some artifial ambient light) - but it's underexposed. In my first go at darktable I managed to properly expose the whole photo within 2 seconds ...
nutty about natty's user avatar
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1 answer
999 views

Combine Two Images and Make One Semi-Transparent / Opaque in The GIMP

I have two existing images that are identical in size and I would like to combine them, so that I can see a "faded" version of one image on top of the other. In other words, I want to make &...
Gregory Opera's user avatar
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2 answers
1k views

How to tile the same image repeatedly in Gimp?

How to tile a 1:1 image 3 times horizontally, side-by-side 1:3, without having to manually calculate and type in 3 times the width of the original as a new file? And without being constrained to ...
user610620's user avatar
2 votes
1 answer
873 views

GIMP: How to apply the same processing to multiple photos

In Photoshop, the same sequence of processing on layers of each image in a batch can be applied to those multiple images by using File > Automate > Batch > Action then select the group of ...
user610620's user avatar
3 votes
1 answer
2k views

How to edit more than 8 bits (10, 16 bits) of color in GIMP?

I've found out GIMP supports 16 bits color editing, e.g. here Can I use 10bit effectively today and if yes how?: Software support for editing in 16- and 32-bit color is good: ...
Martian2020's user avatar
3 votes
2 answers
2k views

GIMP's color profile options on file opening and on export

GIMP's operations with color profiles seem hard to grasp. I've studied a question describing experience similar to mine here: GIMP. TIFF. Color profile sRGB IEC61966-2.1 and embedded color profile ...
Anton K's user avatar
  • 131
2 votes
1 answer
206 views

Colour shift in photographs between applications? (profile included)

I have Asus ProArt PA329 monitor. I made a full system reinstallation a few months ago, had not really worked photos for a while due to lockdown and other things etc. More recently, I re-installed the ...
TTT's user avatar
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1 vote
2 answers
885 views

Remove Vignetting from thousands of images

I am doing historical research for which the only document source is microfilm typically created in the 1950s by technicians who did not understand the characteristics of this then new technology. ...
James Cobban's user avatar
2 votes
1 answer
452 views

How to process 360 photos without creating seam?

I shoot 360 photos with a 360 camera that takes the entire scene with two wide-angle lenses that are stitched together to obtain 360 panoramas. I use Rawtherapee for post-processing and colour ...
NorthSon's user avatar
  • 131
2 votes
3 answers
2k views

How do I create an infinite picture-in-picture effect?

I want to take a picture of an empty frame on a wall, then digitally edit that photo into itself infinite times. So the result should be a picture of a frame, which contains the same picture, which ...
MaxD's user avatar
  • 221
3 votes
1 answer
4k views

Remove sun glare using GIMP

How can the glare from the sun in the upper right part of this photo be removed using Gimp?
Al Lelopath's user avatar
1 vote
1 answer
498 views

Can you match color levels of semi-overlapping layers in GIMP using a single pixel color?

I am putting together fluorescent images taken on a microscope. I have taken sequential images that overlap for anywhere between 20 - 50 pixels at the edges. I have set up grids so that I have perfect ...
David's user avatar
  • 11
1 vote
2 answers
129 views

How will the image be displayed/interpreted if I publish a JPEG online with no embedded color profile?

How will the image be displayed/interpreted if I publish a JPEG online with no embedded color profile? I use GIMP 2.10 on Windows 10 Home 64-bit.
Konskoo's user avatar
  • 85
1 vote
1 answer
774 views

Is there a better way to "smooth out" CMYK halftones other than just blurring?

I'm trying to get the best possible scan of a CD cover (although this would apply to any print media using CMYK halftoning). With the highest setting on my scanner (3200dpi) I quickly run into the DPI ...
Shelvacu's user avatar
  • 111
0 votes
2 answers
239 views

Colorize orthochromatic print with Gimp

I've just started working with Gimp, and I would eventually like to try my hand at colorization. One photo I would like to do is of my father and mother from circa 1943. He is in his uniform, and his ...
Pat B.'s user avatar
  • 109
7 votes
2 answers
3k views

How to digitally remove reflections on vertical glass fronts?

As you can see, the reflections impair the visibility of the objects behind the glass quite a lot. This image is fairly old (2009), so that I can't revisit the site for a better shot. Software: ...
Neppomuk's user avatar
  • 608
1 vote
0 answers
81 views

Gimp insists on changing Epson SC-P800 black to photo black on plain paper

I'm trying to print an image on plain paper with an Epson SC-P800 printer using GIMP 2.10 on MacOS 10.14.6 (Mojave). I can find no setting in the print or page-setup dialogs to set which black ink is ...
NetFool's user avatar
  • 111
1 vote
2 answers
3k views

GIMP. TIFF. Color profile sRGB IEC61966-2.1 and embedded color profile GIMP - built-in sRGB

Friend gave me photos. TIFF with LZW compression. Parks, people walking, relaxing. People are doing fitness. I want to crop these TIFFs, resize. Then I will export it to JPEG. Then I will post these ...
Konskoo's user avatar
  • 85
0 votes
1 answer
89 views

Problems creating a photo album: which is the expected size and resolution?

First of all, sorry for the basic question: I don't know much about photography and I want to create a photo album. I have already created some in the past using the software provided by the company ...
xavier's user avatar
  • 101
2 votes
2 answers
2k views

Why does GIMP increase the size of exported JPEG files?

I'm using GIMP to edit some vacation pictures (JPEG files) taken with a rather old digital camera. Lacking a professional background, I just went about by trial and error and ended up adjusting the ...
david's user avatar
  • 121
-1 votes
2 answers
209 views

Do curves in GIMP have "targeted adjustments" like in Photoshop?

Is there a targeted adjustment feature in the curves settings of GIMP. To set colour curves. Like in Photoshop?
Arjun VK's user avatar
3 votes
4 answers
929 views

GIMP: Why can I set a higher quality than original image in the "Export Image as JPEG" dialog?

After having read the GIMP Export Image as JPEG section, I still have one understanding issue: Why am I able to select a higher quality value than the one from original image in the export dialog? For ...
bela53's user avatar
  • 133
4 votes
2 answers
3k views

How to apply identical color curves to many pictures in GIMP?

I have a few thousand images that I want to apply the exact same color curve adjustment to. Is there a way to do this in GIMP? I found this How can I get a uniform white balance on a batch of JPEG ...
John Cunningham's user avatar
4 votes
2 answers
362 views

Remove low-frequency background

I have a series of images which are vignetted - an artefact which I want to reduce from the images (see the smoothed and down-sampled image). My approach is to subtract a heavily-smoothed version ...
planetmaker's user avatar
2 votes
1 answer
103 views

Crop multiple pieces from a photo and save with sequential numbers

I am looking for a way to draw multiple boxes around parts of an image at one time (sort of a ctrl+select) then save each box as a separate image. I usually use GIMP for photo editing, but any free ...
tjr's user avatar
  • 131
2 votes
2 answers
174 views

How to imitate the blur on subject outlines after removal of background using GIMP?

Using GIMP I masked out an unwanted person who was situated in the background of my image. This person was partially concealed by my subject. I used the path tool to trace the outlines of my subject ...
Paul's user avatar
  • 21
3 votes
1 answer
1k views

Workflow and colorspaces in Darktable and GIMP for printing images?

I have started to print out some of my photos, but this has lead me down a path where I do not know if I am doing things correctly, and are asked questions I do not know the answers to. Here goes: I ...
Sitron_NO's user avatar
  • 157
1 vote
1 answer
371 views

Gimp perspective tool is not actually transforming

I've uploaded a screenshot below to illustrate the problem. I've dragged a jpeg into Gimp, clicked on the perspective tool, and then attempted to use it...but as you can see, it's not actually ...
Vyvyan Mar's user avatar
0 votes
1 answer
132 views

Simpler way to selected photo from paper in gimp?

When I scan photos on my printer, sometimes it is a dumb printer and does not take out the background, especially when there is a lot of white. How would I do this on my example photo other than ...
Mark Deven's user avatar
1 vote
1 answer
356 views

Can I salvage overexposed images accidentally taken in manual mode?

I have a question. My wife used our camera and left the setting on Manual, which I didn't realize when I was going out to take pictures yesterday in the bright sun. We had some really great pictures, ...
Michael Rini's user avatar
-1 votes
1 answer
31 views

Bucket tool based on lower layer in GIMP [closed]

In GIMP, I want to use the bucket tool to fill in certain areas of my image, but I'd like to do it on an upper layer rather than directly on image. I think I need to tweak some of the layer settings ...
puterguy01's user avatar
0 votes
2 answers
11k views

GIMP Quality .jpg export - what is the best set up? [duplicate]

please could you tell what is the best common quality export value for .jpg image export in the GIMP? For example I set up the 100% for .jpg and for example for image 1,5 MB I will get the 5,2 MB or ...
Heron's user avatar
  • 217
1 vote
2 answers
3k views

Is GIMP allow to add or change geo-tag localization in Exif data? Is there any plugin for that?

do you know is it possible to change or add geo-tag localization in Exif data of .JPG photos? Is there any plugin for that? I cannot find any clear answer is it possible from the graphical application ...
Heron's user avatar
  • 217
1 vote
2 answers
1k views

How to set color levels (or white point level) on all layers of an image using gimp?

I have an image with multiple layers, and I have to set the same white point on all pf them. how can I do it without selecting each layer at once?
Marco's user avatar
  • 111
2 votes
4 answers
309 views

What technical terms or rules of thumb do I need to understand for a black and white conversion of a photo? [duplicate]

Below is a photo taken by me: Below is a photo I found on internet: There are some visible differences between the two. One is dull and the other has visible blacks and whites. I feel I need to ...
Aquarius_Girl's user avatar
0 votes
1 answer
64 views

Seeing the difference/losing information when comparing different formats

You can hear the resulting loss of sound information when you invert an mp3 in an audio tool and mix and render it together with the wav format. You can now hear the difference between the mp3 and the ...
karts's user avatar
  • 13
1 vote
2 answers
682 views

Wrong in-camera auto white balance issue

I own a Sony DSC-H55 point and shoot camera. It has a 14 MP CCD sensor with 10x optical zoom. I am happy with the overall image quality. The in camera auto-white balance is producing wrong color ...
digiwizkid's user avatar
-2 votes
2 answers
270 views

time-lapse photograh

when i have a sequence of individual pictures, how can I create a single frame like this? My tools are GIMP and/or Darktable. Kindly help.
BaRud's user avatar
  • 173
2 votes
1 answer
356 views

Making selections by value threshold in gimp 2.9

Does anyone know how to make a selection by value in GIMP 2.9? I'm trying to "cut out" saturated stars (values of 64k) in an astrophotograph. "Select By Color" should be able to do it, but the ...
mittimithai's user avatar
-1 votes
1 answer
434 views

Adding Exif data to a tif increases the file size

I have some jpg images exported from RAW files using UFRaw and they are very large in size(>15MB). So, in order to save space, I ...
RogUE's user avatar
  • 379
1 vote
1 answer
2k views

Gimp or ImageMagick: Adjustable kind of equalize?

Sometimes, I shoot pictures that are badly lighted (e.g. very dark areas, while part of the picture is well exposed). In some instances, equalizing the pixels can do real wonders. But is there also ...
user258532's user avatar