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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3
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0answers
81 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?
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1answer
72 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 ...
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2answers
84 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.
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1answer
71 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 ...
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2answers
79 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 ...
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2answers
372 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: ...
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0answers
38 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 ...
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2answers
396 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 ...
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1answer
46 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 ...
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2answers
229 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 ...
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2answers
77 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?
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4answers
291 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 ...
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1answer
597 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 ...
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2answers
162 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 ...
2
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1answer
46 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 ...
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2answers
66 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 ...
3
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1answer
612 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 ...
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1answer
242 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 ...
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1answer
93 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 ...
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1answer
230 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, ...
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1answer
27 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 ...
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2answers
5k 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 ...
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1answer
1k 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 ...
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1answer
352 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?
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4answers
219 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 ...
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1answer
62 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 ...
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2answers
580 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 ...
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2answers
232 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.
2
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1answer
250 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 ...
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1answer
324 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 opened them in GIMP and re-exported as tif images with JPEG compression ...
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1answer
1k 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 ...
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1answer
310 views

Issue with color profiles in grayscale images (compared to GIMP)

X-Post https://www.reddit.com/r/photoshop/comments/5v4zid/issue_with_color_profiles_in_grayscale_images/ (slightly edited) Hi everybody! I hope the language barrier will not be noticed (feel free to ...
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2answers
3k views

How do I create a split-tone effect using GIMP?

How do I create a split-tone effect in GIMP? Here is an example of the effect I am looking for.
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4answers
1k views

Local version of “White balance” in GIMP to clean up photo of document

I have a photograph of a document with black text on white background. The photo has a few problems: The text is a bit blurry. Overall there is noise even in the white areas. The background appears ...
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1answer
422 views

Haze effect in moon photo? (using GIMP)

I used two photos of the recent supermoon and combined them. The result is OK (link below). I was unable to achieve a look I wanted, where haze causes darker areas of the moon surface to assume the ...
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5answers
2k views

A photo effect that favours yellow & blue; What is its name & how is it done with GIMP?

I have recently come across several pictures that seem to have been modified to favour or skew towards both yellow and blue tones. The photo editing effect creates a special, somewhat cosy ambiance. ...
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1answer
196 views

Filtering narrow spectral lines in digital postprocessing

I am trying to reduce the impact of sodium vapour lighting on starscape-type images. This type of street lighting exhibits a very narrow orange spectral line, and it is common amongst ...
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4answers
504 views

What sort of post-processing can improve this washed out image?

The original image [ISO => 400, F11, 1/320 seconds, -1/3 EV] looks washed out, may be because of bright day light overhead. In GIMP, if I apply Tools => Color Tools => Levels => Auto, the picture ...
3
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1answer
2k views

Why doesn't my Gimp perspective transform apply to the entire image?

I'm trying to correct the perspective of a photo in GIMP, but I can't seem to get it to apply to the entire image. The transformation applies to a small area and leaves empty white space around it. I ...
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1answer
297 views

Remove “random” noise [closed]

I have a picture which was taken from a book and it's full of noise: I tried to remove the noise manually but it is too difficult and takes a lot of time. I noticed some webpages who attempt to treat ...
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2answers
811 views

.NEF Raw files open in Black and White

I recently went flying with a friend and took my Nikon D3300 DSLR up with me to get some aerial shots. As I'm still learning I set the camera to RAW+JPEG so I had some pics and could also have a mess ...
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2answers
592 views

Warp-sharp script not working in Gimp 2.8

I have been scanning film and I just got sick of the Unsharp mask setting of my scanner software (EPSON Scan). It just makes the grain look huge and unnatural, resulting in weird contrast on most ...
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2answers
460 views

Why do exported image contain colored grains/noise when viewed in GNOME Image Viewer?

I was editing a JPG image taken by Nikon D5300, a mid-range DSLR. Original picture was somewhat washed out. After some color-correction, I exported the image both in JPG and PNG format. Original JPG: ...
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1answer
1k views

Expand Canvas and Extend Edges of Image to Fill It

Hopefully this is the right place to ask this type of question. I am editing a digital photo (in gimp), and need to increase canvas size slightly. At one point, I was watching a tutorial where they ...
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1answer
4k views

How can I remove the grid lines during transformation in GIMP?

I'm trying to change the perspective of a layer in GIMP, but it's very difficult to see what I'm doing while there's this enormous grid over the selection. Is there any way I can disable this? Here's ...
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3answers
9k views

Double exposure photo with Gimp

Since I bought my first camera, I want to do a double exposure photo. I know double exposure photos are two combined photos, like the following one: (source: alexwisephotography.net) My goal is ...
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3answers
1k views

How do I use the “Standard Deviation” and “Scale” parameters in Gimp 2.10's GEGL-based unsharp mask?

Previously, Gimp 2.8 and earlier used a dialog with the familiar "radius, amount, threshold" parameters as described at Unsharp mask - what do the parameters do?, like this: But in Gimp 2.10, we ...
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2answers
570 views

How can I correct high-altitude photos taken without a UV filter?

I took a string of photos, without a UV filter, at an altitude of 2.500m/8.200ft and they all look 'odd', flat, washed out. In the GIMP Color > Levels Tool the Input Levels the histogram for the red ...
5
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1answer
9k views

GIMP Image Auto-Align Plug-In: I. just. do. not. get. it. Sorry! [duplicate]

Dammit Jim, I'm a photographer not a computer expert! I have tried to use GIMP's Auto-Image-Alignment plug-in and everything's there but I just do not get how it works! I have 100 pictures of our ...
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2answers
2k views

How to convert a dull monochrome photograph into a sharp black and white photograph with great contrast? [closed]

I shot the following photo with Nikon D3100 + Nikkor 50mm 1.8f G. I shot this with the Monochrome option of the camera. I use Gimp for post processing. I sharpened this with the Unsharpen Mask ...