I'm doing chemistry/material research. In part of my research, X-Ray data is created in the form of gray scale images. I wonder if I could use image processing in Gimp (or maybe other software) to enhance my data quality.
The data in the images consists of 3 parts:
1) Reflection points: seen as dark spots in the images. The position, size and shape (round, oval) is part of the data acquisition.
2) Fluorescence: seen as a centered dark shadow.
3) random Noise: single points all overall the image. This noise has a preferential direction (up & down), which is due to the detector type used.
The images can be created in different "Cutoff" levels, which refer to an internal algorithms of the device to remove data from the image, based on the intensity of the recorded signal for each pixel. There are 10 levels.
In one image I marked very weak signal points, that are barely visible. The position of these points can be calculated from the other data points, so there is a point to be expected.
The position and shape of the reflection points is used for further research, so this is the data I would like to extract more precisely.
Is there a possibility to reduce the amount of the noise and fluorescence from the different cutoff levels? The process would have to be a fixed routine without manual work, so it can satisfy scientific standards.
I've been using gimp for several years now, various versions, and usually just ignore the out-of-gamut warnings as I never print anything, and likely never will.
Suddenly today a huge chunk of colours seems to have disappeared from my palette (see image) at some point while I was working, and of course they include hues that I want to use.
I have tried changing to every colour mode, turning off all colour management options, uninstalling gimp and reinstalling the new version ( I was previously on 2.6), deleting my profile, and then reinstalling again, but this problem persists.
Am I missing something obvious (probably...), or has something gone drastically wrong here?
I would appreciate any help / suggestions anyone can give, as I rely on GIMP for my work! Thanks.
About the function Layer ➤ Crop To Content it would be expected that only the empty areas (with transparency) would be removed from the layer and if there were no empty areas nothing would be changed.
Why then, in some cases, does the cut remove areas with content?
In the example below, only the crop to content filter was applied to images 01 and 02.
• Image 01
As seen in images 02 and 03, part of the content of these layers was removed leaving a transparent area.
• Image 02
• Image 03
Any configuration that I am losing and that is generating this unwanted result? A bug? What would be the explanation?
New to GIMP. Created new image (File->New) which brings up a window where I specify the width and height (in pixels). I set these values (1092 X 1092) but then my project is too large for this size. So I would like to "delete" the first image (and it's contents) and start over. How is this done? Can't figure out how to "select" the entire image and delete it. Under Edit->Clear nothing happens.
At present the only choice seems to be to close the file and delete all changes, then create a new image and, when it is the desired size, save it to the previous name and overwrite.
Any and all suggestions greatly appreciated.
new to gimp, have only used preview and photoshop.
I have a base layer with a building layout. I guess I am adding a second layer and in that layer I want to paste in 15 disks, each with its own text so there will be 30 elements. I want to grab and maybe slightly resize, and move each one to my satisfaction. The only way I am finding to do this is that I have 31 layers, one for each element.
I've tried searching but I think I am wording wrong- can't find the answer for my situation. Is it possible to paste a number of elements into a layer and move each one about?
I understand how to use "Alpha To Selection" to select text, then delete that selected area from the background layer in order to allow for an image (underneath the background layer) to show through. That's awesome.
I need to allow an image to show through text, but only through the part of the text that corresponds to a particular shape.
I successfully decomposed a jpeg to RBG, adjusted one of the 3 layers (and neither of the 2 channels), then requested 'recompose'. The resulting jpg has no color.
Just curious if any of you have personal preferences in one vs the other? I just tuned in to realizing that gimp can author Webp images, and that Webp is a more likely heir than animated PNG for web based animations.
From my initial exposure, the Webp seems to excel in not having such a limited palette, and I guess partial transparency, but unfortunately the common free image hosting sites that I normally use (imgur) does not support them?
For a 2 frame animation I just made using movie stills as source, the Webp export was twice the size of the GIF export.
In a perfect world, I am scanning large numbers of recipes. I then crop the images. Sometimes there is more than one recipe on a page. Sometimes one recipe is spread over more than one page so I have to stitch the parts together. I then export, usually as .jpeg to the desired folder on the HDD.
In the real world:
1 I use File/Create/Scanner-Camera to open the Select Source box
2 I select the scanner I wish to use
3 I set the scanner parameters and start the scan
4 When the scan is done, I select <save> to transfer the scan to GIMP
5 I crop, rotate, edit as needed
6 I export the finished file to Recipes/one of several folders acting as categories
7 Go back to step 1
I am looking for something that can automate steps 1 to 4, wait for me to finish step 5 and reduce manual input on steps 6 and 7
I have been trying to look at plugins that may do part of the job and also for tutorials that can help me achieve doing the job myself.
I know the registry is currently dead and it is recommended I google search. I have not found anything that is of practical use.
