Questions tagged [image-processing]

Manipulating and processing static images, techniques and software for such tasks.

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376 questions
128
votes
7 answers

How can I scale all images in a folder to the same width?

I want to scale all images in a given folder to the same width (but different appropriately scaled heights). How can I do this using a GUI-based or command-line tool? For bonus points, is it possible to restrict which images are scaled based on…
lofidevops
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61
votes
4 answers

How can I split an animated .gif file into its component frames?

How can I easily split an animated .gif file? I want to see each frame. I would really prefer to not to export every frame to a directory. I'd like to view them individually in one application if possible. Is this possible on Linux?
Kris Harper
  • 13,477
14
votes
1 answer

How to divide an image in X equal parts

I am working to create a Google group for Ubuntu but one thing I want to do is create the main image that goes in the top (The one that divides into 5 pieces). How can I divide an image horizontally (Or vertically) via Terminal or GUI. For example I…
Luis Alvarado
  • 211,503
11
votes
3 answers

How do I combine Multiple TIF files into a Single TIF file?

I have a series of TIF files and would like to merge them into a Single TIF file How do I do that?
To Do
  • 15,502
4
votes
1 answer

CSV table creation from image

What are the Ubuntu options to create CSV tables from an image: Ideally, options would be simple and quick. Image is from Yield Curve article
gatorback
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3
votes
1 answer

Open two images side by side

I have to compare lots of images (gif format) manually to each other. In order to do that I do the following steps: I open one image with the ubuntu image viewer I semi maximize the window to one side of the screen I do the same thing with the…
Ole
  • 31
3
votes
1 answer

Batch convert images in avif format to dng format - how?

I have a bunch of avif-files that I want to convert to dng - as the software I want to use to work on the images does not accept avif - and I don't want to use jpeg. Any ideas? Thanks!
sers
  • 131
2
votes
1 answer

Convert image color channels?

So, I have an image and I want to be able to set the Red and Blue values so they're equal to the value of the Green in the image. This is because the image is entirely Green and I want it to appear White. Any ideas?
user245115
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2
votes
3 answers

Batch converting swf to png

I have a folder with a lot of swf files. They are named that way: fis1.swf; fis2.swf; fis3.swf; ... fis20.swf. I want to convert all of them into png files. I know it can be done with swfrender from swftools, but it only renders one file per time.
gabrielsimoes
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2
votes
0 answers

Unable to see images or screenshots of applications in Software Center

In the Ubuntu Software Center app, I am unable to see images of each application or the screenshots: Do you know how to resolve this issue?
2
votes
1 answer

AVIF editor recommendation

Any recommendations for an image editor that can save in avif format? I am interested in outputting avif format files directly, without having to go through a secondary conversion process.
Amblymoron
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1
vote
0 answers

How to reduce the file size of all the photos in a folder

How to reduce the file size of each photo inside the folder. We want to keep the image dimension size of the photos and only reduce its file size.
1
vote
3 answers

How to increase contrast of a black and white image?

I receive scanned documents that I need to increase contrast to print. How to do it?
Vitor Abella
  • 7,537
1
vote
1 answer

How to create JPG file in RawTherapee without changing original RAW

With RawTherapee 4.2, I want to edit the image and export it as jpg file, but without touching the original RAW file. Is it possible? At the moment I copy the RAW, edit it and put it to the queue to create a jpeg. Then i delete the copied raw file.
1
vote
2 answers

Batch Convert Images from One Format to Another while maintaining directory structure, and removing originals

I've looked at this question, and while it works there a few issues: All converted images are placed in the directory from which the command is called. The original images are kept. I need to convert around 70,000 .tif and .jpgs to .pngs. It's…
user2757729
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