Questions tagged [image-processing]
The image-processing tag has no usage guidance.
183
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Which compression modes of convert of imagemagick are lossless (with -quality 100)?
On my Debian 12,
$ convert -list compress
B44A
B44
BZip
DXT1
DXT3
DXT5
Fax
Group4
JBIG1
JBIG2
JPEG2000
JPEG
LosslessJPEG
Lossless
LZMA
LZW
None
Piz
Pxr24
RLE
RunlengthEncoded
WebP
ZipS
Zip
Zstd
Which ...
- 149
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Can't install volumentations on google collab
I am relatively new here. I have a very limited dataset of 3d-images that i want to use as a dataset to train a neural network. This is why i am trying to augment those images .
I see that ...
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1
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File Size increases on basic pdf -> raster image -> pdf roundtrip with `pdfimages` + `magick`
Why do I not succeed into making this simple pdf → raster image → pdf round-trip file-size-stable?
$ # Get original file (8KB, just extracted from my scanner).
$ curl "https://nextcloud.mbb.cnrs....
- 366
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189
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How to extract frames from a video using ffmpeg?
Basically I want to extract all frames from the video where the images will be resized to be 720p. All of this I know how to do. But for testing I want to extract every Nth frame. So every 30th image ...
- 1,496
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How to use action matching for images (actual images, not URLs or filenames) in KDE Clipboard?
What one does use to match objects such as images?
- 111
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Are the "full size" images from Instagram on a browser actually full size?
I am following the "view page source" method for getting the full resolution of an Instagram image, but feel like I'm doing something wrong. Let's consider this example.
If you view source ...
- 101
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How to draw a moving line as slider for the image comparison video generator script in Python with FFmpeg
I have the below script to generate a video slider with FFmpeg
You can see example here (first 10 seconds) : https://youtu.be/F_wf1uHqZRA
I am trying to replicate effect of imgsli like a person is ...
- 783
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How to find duplicate images, possibly with different resolutions?
I have some images (photos) and there are duplicates but no matter how I sort them they are scattered because of resolution and irregular naming.
I tried gm compare but can't figure out which metric ...
- 145
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How to invert an SVG image?
I’m searching for a solution (in Linux console) which “inverts” an SVG. It shall take an input .svg and generate output .svg with multiple shapes, each one filling a single transparent area. And vice ...
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How to determine bits per channel in XPM (X PixMap) image format?
Looking at the XPM (X PixMap) image format, I don't see anywhere that the number of bits per channel (or, equivalently, the number of possible colors) is specified. Poking around on my Ubuntu system, ...
- 138
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identify PNGs in SVG's clothing
I sometimes encounter "faux" SVGs, i.e., SVG images files that simply list pixels as paths:
<svg xmlns="http://www.w3.org/2000/svg" width="1295" height="573"&...
- 123
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Replacing a color using -transparency regardless of existing pixel opacity, using ImageMagick
I have a colorful image that has alot of existing transparent background, but also a few blocks of hot pink rgb(255,0,255) color I want to additionally become transparent.
I'm doing so like this:
...
- 386
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107
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Color rotation/correction help request for GIMP
I'm new to GIMP and am looking for help on color rotation. Some target colors don't always seem to be accessible, or I don't understand how to get to it.
For example:
Here I can rotate the color from ...
- 111
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Why has Chrome started to distort the rendering of icons or images?
When I open a new page and move the mouse, Chrome starts to render icons and images in a distorted way.
For example, right now, the SuperUser Log on this page's top is rendered as follows:
The "...
- 2,384
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GIMP Does Not Paint Consistently
I want to use the Paintbrush Tool in GIMP, but it does not apply paint in a consistent manner.
Often the paint is applied very lightly, sometimes even hard to notice, or not at all (no Undo option ...
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