Questions tagged [images]

Something related to visual data files

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Imagemagick: How to a PNG with the highest possible quality?

I tried messing around with parameters, but it seems I can't get it to work. Here's what I got: convert resize 491.33 "image1.png" -quality 90 image2.png. The result is okay-ish, but I feel ...
Kristian Nordestgaard's user avatar
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1 answer
18 views

Imagemagick: Can I set a max height of the watermark image?

I have this BASH script, which scales the watermark image: #!/bin/bash echo "Which file to watermark?" read -e "filetowatermark" echo "Which file to use as watermark?" ...
Kristian Nordestgaard's user avatar
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43 views

Attempting to get image preview set up in Ranger, and having an issue with images appearing off-screen

So I am attempting to get image preview setup in ranger with WezTerm on a WSL2 install of Arch. I've got images showing with imgcat: But I am having an issue where ranger is just shoving everything ...
Antivash's user avatar
-1 votes
1 answer
179 views

Display images using fbi on startup using systemd

I can successfully display images using the following command: sudo fbi -T 1 /home/pi/photo-screen/photos/*.jpg -t 4 I now want to start a slide show of those pictures as soon as the Raspberry PI ...
Besi's user avatar
  • 103
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1 answer
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How do I access all the files on a disk image?

To backup a remote server, I ran this command on my local machine: ssh user@remote "dd if=/dev/vda | gzip -1 -" | dd of=image.gz I then decompressed image.gz and tried to mount it by double ...
JacksonHunt's user avatar
2 votes
2 answers
77 views

How to preserve PNG image type (RGB or Indexed) when converting with NetPBM?

I have a PNG image processing workflow that relies on the images to be in the 24bit Truecolor format also known as RGB images. PNG permits either RGB or Indexed color representation. The pnmtopng ...
Dima Chubarov's user avatar
1 vote
4 answers
121 views

How to sort and filter images by modification time and view them in nsxiv on FreeBSD

I am using nsxiv to view JPEG and PNG images on FreeBSD. However, I am unable to find a way to sort and filter the images by modification time to view them in nsxiv on FreeBSD. On Linux with GNU ...
Flux's user avatar
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2 answers
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How can I preview image data urls in linux (e.g. data:image/png;base64, <data>)?

I opened some json-based configuration file and I see that there is a favicon key whose value is a data url representing a png: "favicon": "data:image/png;base64,iVBORw... I am looking ...
Marinos An's user avatar
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1 answer
80 views

Bulk convert from PNG/TIFF to JPG with minimal loss in quality

I need to upload my photos to Shutterfly, but they don't seem to support EXIF data on PNG/BMP images. I need to thus convert to JPG for some prints, but I want to lose as little information as ...
olivarb's user avatar
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Scrub identifying data from USB stick

I am providing photos related to a legal matter to a lawyer and she is going to give them to law enforcement without giving them my name (under attorney client privilege). I am not sure if she is tech ...
Sean Breheny's user avatar
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132 views

Using feh --keep-zoom-vp and --zoom fit at the same time?

If I run: feh --keep-zoom-vp * Then feh will keep the zoom and viewport positioning when browsing through images, as explained in the manual. This works as expected If I run: feh --zoom "fill&...
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59 views

Docker image based on smaller base image is heavier

I'm creating two docker images, one for development and another one for production. These images are based on the same base image (provided by NVIDIA) with the difference that one is the development ...
bert's user avatar
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0 answers
142 views

Is there a terminal-based image viewer that enables directory browsing after viewing a single file?

I am searching for a lightweight terminal image viewer like feh,meh, sxiv, pqiv, or qiv, with the end objective of having a terminal image viewer that allows you to explore all pictures in a folder ...
DawsonLeery8913's user avatar
2 votes
2 answers
1k views

How to remove old kernel images

Am currently running POP_OS 20.04 (LTS). When I open the terminal and run the command, dpkg --list | grep linux-image it returns a list of apparently installed images, including my current (6.0.12) ...
frogsbottom's user avatar
0 votes
2 answers
231 views

Capture a jpeg image / image stream from a console program?

I'm running a headless Raspberry Pi, and would like to convert the console/terminal output to a single jpeg or video stream. For example: capture the output of pbytop every few seconds and stream it ...
dtbaker's user avatar
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3 votes
0 answers
91 views

Make GNOME Image Viewer not cycle

I'm using GNOME Image Viewer (ver. 3.38.2) as default, and I navigate lots of data-visualization by using the arrow keys on the keyboard. The data sets could look similar but subtly different, which ...
Jackson's user avatar
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0 answers
27 views

Can I put images in an email using a text based email client?

Can I use a text-based email client to embed images in my emails? Outlook is really inefficient and it drives me crazy. But I'd still have to embed emails.
leeand00's user avatar
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1 vote
1 answer
100 views

Exiv2: How to print tag values without printing the corresponding filenames

I'm using exiv2 0.27.2. I want to print the tag values of multiple webp files, but without the filename being printed. With the following command: exiv2 -g Exif.Image.Artist -Pv *.webp I get the ...
whitewings's user avatar
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10 votes
2 answers
989 views

How can I get the number bytes to write per row for FrameBuffer?

Goal: I'm writing a very simple image viewer for framebuffer /dev/fb0 (something like fbi). Current state: My software takes the pixel resolution from /sys/class/graphics/fb0/virtual_size (such as ...
Garid Z.'s user avatar
  • 532
1 vote
0 answers
70 views

The fsck: error2 error occurred when running the image

I'm using qemu to run an image. If the mirroring is successful, I then run on gem5. The image I use is at this website. http://dist.gem5.org/dist/v20-1/images/x86/ubuntu-18-04/boot-exit.img.gz I use ...
Yujie's user avatar
  • 193
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0 answers
451 views

How to put files into the image more conveniently?

I have an image file boot-exit.img. $ file boot-exit.img boot-exit.img: DOS/MBR boot sector I want to put files into this image . This is too much trouble. I always move the local run.sh to the /home ...
Yujie's user avatar
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1 answer
595 views

Why and how is the Linux kernel image compressed?

Why and how is the Linux kernel image compressed? Isn't it pointless to compress it, when the image is and must be (as far as I know) uncompressed in RAM? How can it even be compressed? How can the ...
user551065's user avatar
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2 answers
586 views

What is the difference between vmlinux and vmlinux.bin?

What is the difference between vmlinux and vmlinux.bin?
user551058's user avatar
-1 votes
1 answer
221 views

png images to single pdf

I have Version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 on Ubuntu 20.04. I tried convert *.png out.pdf to convert 70 png files into a pdf, but strangely always only 18 pages in the pdf file. I didn'...
wsdzbm's user avatar
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1 vote
0 answers
169 views

How can I get my SVG icon to automatically change its colour depending on the background colour?

I am trying to add some icons into ~/.local/share/icons/ so that I can use them with notify-send. I can do that just fine, but the icon colour is not adapting to the background, unlike the Adwaita ...
Silejonu's user avatar
1 vote
1 answer
474 views

Extracting Images using pdfimages: Getting 3 Images Per Page: .jp2, .png, .jb2e

Using pdfimages -all on a .pdf file, each page of which is text, I'm getting 3 images for each page in the pdf: Foo-001-000.jp2 Foo-001-002.png Foo-001-002.jb2e The first file is mostly blank, but ...
Diagon's user avatar
  • 620
1 vote
0 answers
33 views

Create Ubuntu image without USB or Rebooting

I want to create a backup image or a snapshot of my Linux Ubuntu 22.04.1 system. Is there any way to do it without using USB stick, rebooting the system.. Basically, do it in the 'background' while I'...
Milos's user avatar
  • 11
2 votes
1 answer
616 views

Why is the Image file a PE executable

I've been trying to compile a linux kernel on my own machine with the source linux-6.0-rc5, which is the latest. Everything goes well yet something haunts me. When I get the Image file under arch/...
Hongjian Liu's user avatar
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2 answers
344 views

How to use jpegoptim to have files only 20kb in size?

I have tried using jpegoptim and even tried the manpage but am stumped. Here is a file I want to reduce to 50k and even open to reducing quality of the data - Image: Filename: shirish.jpg Format: ...
shirish's user avatar
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0 answers
51 views

Determine dimensions of GIF image

How can I determine the image dimensions I need to use on my site at http://orcacomputers.com? I want to ensure I get the correct image dimensions for a file named patten.gif. I have an Apache error ...
mister mcdoogle's user avatar
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0 answers
20 views

Is it possible to run a hybrid pc on drastically low power consumption while still displaying a slideshow?

I've bought a Surface Pro 3 for my elders, and installed ZorinOS on it -- a great distro for hybrid pcs btw!! One stuff we'd like it to do is to act as a digital photo-frame by running a slideshow of ...
Etsaf's user avatar
  • 123
0 votes
1 answer
17 views

Restore images / pictures chunked into many files

i am trying to find a way to restore image files that got chunked due to a restore from a broken harddrive. I am not sure if those files are in correct order or are at all recoverable as images. ...
Ralph Segi's user avatar
0 votes
2 answers
673 views

V4L2: Why image taken with shortest exposure-time looks way too brighter than auto-exposure mode?

When capturing image using the default auto-exposure-mode: $ v4l2-ctl -d0 --set-fmt-video=width=width,height=height,pixelformat=MJPG --stream-mmap --stream-to=auto_expo.jpg --stream-count=1 auto_expo....
Garid Z.'s user avatar
  • 532
1 vote
2 answers
71 views

What program is best for outputting an image with my inputted text on it?

I'm looking for a program that is able to output an image with my inputted text on it. Sort of like a template, I would input varying text / numbers and an image, and the program will output the image ...
Liam's user avatar
  • 11
-1 votes
1 answer
958 views

HTML not loading local images in any of my browsers in my system [closed]

Problem In my main desktop system running Arch linux, when I create an HTML file with a tag and an image like so: <img src="imagepath" alt="sometext"> the image does not ...
Yoquec's user avatar
  • 1
3 votes
1 answer
45 views

Take a picture or a screenshot with my voice

I spend a lot of time taking pictures with a usb camera attached to a microscope. Thing is... I need to manipulate the plaque with my two hands, so moving one hand from the microscope to the computer ...
murpholinox's user avatar
0 votes
1 answer
717 views

CLI tool that compress the given image, whatever file type the image is (png, jpg, gif, webp, svg)?

I know that there are many tools to optimize an image: pngquant optipng jpegoptim gifsicle exiftool ecc but they are all specific for a certain file type. Is there a single command line that, ...
nulll's user avatar
  • 235
0 votes
0 answers
37 views

software for editing 2 images at the same time

I am looking to find if possible a tool which can take a area screenshot and let me edit it like so: however I also want an image like this to be created simultaneously after editing the first image: ...
nate's user avatar
  • 1
0 votes
1 answer
860 views

What are the weird characters from an image file?

So i am pretty new to linux and i am learning basic commands. I am also very interested to know how things work under the hood, so sometime after i learned both the cat and nano commands, i tried ...
Konstei's user avatar
  • 13
1 vote
0 answers
46 views

Is it possible to repair a jpg that doesn't "look" broken? [duplicate]

I have many photos that were recovered a long time ago, at the time I recovered them and everything looked fine, the thumbnails produced looked good. However now, 16 years later. I see that the images ...
Jamie Hutber's user avatar
0 votes
1 answer
216 views

How to make sure images captured by FFMPEG from USB is lossless?

I'm to capturing 10 images from camera. Like so: ffmpeg -hide_banner -loglevel error -f video4linux2 -i /dev/video0 -vframes 10 -video_size 640x480 test%3d.jpg Since JPG is lossly, at I need to ...
Garid Z.'s user avatar
  • 532
0 votes
2 answers
204 views

Scale images to fixed target pixel size

I want to reduce the size of my JPG images to the same total pixel size (e.g. 6MPx) no matter of the input size or ratio. Of course mogrify or convert can resize: This ... mogrify -resize 3000x3000 ...
pLumo's user avatar
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1 vote
1 answer
814 views

How can I display an image coming as a binary stream?

I would like to display an image that I am receiving from a curl command. For example, I would like to display it using Eye of Gnome. How can I do that? Something like: curl https://example.com/image....
SteeveDroz's user avatar
0 votes
0 answers
270 views

How to visually freeform select and save the part of an image in linux without gimp?

Pretty much as per title: How to visually freeform select and save the part of an image in linux without gimp? In other words how do you freeform select/cut out something from an image and save this ...
jjk's user avatar
  • 411
6 votes
1 answer
820 views

How to tell if an image contains a specific color?

Is there a command line tool to tell me if an image contains a specific color? For example, if it contains #ff0000?
Phu Ricx's user avatar
0 votes
1 answer
808 views

Using dd to restore multiple partitions from multiple image files to same destination drive

I want to use dd command to create image file(s) from a source machine then extract it using dd to a destination machine. But the catch is that mount points / and /home are on separate partitions on ...
Logan Lee's user avatar
  • 249
1 vote
1 answer
151 views

How to tell the integrity of a recovered file, specifically if pixel data of recovered image is corrupted

I delete a file from disk, then do some write operations on the same disk, and then run a recovery program to recover the said file. Is there any way to check the integrity of the file? Let the ...
Lenny White's user avatar
0 votes
1 answer
352 views

html file to picture on cli of ranger preview

I would like to preview html files in ranger as pictures similarly how pdf files can be previewed. I imagine first it would be needed to force it into A4 page or something of the like, so it's a ...
fbence's user avatar
  • 465
4 votes
3 answers
2k views

Point out my mistake while converting TIFF to PNG/JPG

This is a input tiff image, which I want to convert to JPG/PNG. googledrive-link-to-download-sample As general rule of thumb, I always use following command to convert between 2 image formats (mainly ...
Garid Z.'s user avatar
  • 532
1 vote
2 answers
267 views

Can I pull an image down from a repo and save it locally as a different name?

I can pull down an image with podman pull podman pull alpine:3 This currently pulls the image down as, REPOSITORY TAG IMAGE ID CREATED SIZE docker.io/library/...
Evan Carroll's user avatar
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