Something related to visual data files

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5
votes
3answers
321 views

How to rescale several images to same size

I have several image files in a directory. These images are similar size and have same background color. How can I make all images same size by adding background like this attached image?
2
votes
1answer
749 views

How can I extract images from a pdf file? [duplicate]

I have a pdf file that consists of an image per page. Are there any command line programs that can extract these images?
3
votes
2answers
634 views

Command Line Photo Organiser Like Shotwell but to run on headless server

Does anyone know of a program (or even bash script) that can take photos from various folders and then consolidate them into one place and organise them into a directory structure by date in the way ...
10
votes
6answers
457 views

Options to show images when on the console

When I am on the console (the tty, the virtual terminal, which you reach with Ctrl+Alt+F1-6, not a terminal emulator), what options do I have to view images, tiff, whatever that's not text?
2
votes
1answer
435 views

I want to understand Buildroot - the 3 compression config options (kernel, initramfs & rootfs)

I'm using buildroot to generate my images and for sure there is the option of compression with the help of different methods (LZO, LZMA, gzip, ...). So far i found these 3 compression options in ...
2
votes
3answers
2k views

shell command to get pixel size of an image

Is there a shell command that returns the pixel size of an image? I'm trying to produce an animated gif starting from different gifs with different sizes using convert (e.g. convert -delay 50 1.gif ...
3
votes
3answers
1k views

How to batch convert bitmaps to SVGs?

I have many gray scale bitmaps that I need to convert to a vector format, such as SVG. I have been using Inkscape, which gives nice results, but this takes about 10-15 minutes to open, convert, and ...
9
votes
1answer
3k views

Open source duplicate image finder for Linux?

Is there a free and open source duplicate image finder for Linux based systems? Finding exact duplicates (based on content, not file name) is sufficient for me, but the ability to find similar images ...
1
vote
2answers
2k views

Convert image with imagemagick command line convert tool

I have an image Image.png. How do I use the ImageMagick command convert to make this file into a Image.jpg file with the following requirements: File size is 200~500 kb. Resolution in not less than ...
6
votes
2answers
1k views

How do you binarize a colored image?

My friend has an colored image with Chinese handwriting (basically by taking photo of or scanning what he wrote on a piece of white paper), and he would like me to convert it into a black and white ...
0
votes
1answer
51 views

Is it possible to display a static image on VNC connections?

Recently, I've been getting semi-regular VNC connection attempts on my computer. It's most likely from the domain I set up a while back, but it appears to be mostly individual connection attempts, as ...
3
votes
4answers
524 views

Are there any multiformat image viewers, which are similar to feh and can show SVG files?

At the moment I'm working with a lot of SVG files and I don't have a good tool to inspect this files. Normally I use feh to take a look at an image, but feh can't show SVG files. Now I'm looking for ...
8
votes
1answer
1k views

How to store an image file in bash variable?

After I use the following command, pngString="$(cat example.png)" echo -n "$pngString" > tmp.png I can't open the tmp.png as a PNG file. Maybe some information is lost when I use $pngString ...
4
votes
1answer
92 views

How to change the backgrounds in isolinux

I've been messing with this problem for a while now, and it seems like there isn't much documentation, or people who have asked about this before. I've been trying to change the back640x480.jpg, ...
1
vote
3answers
1k views

Save image as 24 bit png

Is there a way to save an image as 24 bit png? I didn't manage with GIMP. Keep in mind this is pixel art so keeping the exact colors are important. I tried several things in GIMP, but it always said ...
2
votes
1answer
873 views

Compare video and image (percentage of differences)

I was wondering if it's possible to get the percentage of difference between a video and an static image using avconv (from libav) I have a surveillance camera constantly providing an RTSP video ...
0
votes
1answer
70 views

Loss of .eps file quality after using scp to transfer from remote server

When I scp (secure copy protocol) a .eps image file (generated using IDL) from a remote server to my desktop, the image seems to be of a lowered resolution and "choppy". Strangely, when I transfer ...
2
votes
1answer
3k views

open corel draw files on debian

So I have .cdr files on my PC and I want to open them on my Debian 7 box. What software do I need to be able to open it?` I have: 512 MB RAM 3 GHz processor 256 MB graphics with Debian 7
1
vote
0answers
29 views

Linux display server or program that can route video and/or images between its clients?

The JACK Audio Connection Kit (http://jackaudio.org/) is a really useful tool for working with audio on linux systems. It allows for both audio and MIDI data to be communicated between its clients, ...
1
vote
2answers
625 views

How to write to SD card with dd command?

Having some trouble with writing to my SD card, burning NOOBS (New Out Of Box Software) software to my SD card for Raspberry Pi. Attempted to use the following command as root: # dd bs=1M ...
1
vote
3answers
955 views

How to force lp from CUPS to print in grayscale?

I want to print an image from a command line: lp -o scaling=//100// image.jpg How can I force it to be printed in grayscale?
4
votes
2answers
779 views

Capturing Screenshot of terminal application via shell script?

Problem Run iftop for 5 seconds, capture the screenshot and save it to a file. iftop is a beautiful program for visualizing network traffic, but it doesn't have a batch mode where I can run it for ...
1
vote
2answers
571 views

Change Linux boot logo

I want to change the penguin logo that appears on boot. I looked into it and found this command: pngtopnm nelogo.png | ppmquant -fs223| pnmtoplainpnm > logo_linux_clut224.ppm But when I tried it ...
0
votes
1answer
136 views

Looking for simple photo organizing software for Linux

I am looking for a simple Linux software to organize photos. What exactly I want to do with this application is the following: I want to view all images in a given folder and just tag/star/mark some ...
1
vote
1answer
75 views

Native Linux program to comment pictures

I am searching for a native Linux program to comment (tag) pictures. Think of a square on someone's face with text somewhere. I don't want to change the picture (as would be the case with any vector ...
3
votes
2answers
332 views

Program for taking snap-shots of movie?

Are there any programs that would let me specify parts of a video-file (avi, mpeg, mp4, ...) and take "snap-shots" every so-and-so second/minute, and store it as a series of image-files (eg. jpeg)? ...
1
vote
0answers
126 views

Are there any good Embedded Linux image builder? [closed]

I'm looking for an image builder to create several Embedded Linux images for different ARM boards. I know the following image builder: linaro, buildroot, openEmbedded, yocto If I've missed one, ...
3
votes
1answer
547 views

Viewing large image on Linux

I need to view a large (50000x40000 px) png image on Linux. Unfortunately most tools (eog, convert etc.) either crashes or fail with note about too little memory. Is there a way to view this image (I ...
1
vote
1answer
498 views

No make target “uImage” with Buildroot 2013.05

After enabling Linux Kernel option and setting the Kernel binary format to uImage, I always get the following error: make[1]: * No rule to make target `uImage'. Stop. My buildroot configuration is ...
0
votes
1answer
1k views

Imagemagick used to generate PPM's in Linux, PPM's are unreadable

I need to generate PPM's as raw data sources for one program. I have a bunch of png's as Input, which I'm going to convert ppm's. When I try a tool like mogrify it generates files, but these are ...
1
vote
1answer
47 views

Detecting images containing only black pixels

I am looking for a method for detecting if an image contains only black pixels. When I say method I mean an existing command line tool. I could write up something myself but I'm sure something ...
3
votes
2answers
120 views

Search by file dimension [duplicate]

I have many photos. How to search files by its dimensions? For example, i want to search images with exact dimensions 500 x 500 pixels. Is there any utility for this task?
5
votes
2answers
160 views

Sync Palm Centro pictures on Linux

I have a Palm Centro, and I'd like to copy the pictures to my computer. However, I'm using Ubuntu, and I don't want to switch to Windows or use Palm's horrible sync application (through Wine.) Is ...
0
votes
2answers
594 views

How to convert multiple XCF files to PNG?

I have a folder with a lot of xcf files which I want all to be converted to png files, at best via a one-liner from bash. How can I achieve such a task?
3
votes
2answers
181 views

Delete duplicate images. Need Software for computing average color of an image

I want to delete duplicates in a massive bunch of images. Well as I have dups of the same picture in a different resolution I will make the deletion myself. BUT I want to do this in linear time. So I ...
4
votes
4answers
2k views

How to visualize directory tree structures?

I know I can use tree to show the nested content of a directory. Alas, its output is hardly beautiful as I want to include it in a documentation. So eye-candy is a requirement. So I was wondering if ...
5
votes
1answer
416 views

Console ScreenSaver without X11

I'm trying to setup a very slimmed down console only Debian system to act as a simple slideshow photo display. I know that it is possible to show graphics (I guess using the framebuffer) in the ...
1
vote
1answer
2k views

How to rotate an image in gs

How can I rotate an image with ghostscript? I am visualizing eps to screen. I am using the command: gs image.eps
2
votes
1answer
356 views

How to find all images containing any text?

I got a lot of images, and I need to find, which of them contain any text in English (to delete them). Is it possible to do it automatically?
4
votes
1answer
370 views

Are there any comic book authoring programs?

Is there any software designed to assist with creating comic books? The basic features needed are pre-drawn frames around the panels and the ability to easily drag and drop characters into the scene, ...
3
votes
1answer
173 views

Icon themes, when is svg format helpful?

I found that arch provides both oxygen-icons and oxygen-icons-svg, what's the necessity of svg format? Is there something that a PNG image "can't do", maybe performance issue? Not sure about it.
1
vote
1answer
73 views

creating gif animations

I read some where it was possible to create a gif by adding frames to it in a browser. Does that mean on the server you can add frames to it by using cat? Are there other file types that are so ...
11
votes
1answer
793 views

How to generate a lot of (blank) images files?

For a test, I need to quickly create 1700 jpg-images (even blank) in a defined size 1000x706. I wonder if we could do this with a shell script or a program (like ImageMagick). I wish they called ...
2
votes
1answer
52 views

Printing maps/cartoons/text saved as a picture/etc

What is the best way to print maps/cartoons/text saved as a picture/etc., so pictures that are not photos? The standard routines seem to blur and soften the printed picture, which is probably ...
1
vote
0answers
61 views

Looking for a picture describing Linux concept [closed]

I'm looking for a picture describing Linux and open-source concept. I remember I saw it once on the Internet. It depicts airplane which is being assembled by mascots of open-source world. They bring ...
11
votes
5answers
909 views

Sort images by aspect ratio

I am trying to select a few art images to fit some new frames. I would like to be able to sort these images by proximity to a particular aspect ratio and then view them in decreasing order of ...
0
votes
0answers
146 views

Gigapixel Panorama not loading after converted with imagemagick

I made a 3GB tif panorama, but as 3GB is a too big size to open in a computer with a 3Gb RAM, i converted it to JPG convert input.tif output.jpg The result was a 15Mb(?!?) JPG, which i am unable ...
2
votes
1answer
269 views

xv-like image viewer that lets me annotate/mark images?

When I'm viewing many images w/ xv (sometimes in "visual schnauzer" mode), I sometimes want to "bookmark" or annotate a given image. I don't think xv can do this, but is there another xv-like image ...
1
vote
1answer
3k views

How to download all images from a website (not webpage) using the terminal?

I want a command that I type a URL, for example photos.tumblr.com, and it download all photos on this site in a folder, but not only images of the site's homepage. This command need to download the ...
1
vote
1answer
102 views

Displaying just an image instead of text

Is it possible to compile the linux kernel so that when it is booting up, instead of the boot up text to display and image and ONLY an image (like osx)?