Something related to visual data files

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11
votes
1answer
749 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 ...
11
votes
5answers
828 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 ...
10
votes
6answers
334 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?
9
votes
1answer
3k views

How to Extract Album Cover Image from MP3 file?

I have a bunch of MP3 files that have their album art included within the file itself. I am now looking for a way to extract them to store them separably, at best from command line. Is there a way to ...
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 ...
9
votes
1answer
2k views

Searching for a command line tagging tool for mp3 and ogg that supports pictures

I am searching a command-line tagging tool that supports ogg- and mp3-tagging and allows to add a picture to the tags. Currently I use lltag but that does not support pictures. dagger is the tool I ...
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 ...
8
votes
4answers
18k views

What is the fastest way to view images from the terminal?

The terminal is very fast and convenient way to quickly access directories and files (faster than find and click on the directory). One thing that it cannot show in text-mode is "pictures". What ...
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 ...
6
votes
5answers
1k views

Find images by size: find / file / awk

I've been trying to find png image files a certain height (over 500px). I know that file will return image dimensions. Example: $ file TestImg1a.png TestImg1a.png: PNG image data, 764 x 200, ...
5
votes
3answers
306 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?
5
votes
2answers
600 views

renaming images to include creation date in name

When I look at the properties of an image, I can see the date the photo was taken in "Date Taken". When I edit the images (proprietary program) this data gets lost. How can I rename the image files ...
5
votes
3answers
665 views

Change file created date from JPEG EXIF metadata

When uploading to an ftp site, the original file create date seems to be lost, and I get the upload date instead. However, the Exif data in the file is correct. Is there a tool to batch change the ...
5
votes
1answer
402 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 ...
5
votes
2answers
159 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 ...
4
votes
4answers
177 views

easy-to-use image-editing FLOSS

I'm looking for recommendations for something easy to use that will allow me to edit my images. I fiddled with Inkspace and GIMP and found them not so intuitive (I don't want to have to read a manual ...
4
votes
2answers
475 views

Irfanview alternative

I'm looking for some very simple image viewer with the following functionality: fast start next/previous navigation (in directory) full-screen mode reasonable format support keyboard controllable ...
4
votes
3answers
2k views

Command line convert webp to jpg?

I'm using ubuntu 12.04. I've installed libwebp2 & libwebp-dev So far, no example found on the net of converting webp to jpg. Some webp files can easily converted by using imagemagick with ...
4
votes
1answer
527 views

Resize a very tiny xcf image without blurring or dithering it

I have some drawings I made with an Intuos tablet. All of these drawings are 25x35 or so. The color of each pixel was very carefully selected. They're kind of like 'miniatures.' I need to resize ...
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 ...
4
votes
1answer
91 views

IANA image format string from binary stream

How can I get the official IANA Image Media Type (if any) of a binary stream? I'd like to avoid trusting to file extensions and vague guesses when handling images. Preferably some command using common ...
4
votes
1answer
154 views

Imagemagick: set IPTC parameters in jpeg image

With the Imagemagick command $ identify -verbose image.jpg so many properties of the image are shown. For example, in the output I can find Profiles: Profile-8bim: 1058 bytes Profile-iptc: 1017 ...
4
votes
1answer
393 views

ImageMagick (or other) for UTF-8 text to image

I'm trying to create many single-character images using convert. The purpose is to provide a plastics specialist with images to print onto keyboard keycaps. The ImageMagick documentation suggests ...
4
votes
1answer
330 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, ...
4
votes
2answers
569 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 ...
4
votes
1answer
84 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, ...
3
votes
3answers
789 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 ...
3
votes
1answer
116 views

Converting and rescaling a lot of png images to jpeg

I have a lot of .png images in a folder. Is there a command (or software) that can convert all them to .jpg and (simultaneously) rescale the created .jpg files to 25% of their original size?
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 ...
3
votes
4answers
436 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 ...
3
votes
2answers
111 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?
3
votes
2answers
302 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)? ...
3
votes
1answer
68 views

Copy image from clipboard to file

Is it possible to take an image from the clipboard and output it to a file (using X)? I can do this with text easily: $ xclip -selection c -o > file.text But when I try the above with an image ...
3
votes
1answer
159 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.
3
votes
2answers
477 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 ...
3
votes
1answer
1k views

How to extract files from uImage?

Buildroot is generating Images for an embedded device where they should run on. This is working very well. In those Images the rootfs is included. Due to some research I'd like to look into that ...
3
votes
1answer
184 views

How can I preview the GRUB2 boot screen?

I've been reading a tutorial that shows how to set the background image that will be displayed behind the GRUB2 boot options menu. However, I am concerned that the text might not be visible against ...
3
votes
1answer
461 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 ...
3
votes
1answer
160 views

How to draw a single pixel in a terminal?

Until now I used characters to draw images, shapes etc in a terminal. Is it possible to draw a single pixel? Let's say: foo 1 1 red This will draw a red pixel at the coordinate (1, 1). Is there ...
3
votes
1answer
367 views

PNG viewer that can display text chunks metadata

Is there a PNG viewer that can display text chunk metadata? Ideally, I'd like a way to view arbitrary chunks.
2
votes
1answer
977 views

Shell script filtering through jpg files attributes

I'm trying to find a way to filter through thousands of jpg files, and keep only the files with a certain attribute (such as the camera brand with which the picture was captured). How can I do so?
2
votes
2answers
37 views

TIFFReadDirectory warning: unknown field

When trying to view tif image files in feh, the following pair of error messages is printed to stderr: TIFFReadDirectory: Warning, Unknown field with tag 37553 (0x92b1) encountered. ...
2
votes
2answers
391 views

How to get JPEG thumbnails quickly

My camera is very basic (understatement), but it does have one notable feature: its thumbnail mode is impressively fast; it loads a screenful of 9 thumbnails in less than a quarter of a second. Now, ...
2
votes
2answers
608 views

Image viewer for multiple images

Is there any image viewer (like eog) for linux which can do the following: Show 2 (3 or 4) images of a directory with maximal possible sizes on one page at the same time. When I click "next", it ...
2
votes
2answers
34 views

How can I automatically create a document that allows me to compare a list of 4 .png files side-by-side?

So I have a list of 4 .png files, and I'd like to auto-pipe this to some document that puts them all side-by-side for easy comparison. I'm thinking of automatically putting them in a HTML file. So ...
2
votes
6answers
373 views

Can I see images and watch movies inside the terminal emulator

Can I see images and watch movies inside the terminal emulator? In case of virtual console I can do it via framebuffer, but what about terminal emulators?
2
votes
1answer
2k 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
2
votes
1answer
260 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 ...
2
votes
1answer
527 views

Does truecrypt leave behind temporary files

I've I have some scans of sensitive documents in image format such as jpg png etc. When I open up the folder containing them which is in a truecrypt file, will nautilus create a temporary version of ...
2
votes
1answer
45 views

Find Largest Image Dimensions in Folder

I need a command which will allow me to search a folder of images for the images with the biggest width and the biggest height. As of now I'm using XNViewMP to find this info, but I'd like a faster ...