Something related to visual data files

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2
votes
1answer
34 views

Setting image for i3-lock: “Could not load image x: out of memory”

I use this command for locking screen: i3lock -i /home/freyja/pics/owl.jpg The screen is locked, but there is no picture (only white background). When called from console the command says: Could ...
2
votes
2answers
101 views

How to split an image vertically using the comand line?

So, say I have a large 800x5000 image, how would I split that into 5 separate images with dimensions 800x1000 using the command line?
4
votes
1answer
51 views

Ways to convert and combine image files into a pdf file?

I have about 190 image files (png and jpg) in a directory. For more information, each image has 2500 x 3072 pixels, and about 500KB. I use the command convert from ImageMagik to convert and combine ...
2
votes
1answer
40 views

Sorting image files based on whether the content is picture or graphics: updating an older solution?

Someone wanted to sort files in a directory according to whether the files are pictures(camera) vs. design graphics. On Stackoverflow, there is an older solution/proof-of-concept involving the ...
0
votes
4answers
38 views

Image viewer with auto-reload on file change?

Are there any image viewers which will auto reload the view when the image file is written to? I normally use debian variations of linux.
0
votes
1answer
23 views

running script with -o argument pointing to mount point of sd-card

I was trying to install Angstrom Linux on Colibri T_30 board---but I am stuck at one point where it specifies that run update.sh script with optional -o argument pointing to mount point of ...
0
votes
0answers
15 views

Match the palette color property output list from Imagemagick convert with online color descriptions?

I use ImageMagick to extract a linear swatch of unique colors from some image to explore different color palettes; list properties of these colors; and make an approximation of the "average" color - ...
2
votes
1answer
53 views

Convert all non-JPG images to JPGs

What command can I use to convert all images in a folder which are not JPGs (PNG and BMP primarily) to JPG? I'd also like the conversion quality to be 100%. And I'd like the converted images to ...
1
vote
1answer
33 views

How to add searchable text to an image?

I need to add text to an image (original image can be jpg, gif, or bmp) file, how can I do it? I added the texts with shutter to an jpg and converted to pdf. Tesseract has not been able to turn the ...
2
votes
1answer
654 views

Capture raw image from V4L (webcam) device

I'm using a Raspberry pi to monitor a self-service fridge. When the door opens, a shell script is being executed to capture pictures until the door closes again. The problem, however, is the speed of ...
12
votes
6answers
22k 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 ...
7
votes
1answer
158 views

Combine multiple PDF files into one (arranged in a matrix)

Having a set of PDF files, lets say: in-01.pdf, in-02.pdf, in-03.pdf, ... I would like to combine all of them into a single one, forming an M x N matrix. The command montage allows for doing so (M ...
0
votes
0answers
31 views

Get color depth of BMP

I have a .bmp file, and I want to check the color depth. How do I do this? I have tried both file and convert, but they give different outputs, so I don't know which is right.
9
votes
2answers
4k 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 ...
0
votes
1answer
42 views

How can I make a montage which seamlessly tiles the same one image file?

I would like to preview how one single image (768x1024 px .tiff) would look as a pattern by generating an output file where it is tiled in such and such a way (4x4, 5x5, etc.). The image should be ...
2
votes
1answer
57 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 ...
0
votes
2answers
69 views

How to copy text from an image in a pdf file?

I can view a pdf image with text using the evince document viewer, however I cannot select the text in the image to copy and paste. How do I copy text from an image in a pdf file?
1
vote
1answer
46 views

Merging pairs of TIFF files in a directory

For example, say a given directory has 1000 TIFF files named sample1.TIFF, sample2.TIFF, etc., all the way to sample1000.TIFF. I want to merge each pair of files: sample1.TIFF and sample2.TIFF are ...
0
votes
3answers
57 views

Software for image files analysis

Is there some program to analyze files, especially image files, for Linux, with functionality similar to hex editors, which will show what bytes changed after I paint some area of the image and etc.
2
votes
1answer
19 views

feh: maintain zoom setting

When browsing through the images in a directory with feh, the magnification can be changed by use of the up/down arrow keys, but the setting is lost as soon as the next image in the series is loaded. ...
2
votes
2answers
118 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. ...
5
votes
3answers
931 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 ...
0
votes
0answers
49 views

Can't get Kernel image

I am trying to write the kernel image in my ARM, I am using an ARMStone a9 here is the information about this board: http://www.fs-net.de/en/products/armstone/armstonea9/ The problem is that I am ...
2
votes
1answer
139 views

mounting/converting v2i image in linux

Is it possible to mount a v2i image in linux? Is there any mount.v2i program? Or is there any convertion tool to convert v2i image to something else like iso ? How can i Mount/Convert a v2i image? ...
4
votes
4answers
178 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
1answer
233 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 ...
1
vote
2answers
335 views

displaying page 2 etc of multipage tiff

I have a multi-page TIFF file produced from scanning. When I open the file (Image Viewer), Next goes to the Next image file in the folder not the next image in the file. Is there a hidden option to ...
3
votes
1answer
188 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
148 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?
1
vote
1answer
229 views

Conversion from PNG to EPS

I would like to convert PNG images/graphs to EPS without losing even a bit on resolution. All the commands I tried (potrace, autotrace, convert, gimp) decrease the resolution quality.
6
votes
2answers
719 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 ...
3
votes
1answer
2k 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 ...
0
votes
1answer
433 views

How to display a .jpg file using fbi in a bash script for set amount of time and then execute the next command in the script

I am trying to use fbi in a bash script to display a series of .jpg images. But once fbi begins its process, it continues to cycle through the images and I only want to display each image once for a ...
1
vote
0answers
196 views

Using wget to dowload images in facebook conversations

This look a bit harder than usual. I'm a new wget user and i was thinking that maybe it's possible to somehow login into facebook and download images from a specific conversation. I mean, i'd like ...
1
vote
1answer
252 views

gphoto2 hook scripts - a guide?

I posted this on raspberrypi.stackexchange but was directed here. I'm new to Linux / Unix, and I'm trying to get a tether / display script going with gphoto2. gphoto2 --capture-tethered ...
5
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 ...
2
votes
0answers
38 views

Image set compression

Is there a good open source (not exclusive to Linux) for compression of a set of similar images? I have thousands of documents scanned but I do not access them often. The documents are forms, with ...
2
votes
2answers
572 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, ...
1
vote
3answers
416 views

Why does boot from SD card with my custom kernel result in “VFS: Cannot open root device”?

I'm using an embedded board ARM9 SAM9G25. I want to boot from SD card. When I build a linux kernel with a built-in rootfs (initramfs) then it boots. I want to separate the kernel from rootfs and I ...
2
votes
2answers
38 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
1answer
75 views

Apply image perspective through batch mode in gimp

I need to perform image perspective operation from command line? Is there any place where documentation is provided properly. I have asked this question on stack overflow, you can check here. If any ...
1
vote
0answers
57 views

pdf viewer for text documents saved as images — bad rendering

The situation I have in mind is a .pdf document obtained from a scan, or at least such that some readers view it as an image (as opposed to text) and render it badly (see the screenshot below) My ...
1
vote
1answer
400 views

Delete all jpg in a folder that are smaller than specific width/heigth [duplicate]

I have restored with photorec about 7.500 jpg's. I have moved them all in one folder. A big portion of them is thumbnails. But i can't just go on and delete lets say all of them that are smaller than ...
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, ...
4
votes
1answer
222 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 ...
1
vote
1answer
2k views

How to put a background image on GRUB?

I found some images on the internet about some GRUBs with a background image, I would like to do something like that too, but how? I have GRUB2.
4
votes
1answer
632 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 ...
3
votes
1answer
238 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
6answers
676 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?
3
votes
1answer
404 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.