Something related to visual data files

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5
votes
2answers
685 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
2answers
94 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 ...
0
votes
1answer
43 views

Resizing/Processing only images in folder larger than specified height? [duplicate]

I have a folder with JPG images, some of which have a height dimension larger than 1900 pixels. I need a command that will ignore the images with a height dimension lower than 1900 pixels, while ...
1
vote
2answers
62 views

shell script to get collect pixel size of image

I'm trying to create shell script that returns the largest picture in total dimensions pixel size? For example: I have many directory over 7000+, each directory have images: dir_1/ picture_1.png = ...
3
votes
1answer
517 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
2answers
109 views

How to batch resize all images in a folder (including subfolders)?

I have huge, 12GB, gallery on the server, full of images in various subfolders. Those files are too big and not used in full resolution. I need to resize all the images down to 820px wide (keeping ...
0
votes
3answers
41 views

How can you determine image size from a command line?

I want to keep a collection of images (which arrive via RSS) on a shared network drive (for anyone to have SFW desktop backgrounds). However, some of the images that arrive are absurdly small (85x75, ...
0
votes
0answers
15 views

viewing 16 bit images in feh

I prefer to view images with feh because of its rendering speed. However, 16 bit tiff image files appear completely black when loaded by this application. Are such images amenable to display by feh ...
7
votes
2answers
478 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, ...
0
votes
1answer
53 views

Imagemagick mogrify with shadow geometry

How can I specify the size of a shadow with imagemagick? This command works: montage foo.jpg bar.jpg foobar.jpg -background lightgray -geometry 1031x1642+57+57 -shadow -monitor -tile 3x1 out.png ...
1
vote
0answers
23 views

To plot 7x10 pictures for review in video

Assume you have 77777 pictures. You want to review them and their differences: have 7x10 pictures without margins to have an image viewer where the minimum browse time can be less than 1.0 s such ...
0
votes
1answer
43 views

Linux Bash resize image half the size (linear)

I'm trying to come up with a way of resizing images in a directory by half (longways). I have already used: mogrify -resize 50% * It does resize all the image in the file but width and length ...
2
votes
2answers
140 views

Script to determine if files are Images

I would like to create a shell script that will check to make sure all files in a directory are image files. We recently had an issue where a hacker was able to generate a file in a directory and ...
3
votes
2answers
86 views

Terminal with image support

Is it possible to have sort of a hybrid terminal that can display isolated images in one or more designated panes? As I understand it, modern terms are graphical emulations anyway, so obviously they ...
3
votes
1answer
258 views

How to install BPG (Better Portable Graphics) on Linux Mint 17?

How do I install BPG (Better Portable Graphics) on Linux Mint 17? I downloaded the tar.gz file from Fabrice Bellard's website. The ReadMe file says, Edit the Makefile to change the compile ...
0
votes
2answers
64 views

How to extract images from video file?

I mean, how to generate images files from a video like screenshots.
0
votes
2answers
112 views

Downloading images from csv file to a folder based on its id

I have a csv-file that looks like this (short example, there are actually about 20 images per id). ...
1
vote
0answers
30 views

save transparent web images on linux mint

I have just installed Linux Mint (this is my first day using). I'm using Google chrome and search Google images for a transparent png, for example an icon with no background. I am right click saving ...
18
votes
7answers
45k 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 ...
16
votes
4answers
1k views

Copy image from command-line to clipboard

Is there a way in a bash to copy a picture to the clipboard? For example if there is a picture mypic.png I want to have a command like clipcopy mypic.png such that I can go for example to inkscape ...
5
votes
4answers
4k 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 ...
3
votes
1answer
68 views

Digital Photograph Forensics Software for Linux

Is there any forensics software that can handle digital Photograph for linux ? An opensource software is preferable
2
votes
1answer
49 views

How to extract comment from ppm file?

I have ppm file X.ppm with comment : xxd X.ppm|head -10 0000000: 5036 0a23 206d 6967 6874 796d 616e 6465 P6.# mightymande 0000010: 6c20 2d32 2e38 3034 3132 3232 3037 3833 l -2.80412220783 0000020: ...
1
vote
1answer
167 views

How to add a software to the list under “open with” other applications in Linux Mint 16?

I want to add a software to the "open with" other applications list that drops down after clicking on a photo to open. I installed Photoscape on my Linux Mint 16 system but it does not show in the ...
4
votes
5answers
3k 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 ...
1
vote
1answer
59 views

Replacing a partition within a .img with another one

I have 2 .img files (embedded Linux images, each with 2 partitions- a boot partition and a rootfs). I need to replace the rootfs partition in one with the other's. How can I do this In the .imgs ...
1
vote
0answers
23 views

OCR for getting text from an image. Error management

I want to use an OCR program to obtain some text in an image. The text is not black on white so I don't know if it will be possible. wget -q -O image ...
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 ...
0
votes
1answer
58 views

Clonezilla fails while cloning/imaging the entire HDD

I am using Clonezilla Live DVD to image my entire HDD consisting of several partitions. An overview of the partitions can be seen in the following excerpt from the log file of Clonezilla: Machine: ...
4
votes
2answers
652 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 ...
2
votes
1answer
619 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
434 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
177 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
58 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 ...
1
vote
4answers
435 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
55 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
95 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 - ...
1
vote
1answer
63 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
1k 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 ...
8
votes
1answer
472 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
112 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.
14
votes
2answers
6k 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
136 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
102 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
138 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
150 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
134 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
59 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
457 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. ...
7
votes
3answers
2k 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 ...