11
votes
2answers
823 views

How to merge images in a single PDF file

I have some images which I want to merge. The meaning of merge is that, if I have 5 images, I want to put hem near each other is this way: I want to do that command line. For example the command ...
0
votes
1answer
33 views

From gnome-screenshot command line, how do you predefine the are?

So gnome-screenshot has the following options: tim@Hairy14:~$ gnome-screenshot --help Usage: gnome-screenshot [OPTION…] Take a picture of the screen Help Options: -h, --help ...
1
vote
1answer
173 views

How to improve tesseract performance?

By all accounts, tesseract is superb. However, my results are dismal. I need to convert (digital, as opposed to from a book) text that I only have as a png. For instance: 2 3 academics 1 1711 2 ...
5
votes
1answer
4k views

How to crop borders/white spaces from image? [duplicate]

I have a lot of images which have white borders around it. I would like to crop those borders in one batch, preferably from command line. I believe that it can be done with ImageMagick, but I couldn't ...
2
votes
1answer
1k views

How do I set up a background Image for console in ubuntu

Some of you may know this from opensuse. There the console is able to have a background. Is Ubuntu also able to have a backround image outside the x window system?
3
votes
2answers
3k views

How to optimize whole folder with jpegtran?

back in Windows I would use jpegtran program to process all of the images in a folder. However, there doesn't seem to be an application in Ubuntu with UI for performing the same task. Obviously, I ...
13
votes
2answers
11k views

How to resize an image through the terminal?

I have Ubuntu 10.04. I have converted image through terminal using the following command: convert myfigure.png myfigure.jpg. But I want to resize the height and width of the converted image. Is ...
2
votes
1answer
476 views

How to find and download a image file of specific resolution using wget?

How can I find and download an image file of specific resolution e.g.: 100x99 whose file name is not known using wget? Thanks in advance.
3
votes
1answer
663 views

Extracting images from video in 1 minute intervals

I would like to extract images from a video Exp01.avi, the video is 25 minutes long. I want the images to be extracted from the video after every 1 minute interval. Please someone tell me how to do ...
7
votes
2answers
2k views

How to find all images with a certain pixel size using commandline?

I am trying to find all JPG images within a folder with subfolders that have either width or hight below 300px. This way I want to detect old thumbnails and delete them. For sure I can find all ...
5
votes
1answer
2k views

How can I determine the size of an image from the command line?

I have an image called ZEAKR.jpg. How can I know its size and format from the command line?
0
votes
1answer
547 views

Read graphics info in command line?

Is there a command that can read image attributes , I only need it's height / width.
4
votes
2answers
165 views

How can i put 4 images on a A4 image via the console

I am working on a Photo-booth installation, and i want to take 4 photos (this i have figured out), and then combine them so they are on a a4 paper sheet ready to be printed. I need to do this through ...
1
vote
1answer
215 views

Create movies from images and sound files scripting transitions using the console?

I need a program without GUI that accepts some kind of scripting language capable of transitions (fade, scale...) and generates movie files like avi, mkv... from images like jpg, png and audio like ...
2
votes
1answer
3k views

Converting images to PPM P3 (using convert command)

I was wondering if there is a quick way to convert a given image to a PPM image that is in version P3. The convert command returns it in P6 by default. Thanks!
0
votes
1answer
93 views

Color-leveling an image via command-line

From a script, I'm trying to apply some color levels to a grayscale .tiff image (the same as I would do in Gimp). I've tried using ImageMagick's convert tool: convert input.tiff -level 102,200,0.85 ...
4
votes
2answers
1k views

How to bulk rename files after modification date?

I've got some photos with quite random names, but the dates (not exif, but when they were last edited) are correct. I'd like to rename them in that order, preferably so that the first photo is named ...
0
votes
1answer
490 views

Batch Image Crop to 6x4

I have a bunch of images which are not 6x4 images. How can I crop all the images to 6x4 and keep to the best quality possible at the same time?
3
votes
2answers
3k views

image viewer: png vs gif

I have a bunch of files that have .png extension. However, some of them are actually gif files. Any of the files, I can open them w/ gimp or view them in firefox, but when I try to open them with ...
4
votes
1answer
735 views

How can I automate creation of videos from an image and an audio track?

There are many videos on sites such as Youtube that simply contain album art and an audio track. This is easy to do with tools such as openshot or pitivi but it is time consuming. Is there a script or ...
2
votes
2answers
789 views

A script to achieve optimum image compression from command line tools

I want to process images in batched for uploading onto websites. I am looking for a script which will provide optimum compression with 1024x768 size using commandline tools like image magic etc. ...