Manipulating and processing static images, techniques and software for such task should use this tag.

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3
votes
3answers
88 views

How do I capture a screenshot of a window, and all the windows on top of it?

I'm using screenshots as regression tests for GUI software. Before deploying each new version, a series of automatic tasks is run against the old and the new version, screenshots are generated after ...
85
votes
7answers
93k views

Simple image editor?

I want something similar to "preview" in macs. For example: I want an image editor that ONLY does simple adjustments like increase/decrease contrast, saturation, exposure, color tinting.... rotate, ...
1
vote
1answer
33 views

Resizing pictures

Currently running Ubuntu 15.04. I am trying to resize a set of photos which original size of each is 3906*2602. Whether I try with darktable or mogrify specifying 1920*1080 I end up with 1621*1080. ...
52
votes
6answers
39k views

How can I scale all images in a folder to the same width?

I want to scale all images in a given folder to the same width (but different appropriately scaled heights). How can I do this using a GUI-based or command-line tool? For bonus points, is it ...
8
votes
2answers
123 views

ImageMagick convert and low RAM

Please consider the following command for the imagemagick package: sudo convert -resize 460x200 /path/to/test1.jpg /path/to/test2.jpg Now test1.jpg is a fairly large image (12.5MB), but not unheard ...
3
votes
3answers
951 views

Convert emf to PNG image using command line

Is there any command line tool available to convert emf to png images? I tried the convert utility from ImageMagick, but it says decoder for emf not found
0
votes
3answers
58 views

How to convert .jpg or .png image to .raw

Is there any software that converts JPEG or PNG to RAW? I have been looking around and just found a few software that make the inverse anyway.
17
votes
3answers
24k views

How can I split an animated .gif file into its component frames?

How can I easily split an animated .gif file? I want to see each frame. I would really prefer to not to export every frame to a directory. I'd like to view them individually in one application if ...
1
vote
1answer
43 views

Scale down image such that it fills a square of 100x100

I want to create thumbnails for all images of a folder. I also want the images to fit in a square of 100x100 pixels. So after scaling the images down, while the smaller side needs to be 100 pixels, ...
-1
votes
1answer
25 views

Is there any “Background Removal” Program in Ubuntu besides GIMP?

I need to remove background from images locally. I use photoshop in windows and GIMP in Linux but GIMP is too much for me for simple background removal purpose. Is there any easier alternatives for ...
91
votes
14answers
112k views

How to easily resize images?

I would like to know how to re-size images in Ubuntu. What is the easiest tool to do so?
5
votes
3answers
8k views

How can I remove the gray-scale page background of a PDF document scan while preserving the text? (Binarization)

My PDF contains 600 pages with images of text. It has 2 layers. Layer 1: Background colour image Layer 2: Text image I would like to remove all background image layers in the total PDF file as ...
0
votes
2answers
59 views

how to convert .svg image to .png? [duplicate]

I would like to change the color of some SVG pictures and then save them as PNG images. I have installed GIMP. I am running Ubuntu 14.04. How can I do that?
0
votes
0answers
25 views

Bruteforce download and convert images

So, I'm basically trying to bruteforce download from a server that doesn't seem to support directory listing or FTP. I know the image files are all png and have numeric filenames ranging from 0-500. ...
0
votes
1answer
948 views

How can I install a package from Octave Forge?

How can I install a package from Octave Forge? I am using imresize function and I get this error warning: the 'imresize' function belongs to the image package from Octave Forge which seems to not ...
18
votes
1answer
19k views

How to crop borders/white spaces from image?

I have a lot of images which have white borders around them. I would like to crop those borders all at once, preferably from command line. I believe that it can be done with ImageMagick, but I ...
2
votes
2answers
387 views

can't install cpan module GD

Since I failed to install Image::Magick on my non-GUI Ubuntu server Ubuntu 14.04.2 LTS (read about it here), I tried to install another image-manupulation tool that can be used from a perl-script: GD. ...
0
votes
2answers
45 views

Does digiKam supports RAW files of Canon G16?

When I open an RAW file of my Canon G16 camera (.cr2 suffix) with digiKam 3.5.0, the colors are wrong and there are black margins. What settings must be done in digiKam to process the file or does ...
6
votes
2answers
4k views

What software can display raw bitmaps on Linux?

I have a raw file but I don't know the pixel format or the width of the image. I need a tool that can quickly display the data and allow me to try different formats easily. An example of such a tool ...
2
votes
1answer
11 views

Convert image color channels?

So, I have an image and I want to be able to set the Red and Blue values so they're equal to the value of the Green in the image. This is because the image is entirely Green and I want it to appear ...
3
votes
1answer
40 views

Gimp color tools don't work

When I try to run color modification tools like right-click -> Colors -> Colorize (or any of the color tools, Brightness / Contrast, Hue / Saturation, etc), nothing happens: When I click Colorize ...
0
votes
1answer
234 views

How to create JPG file in RawTherapee without changing original RAW

With RawTherapee 4.2, I want to edit the image and export it as jpg file, but without touching the original RAW file. Is it possible? At the moment I copy the RAW, edit it and put it to the queue to ...
2
votes
2answers
129 views

Convert folder with tiff to jpg by using mozjpg

I hear that mozjpeg is a nice jpeg compressor from Mozilla. How can I convert my folder with *.tiff to jpg from terminal using mozjpeg?
2
votes
1answer
30 views

How can I get ImageJ to open all files in the same session?

When I open more than one image from Nautilus in ImageJ they all open in a new session. If I already have one session running and open a new file in Nautilus ImageJ also creates a new session. How can ...
0
votes
1answer
2k views

building caffe: failed to see hdf5.h

Hello caffe is a lib for deeplearning. When trying to build that lib under 15.04, the compilation fails with the message: :~/App/caffe$ make all PROTOC src/caffe/proto/caffe.proto CXX ...
-1
votes
1answer
118 views

Is there a linux command to bulk optimize several image files in just one step?

I have a bunch of images in a folder: images/image1.jpg images/image2.jpg ... These images are not optimized for the web. Just wondering if is there a linux command to bulk optimize those images ...
18
votes
2answers
6k views

How can I turn photos of paper documents into a scanned document?

My scanner has broken! I do have a good camera though so I've taken a few photos of the documents I want to scan... However they look like photos of paper, not scanned documents: Images aren't flat ...
26
votes
7answers
104k views

How do I install python imaging library (PIL)?

How do I install the python imaging library (PIL) on Ubuntu? I tried doing sudo apt-get install python-imaging but now when i run python selftest.py (a script I got from somewhere on the ...
9
votes
1answer
798 views

How to convert a PNG strip to a GIF?

So, I made this animation in a program, however, it doesn't seem to support exporting as a PNG sequence so I could convert it to a GIF. The animation is over 100 frames so saving each image one-by-one ...
17
votes
3answers
786 views

How can I take a screenshot from a window, with customizable margins

I need a tool that will do the following: selecting a window, will make a screenshot of that window with a x padding, like in the following image: So, in most of the cases x will be equal with y, ...
2
votes
2answers
1k views

Merging multiple images into one document and add any caption/label to them

I have multiple jpg and png images. I would like to combine them within one document (ODT/PDF/RTF). It can be easily done by means of following command: convert *.png allTogether.pdf However, there ...
5
votes
3answers
7k views

How to convert CR2 to JPG or PNG?

I need to convert a lot of CR2 photos to either JPG or PNG, no editing. How to do this?
16
votes
3answers
2k views

Stitch scanned images using CLI

I have scanned a newspaper article which was larger than the scanner glass. Each page was scanned twice: the top and the bottom parts, where the middle part appeared in both images. Is there a way to ...
2
votes
0answers
105 views

Image manager (picasa like)

I'm trying to find an image viewer/manager which should have two main features: Its fast in displaying/load images. gpicview is fair good at this task but doesn't have the second point... I need a ...
0
votes
1answer
366 views

Faststone Image Resizer equivalent for Ubuntu

I am moving over to Ubuntu from windows (gradually) and have used Faststone Image Resizer for windows for a while and found it very good, Is there an equivalent piece of software for Ubuntu that ...
0
votes
1answer
275 views

Auto rotate scanned text

How to automatically rotate a scanned image? Even if you insert the paper into the scanned carefully. About one degree rotation is left. Is here no way to automatically rotate the scanned image? I ...
1
vote
1answer
48 views

How to find out what an action is called in gimp's Batch Image Manipulation?

I want to both zealous crop and remove image transparency for a bunch of files. I know how to start the batch job and I was able to find the action plug-in-zealouscrop for--duh--zeahlous crop. Yet I ...
2
votes
1answer
476 views

Resize and arrange pictures automatically on a canvas

I want to make a template for printing 9 cards of 63 x 88 mm on a DIN A4 paper I want to load the images so that they re-size themselves and I can print them directly. How can I do that?
2
votes
2answers
10k views

PIL install in Ubuntu 14.04.1 LTS

Followed the steps How do I install python imaging library (PIL)? for pre-setup libraries to install PIL on Ubuntu 14.04. However when I run pip install PIL --allow-external PIL --allow-unverified PIL ...
-2
votes
1answer
295 views

Ubuntu 13.10 - desktop freezes when opening or importing a large size image?

I tried to add a raster layer to my QGiS dufour(memory size of the image was 52 MB) and the desktop freezed. It is not just QGIS,I have also tried to open this image via image viewer and it has also ...
0
votes
1answer
436 views

can't convert my image by imagemagick on ubuntu 14.04 LTS

How to easily resize images? I want to use that method on ubuntu 14.04 LTS to convert my image First install imagemagick sudo apt-get install imagemagick Open a terminal and run this command: ...
0
votes
1answer
352 views

RAW exports wrong (Photivo, Rawtherapee)

I am using Ubuntu 13.10. I started shooting my images in RAW (NEF) and downloaded Photivo to process them. While working in Photivo, everything is OK. The problem is when you save the rendered image. ...
48
votes
9answers
21k views

Tool to add shapes, annotations and text using templates to images

Often I need to annotate (draw some arrows, lines, basic shapes like squares, ellipses etc and enter some text) on top of pictures (JPG, PNG images) and screenshots (again png images). I would also ...
21
votes
1answer
7k views

Does “diff” exist for images?

You can compare two text files very easy with diff and even better with meld: If you use diff for images, you get an example like this: $ diff zivi-besch.tif zivildienst.tif Binary files ...
12
votes
2answers
1k 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 ...
2
votes
1answer
214 views

Make a grid of images, then rotate and crop it

So I have a few thousand thumbnails that I want to stitch together in a slightly tilted grid. I figure that's not going to be the most obvious thing in the world to understand so here's an artists ...
3
votes
1answer
183 views

Why does my wallpaper look slightly desaturated?

Here's a screenshot of the original image overlaid on top of the same image set as wallpaper. The original is far more saturated. Is this a bug or is there a setting I can tweak to get my wallpaper ...
1
vote
1answer
589 views

Which package should I choose for the convert command?

Typing convert on my system (14.04) produces: The program 'convert' can be found in the following packages: * imagemagick * graphicsmagick-imagemagick-compat Why are there 2 packages providing ...
3
votes
1answer
1k views

How do I install JavaTM Advanced Imaging API v1.1.3 on Ubuntu 14.04

I'm trying compare images as described on this Website but therefor I need to have JAI installed. I have downloaded the file jai-1_1_3-lib-linux-amd64.tar.gz from here. I've also looked into the ...
2
votes
2answers
259 views

Any feature in ubuntu by which we can lossless compress images in bulk

I am looking for a way in which I can do a lossless compression of all images in a directory in a batch process. I don't want images to loose quality. I am running this website Winni.in, for this if ...