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

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1answer
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+100

How Open Specific Part of .png Figure in Ubuntu's Terminal?

Situation: start browsing of the figures at width 1:960 and height full in Terminal Motivation: Ubuntu's default image viewer opens the figure at full width and full height, making the browsing of ...
58
votes
7answers
49k 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 ...
2
votes
1answer
20 views

Is there a good software to correct scanner defects?

I have an old scanner that apparently has some defects. When I connected it to my Linux laptop and scanned a white A4 paper I got this. But with "Windows Fax and Scan" I got this which is almost ...
21
votes
2answers
15k 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 ...
3
votes
2answers
48 views

GoPro fisheye lens correction FREE software

What can I use on Ubuntu (or Windows) to correct GoPro fishlens effect on a video (or at least image) using FREE software? I dont have Photoshop or After Effects at hand.
2
votes
2answers
73 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, ...
0
votes
1answer
120 views

How to Convert/Edit .mp4 file to .gif in Ubuntu 16.04?

I would like to do this by default tools and scripting. The logic is just to take pictures from the video and store them in the .gif format. Editing Do sudo apt-get install kazam pitivi openshot ...
0
votes
1answer
45 views

How to Setup Axis Points in g3data of 16.04's apt-get?

I do g3data image.png. I start by clicking Set point X1 on X axis (1). I setup axis points unsuccessfully Set axis points X1 and press second click Set axis points Y1 and press second click Set ...
103
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13answers
137k 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?
6
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2answers
613 views

Is there an image editing software that can open Microsoft DirectDraw Surface files in Ubuntu?

I need an editor that can open, save and edit Microsoft DirectDraw Surface (.dds) files. I know Paint.NET can open them, but well, it's .NET, so... GIMP doesn't seem to open them and I can't find a ...
1
vote
1answer
115 views

Why are the images produced by pdfimages different when using the -all flag?

It's my understanding that pdfimages -all extracts images from PDFs in their native formats. Therefore, I expected that the JPG (lossy) images extracted from that command would have the same pixel ...
2
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0answers
49 views

Why are image files from pdfimages bigger than the PDFs they came from?

On Ubuntu 16.04, pdfimages -all produces image files whose sum of storage use is greater than the PDF files from which they came. Is there any explanation for this? How can I extract image files ...
0
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0answers
33 views

run processing linux standalone in ubunto

I am using Simpleopenni V.1.96 library in Processing 2.2.1. I wrote a sketch utilizing Simpleopenni library in processing. Although this sketch is running perfectly and the exported files are ...
0
votes
1answer
4k views

Building Caffe: Failed to see hdf5.h

Hello Caffe is a library for deeplearning. When trying to build that library under Ubuntu 15.04, the compilation fails with the message: :~/App/caffe$ make all PROTOC src/caffe/proto/caffe.proto CXX ...
1
vote
1answer
44 views

Auto Photo Crop

I want to crop photo black background with command line This command didn't help: convert input.png -trim output.png My image
0
votes
0answers
12 views

How to extract text from an image

I am doing project on extraction of video into text and image into text. I have got code for video to text extraction. But not able to get code for image extraction, i am using netbeans software for ...
51
votes
9answers
24k 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 ...
2
votes
3answers
380 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 ...
4
votes
1answer
39 views

Recommendations for a simple screenshot annotation tool?

I am looking for a simple screenshot annotation tool with the following features: Crop Resize Blur Draw shapes and lines Add text
17
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2answers
15k views

Resize images to specific height value in ImageMagick?

I've looked around for this, and can't find an easily implemented solution. Currently I'm working on an application that deals with panoramas. As they come out of the batch stitch process, the ...
2
votes
1answer
72 views

How to batch rename JPEG files to image date, adding a count that resets for each day?

I'm using pyrenamer with my photo collection and it works great except for one issue. I want it to rename photos by their date taken metadata, with a three-digit number at the end. Each folder in my ...
0
votes
1answer
43 views

Program with particular MS Paint feature?

I have been looking for an image editing program with a extremely convenient feature from Microsoft Paint. MS Paint allows you to hold the right mouse button while erasing over a region to erase ONLY ...
0
votes
1answer
3k 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 ...
0
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0answers
85 views

convert multiple jpg images to png changing to transparent background

I need to iterate over a folder with lot of logo images (in JPG) and convert them to PNG and change the white backgroun to a transparent one. Is there a linux command to convert jpg to png and ...
4
votes
3answers
190 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 ...
98
votes
7answers
118k 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
57 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. ...
10
votes
2answers
328 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 ...
5
votes
3answers
1k 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
1k 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.
25
votes
3answers
29k 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
votes
1answer
42 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 it....
7
votes
3answers
10k 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
177 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
30 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. ...
23
votes
1answer
24k 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 couldn'...
2
votes
2answers
825 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
74 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
5k 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
16 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
63 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
1k 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
231 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
53 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
188 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 ...
30
votes
7answers
123k 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 http:/...
9
votes
1answer
1k 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
876 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
2k 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 ...
8
votes
3answers
10k 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?