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

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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
30 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 ...
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0answers
24 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 ...
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1answer
33 views

Default way to Convert .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. You should not need external tool do it. What is the ...
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0answers
10 views

Why g3data of apt-get is not working in 16.04?

I do g3data image.png I put data points on the graph. The button Export point data remains all the time inactive. Screenshot Why g3data is not working in Ubuntu 16.04?
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1answer
36 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
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9 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 ...
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1answer
34 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
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1answer
31 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 ...
2
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1answer
61 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 ...
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0answers
56 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 ...
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3answers
144 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 ...
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2answers
222 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 ...
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3answers
490 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.
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1answer
61 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, ...
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1answer
38 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 ...
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2answers
130 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?
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28 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. ...
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1answer
42 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. ...
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1answer
2k 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 ...
2
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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
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1answer
54 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
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1answer
773 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 ...
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2answers
59 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 ...
2
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2answers
203 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
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1answer
43 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 ...
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1answer
158 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 ...
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2answers
11k 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 ...
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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 ...
0
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1answer
3k 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 ...
2
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2answers
628 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. ...
2
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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 ...
2
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0answers
123 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 ...
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3answers
849 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, ...
0
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1answer
463 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
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1answer
341 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 ...
2
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1answer
536 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?
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1answer
505 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: ...
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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
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1answer
50 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 ...
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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 ...
4
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2answers
14k 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
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1answer
232 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
197 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
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1answer
771 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
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1answer
2k 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 ...
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3answers
9k 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?
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3answers
347 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 ...
7
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3answers
3k views

Mass conversion of images to GIF

I have created over 600 images from a simulation I ran. I want to convert these images into a GIF format. Can you provide me a way to do so and one that allows me to show each image for >1second.
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2answers
129 views

Are there softwares available on Ubuntu for the conversion of a series of image files into an animated gif file?

Before you mention this question Tool to convert a sequence of numbered PNG files to an animated GIF? I would like to say I'm a total noob when it comes to ubuntu (I know I have 1375 rep but I have ...