Questions tagged [image-processing]
Manipulating and processing static images, techniques and software for such tasks.
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Is there a program to make an image sharper?
A friend sent me a picture from 1980. It's not that clear. I was wondering if there was a program that can make it sharper?
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Software/tool for simple image stitching/mosaicking?
I have several images (more specifically: map tiles), which overlap one another to some degree (not 100%). I would want to automatically mosaic or stitch them into a single, homogeneous image.
One way ...
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How to move a file to the desktop using the terminal?
I want to add an image to the desktop to get information about it with exif, but I don't know how to add the image in desktop or how to copy it in a terminal.
I'm learning how to use the terminal and ...
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ImageMagick-6, how to adjust brightness of background only of scanned page, without touching the text
I have a pictures of scanned book, jpeg format. All pages have gray backround with some noise, due to grayscale mode used when scan. ImageMagick-6
Image info:
Resolution: 200x200
Colorspace: Gray
Type:...
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default Ubuntu lossy photo or photos compression method
I prefer to backup ~/Documents to a tar file and move that tar file to a removable solid state drive. After many years of collecting data, my tar file is approximately 4 GB which is nice since I can ...
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How to resize an image using ImageMagick
From How to easily resize images via command-line? I know I can use this command to resize an image in bash:
convert -resize 1024X768 source.png dest.jpg
But I'm stuck at only providing the width ...
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GNU Radio & feh - .jpg - No Imlib2 loader for that file format
I'm currently using the gr-satellites module on Ubuntu 20.04 with GNU Radio 3.10.
I'm new to all of this stuff so bear with me!
I am using a flowchart which creates a string of data decoded from a ....
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Batch convert multiple, specific images spread across dozens of folders
I have a list of JPG files, each located in different folders on my command line only server, that I need converted to PNG.
I know the simple command to convert them one-by-one using mogrify. But I ...
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How can I use montage to concatenate 3 images so that they form an "inverted triangle"?
I'm trying to use montage to concatenate 3 images so that 2 are placed on top and one on the bottom in the middle, so that the overall shape of the concatenated images is kind of like an inverted ...
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qmake problem with image converter on 22.04
I am trying to install "lcd-image-converter" onto my Ubuntu 22.04 only laptop but I cannot get qmake to work. Initially I kept getting the warning
qmake: could not exec '/usr/lib/x86_64-...
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What are the free Image processing tools available to manipulate image regions and entire pixels?
I am working on an image task where I have to manipulate the regions and pixels in images. I need the tool to do 3 major task:
Draw a rectangle box on the image
Pick any pixel colour from the image ...
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choosing the best pose for multiple people in a burst of similar photos
When I'm taking a photo of multiple people I usually take a bunch of quick photos in rapid succession in hopes that one of them will come out with everyone looking good. Not blinking, smiling if that'...
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Creating AVIF or HEIC images with transparency does not work with ImageMagick in 22.04
After upgrading to Ubuntu 22.04 I was pleasantly surprised that creating images with the new AVIF or HEIC formats was supported by default.
It's a breeze.
convert image.png image.avif
convert image....
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Image Corruption with Screenshots on Xubuntu 20.04
Whenever I try to upload an image that I saved with the Screenshot tool I get a corrupted looking image:
Example of corrupted image:
This seems to happen primarily when trying to upload/paste from ...
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Looking for software simimar to Cam Scanner
I have a lot of pictures from an historical archive. I need to crop them and to flatten them or to apply some perspective. Also, I'm looking for a software that allows me to work this with a great ...
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Automatically adding a number to each image in a directory
I want to display a number on top of each image, for all image files in a directory. In other words, each image is modified to contain a box containing a number. How can I automate this?
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How to save a QR code generated from the Electrum Wallet directly as a PNG or JPG file?
How do I save and send the QR code:
as a jpg or png?
There are ways to use gimp and/or xclip but I would hope that I can just save the QR code directly to file. Is this possible?
Notably, Windows ...
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What is "Software" field in image file properties?
When we right click on a jpg, a modal "Properties" form pops up. One of the tabs is named "Image".
On this tab, for most of my jpgs I see the following property names: Image Type, ...
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How can I run Photocollage on ubuntu 21.10?
Photocollage makes a bigger combined image from a number of specified inputs. Maybe not a straightforward program, but it used to work. Now, under Ubuntu 21.10 it segfaults immediately.
The program is ...
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Unable to see images or screenshots of applications in Software Center
In the Ubuntu Software Center app, I am unable to see images of each application or the screenshots:
Do you know how to resolve this issue?
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convert bunch of images to black and white with overwritting existing images
I need to convert a bunch of images (about 1000) to black and white
I used the following code:
convert *.bmp -monochrome ./*.bmp
but it produces new images. for example, I have file1.bmp, file2.bmp ...
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Crop a specific region from a series of images
I have a series of png-images (actually they are taken from an mp4-file).
I want to crop the same region from all the images I have taken.
What tool is best for that, such that I can define the region ...
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Nautilus resize to increase image size does not work with Scale option
With Ubuntu 2020.04.3 (Focal) I used Nautilus resize (i.e. right click the file in Nautilus) to increase the image's size using the Scale option. It creates a resized image file with the same number ...
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How to Convert 2 Image to 1 Page PDF With terminal?
I have a question, I have a problem, I want to change 2 images in 1 page pdf, how do I do it? I tried this command
convert *.jpg -resize 1240x1753 \
-extent 1240x1753 -gravity ...
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Get printer-ready black text on white background in scanned pdf files (remove grayscale or color background)
How can I turn photos of paper documents into a scanned document? is related, but not the same, as I'm talking about pdf files. The processing of images seems complicated in the answers under the ...
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How to convert 32MB of PNG file to 200Kbs without losing its colors
I have couple of images that are of 32MBs of size and I want to change their size from 32MBs to 100Kbs or any KBs of size without affecting its colours.
The commands I am trying are:
muhammad@muhammad-...
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Resize image to specific size
I know there are several ways to resize an image via the command line. Some of them are specified here. However, I was wondering whether there is a way to specify the size of the resized image, e.g. I ...
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How to bulk convert NEF/RAW images to JPG and remove original images?
I want to convert all NEF/RAW image files to an image format that could be easily opened without additional tools.
I thought about using ImageMagick's convert tool as mentioned in How can I convert a ....
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Windows style snipping tool on linux [closed]
Is there any snipping tool available on linux that's similar, or works similarly to win10's?
I mean, using a button combination to bring up the snipping tool box (like win10's win + shift + s) and ...
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Converting JFIF standard jpg files to EXIF standard jpg files in Ubuntu
How can I convert JFIF standard jpg images to EXIF standard jpg images in Ubuntu 20.04 preferably via command line if possible?
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How to resize images to either 900-pixels-height for vertical ones or 900-pixels-width for horizontal ones?
I have vertical (i.e. height > width) and horizontal (i.e. width > height) images.
I want to resize them to either 900-pixels-height vertical ones or 900-pixels-width ones based on their ...
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How do I batch convert images from sRGB to CMYK with a specific ICC profile?
I have a few hundred sRGB .tif files that require conversion to the CMYK FORGRA52 ICC profile. I tried using the software XnConvert, but this doesn't work (I don't think it supports conversion from ...
user984296
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How to automatically print multiple images per page?
Using an Ubuntu linux, what is the best/easiest way to print multiple images per page?
The global number of images and pages and the requested number of images per page should be dynamically chosen.
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Image viewer that can display all ICO sizes in a file
What are the image viewers available in Kubuntu that are able to display all ICO sizes in a file?
In Windows 7 Picture Viewer, I can use PAGE UP / PAGE DOWN to navigate on the "mipmaps" (or ...
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Application for simple and quick drawings
I am using Ubuntu 20.04 and I need you to suggest me an application to make simple and quick drawings.
I need the application to support common image formats and allow me to quickly add text, crop, ...
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How to view .HEIC photos from iPhone IOS 11+ on Ubuntu?
Friends send me email with attachments containing .HEIC pictures from their iPhone. How can I easily view these pictures on Ubuntu?
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how to convert 1280x720 jpg files to 640x240 ppm files using ImageMagick convert command?
I'm kind of in a hurry so I ask it here (I'll read the documentation later).
I have image files (width 1280, height 720, colored, jpg) and I want to first reduce the files to half both vertically and ...
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AVIF editor recommendation
Any recommendations for an image editor that can save in avif format? I am interested in outputting avif format files directly, without having to go through a secondary conversion process.
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Different amount of loss after same processing on any image in Ubuntu 18.04 vs Ubuntu 20.04
When I load an image via PIL in Python3, save it and then load it again, I get different values in Ubuntu 18.04.5 vs Ubuntu 20.04.1. I understand that re-saving an image will alter the values due to ...
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Software That Quickly Joins Images?
I often find that I have to join images together in a certain order, with a given number of rows and columns, so I am often finding myself using this website.
I was wondering if there is some software ...
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Use `ffplay` to play images in a folder by file orders
ffplay is a tool to play images inside a folder without saving a video. See command options here
But the problem is the filenames in my folder do not have a pattern, as they are sampled unevenly.
Let'...
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How to find image on screen
How to find coordinates of image file on screen, if it present on screen, from command line?
Its needed for bot what clicking button in firefox-flash, button have different coordinates from time to ...
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Zero-padding of output file names in gif->png conversion from ImageMagick
I have used this great answer to convert a .gif to its constituent frames:
convert foo.gif foo.png
My intention was to do some edits to the frames on the command line before combining them back as an ...
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Ubuntu 20.04 Desktop Not Treating .JPG Extension As An Image; Doesn't Create Thumbnail
My Ubuntu 20.04 desktop isn't treating .JPG as an image.
It doesn't create a thumbnail.
When I use video editing software Kdenlive only .jpg show.
But when I double click on a .JPG it does load as an ...
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How to check if an image has 2 bytes per pixel and how to convert it to an image with 1 byte per pixel?
I have thermal images from FLIR camera that has 2 bytes per pixel. I am not sure how I could check in Ubuntu if these images have 2 bytes per pixel or not.
Also, how can I convert a 2 byte per pixel ...
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How can automatically print a page bigger than an A4 on multiple A4 pages?
I have an image bigger than A4 (210x297 mm), let's say 400x400 mm. Is there a way to automaically print it on multiple pages keeping the original size, so that I can just put them side by side to get ...
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image version broken ubuntu 18.04LTS
I reinstall Ubuntu 18.04LTS and I have 2 image version: 5.3.0.28 generic (original installation) and 5.3.0.59 Uupdate version). This last version do not work. How can eliminate that version from boot ...
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Good program to cut out image regions manually
I have to process several hundred images manually. The work consists of cutting out square regions from the pictures. I want to save these regions. When saving, there should not be any loss of quality....
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How to batch / multi process cropping images in the terminal?
I tried to crop several images of the same size, but when I crop 5 images and the process is complete, only 4 images are cropped, 1 image is not cropped, if I crop 1 image an error will appear...
I'm ...
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Is there a solution for scanning several photos in one go and save them in several files?
I use xsane for scanning. Is there any solution for putting several photographs on the scanner and they are split up automatically into several files after the scan? Or loading the resulting file ...
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