Images

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General

See also Signal, Data, Graphics, Documents, Media, etc.

Formats

  • Pixel-fitting - "Most icons and logos are stored in vector image files that specify perfect mathematical representations of their shapes. Unlike JPG and PNG images, vector graphic files don’t tell the computer how to display their contents in pixels that can be displayed on a screen; for a vector graphic to be displayed, the computer has to perform a translation from the mathematical vectors into something that can be displayed with pixels on the screen."


  • About those vector icons · Pushing Pixels - "Listing “one [SVG] icon, infinite sizes” as one of the advantages, it seems to be a great solution, but only for duotone, or more precisely purely black and white, icons. In addition, it completely fails to address the giant elephant in the room – what to do for complex icons that do not scale well to small sizes? Type engines have two major approaches to solve this problem – embedding bitmaps and font hinting."




Vector

  • https://en.wikipedia.org/wiki/Vector_graphics - the set of mechanisms for creating visual images directly from geometric shapes defined on a Cartesian plane, such as points, lines, curves, and polygons. These mechanisms may include vector display and printing hardware, vector data models and file formats, and software based on these data models (especially graphic design software, Computer-aided design, and Geographic information systems). Vector graphics are an alternative to raster graphics, each having advantages and disadvantages in general and in specific situations.

SVG

Articles


Tools


  • https://github.com/scour-project/scour - an SVG optimizer/cleaner that reduces the size of scalable vector graphics by optimizing structure and removing unnecessary data written in Python.It can be used to create streamlined vector graphics suitable for web deployment, publishing/sharing or further processing.


  • Professor Cloud - converts SVG into an HTML5 Canvas JavaScript function. It will work with any host, and I hope it helps people to experiment with Canvas. Most vector art packages (Illustrator, Inkscape etc) can export as SVG.


  • canvas-svg - a set of related components that make canvas and SVG play together more. Notably, it allows you to save a canvas 2D context as SVG, and to have an SVG mirror of a canvas context.


var c = document.getElementById('canvas');
var ctx = c.getContext('2d');
ctx.drawSvg(SVG_XML_OR_PATH_TO_SVG, dx, dy, dw, dh);


  • JessyInk - a JavaScript that can be incorporated into an Inkscape SVG image containing several layers. Each layer will be converted into one slide of a presentation. Current features include: slide transitions, effects, an index sheet, a master slide and auto-texts like slide title, slide number and number of slides.


  • MagicMarkup - Easily create interactive mockups in Inkscape, without adding inline JS!


  • Vector Magic - Automatically convert bitmap images like JPEGs, GIFs and PNGs to the crisp, clean, scalable vector art of EPS, SVG, and PDF with the world's best auto-tracing software.


  • 1x1px - Ever needed a 1x1 transparent PNG pixel?



Savage

Like Sass for SVG.

Repos

HVIF

TVG

Raster/ / bitmap

  • https://en.wikipedia.org/wiki/Raster_graphics - In computer graphics and digital photography, a raster graphics represents a two-dimensional picture as a rectangular matrix or grid of square pixels, viewable via a computer display, paper, or other display medium. A raster is technically characterized by the width and height of the image in pixels and by the number of bits per pixel. Raster images are stored in image files with varying dissemination, production, generation, and acquisition formats. The printing and prepress industries know raster graphics as contones (from continuous tones). In contrast, line art is usually implemented as vector graphics in digital systems. Transposing an image to covert raster organization (a relatively costly operation for packed formats with less than a byte per pixel); composing an additional raster line reflection (almost free), either before or afterwards, amounts to a 90° image rotation in one direction or the other. Many raster manipulations map directly onto the mathematical formalisms of linear algebra, where mathematical objects of matrix structure are of central concern.


  • https://github.com/StanleySathler/bitmap-parser - a very simple Bitmap parser. The goal here is to understand how an image file works behind the scenes. I chose the Bitmap format because it often does not contain compression, so it is an easy starting point.


TIFF

GeoTIFF
  • https://en.wikipedia.org/wiki/GeoTIFF - a public domain metadata standard which allows georeferencing information to be embedded within a TIFF file. The potential additional information includes map projection, coordinate systems, ellipsoids, datums, and everything else necessary to establish the exact spatial reference for the file. The GeoTIFF format is fully compliant with TIFF 6.0, so software incapable of reading and interpreting the specialized metadata will still be able to open a GeoTIFF format file.

An alternative to the "inlined" TIFF geospatial metadata is the *.tfw World File sidecar file format which may sit in the same folder as the regular TIFF file to provide a subset of the functionality of the standard GeoTIFF described here.


  • Cloud Optimized GeoTIFF - A Cloud Optimized GeoTIFF (COG) is a regular GeoTIFF file, aimed at being hosted on a HTTP file server, with an internal organization that enables more efficient workflows on the cloud. It does this by leveraging the ability of clients issuing ​HTTP GET range requests to ask for just the parts of a file they need.

XBM

  • https://en.wikipedia.org/wiki/X_BitMap - a plain text binary image format, for storing cursor and icon bitmaps used in the X GUI.[2] The XBM format is superseded by XPM, which first appeared for X11 in 1989.

XPM


DICOM

  • DICOM - the international standard for medical images and related information. It defines the formats for medical images that can be exchanged with the data and quality necessary for clinical use. DICOM® is implemented in almost every radiology, cardiology imaging, and radiotherapy device (X-ray, CT, MRI, ultrasound, etc.), and increasingly in devices in other medical domains such as ophthalmology and dentistry. With hundreds of thousands of medical imaging devices in use, DICOM® is one of the most widely deployed healthcare messaging Standards in the world. There are literally billions of DICOM® images currently in use for clinical care. Since its first publication in 1993, DICOM® has revolutionized the practice of radiology, allowing the replacement of X-ray film with a fully digital workflow. Much as the Internet has become the platform for new consumer information applications, DICOM® has enabled advanced medical imaging applications that have “changed the face of clinical medicine”. From the emergency department, to cardiac stress testing, to breast cancer detection, DICOM® is the standard that makes medical imaging work — for doctors and for patients. DICOM® is recognized by the International Organization for Standardization as the ISO 12052 standard.


  • https://en.wikipedia.org/wiki/DICOM - Digital Imaging and Communications in Medicine,, is the standard for the communication and management of medical imaging information and related data. DICOM is most commonly used for storing and transmitting medical images enabling the integration of medical imaging devices such as scanners, servers, workstations, printers, network hardware, and picture archiving and communication systems (PACS) from multiple manufacturers. It has been widely adopted by hospitals and is making inroads into smaller applications such as dentists' and doctors' offices. DICOM files can be exchanged between two entities that are capable of receiving image and patient data in DICOM format. The different devices come with DICOM Conformance Statements which state which DICOM classes they support. The standard includes a file format definition and a network communications protocol that uses TCP/IP to communicate between systems.



EXR

  • OpenEXR - provides the specification and reference implementation of the EXR file format, the professional-grade image storage format of the motion picture industry. The purpose of EXR format is to accurately and efficiently represent high-dynamic-range scene-linear image data and associated metadata, with strong support for multi-part, multi-channel use cases. OpenEXR is widely used in host application software where accuracy is critical, such as photorealistic rendering, texture access, image compositing, deep compositing, and DI. OpenEXR is a project of the Academy Software Foundation.


  • https://en.wikipedia.org/wiki/OpenEXR - a high-dynamic range, multi-channel raster file format, released as an open standard along with a set of software tools created by Industrial Light & Magic (ILM), under a free software license similar to the BSD license. It is notable for supporting multiple channels of potentially different pixel sizes, including 32-bit unsigned integer, 32-bit and 16-bit floating point values, as well as various compression techniques which include lossless and lossy compression algorithms. It also has arbitrary channels and encodes multiple points of view such as left- and right-camera images.


farbfeld

  • farbfeld - a lossless image format which is easy to parse, pipe and compress. Suckless. [6]

JPG

Reference
  • JPEGclub.org develops new JPEG features and maintains the Independent JPEG Group's (IJG) software.
Optimisation


"when your JPEG image is under 10K, it’s better to be saved as baseline JPEG (estimated 75% chance it will be smaller) for files over 10K the progressive JPEG will give you a better compression (in 94% of the cases)"





  • pngquant is a command-line utility and a library for converting 24/32-bit PNG images to paletted (8-bit) PNGs. The conversion reduces file sizes significantly (often as much as 70%) and preserves full alpha transparency. [7]







Other

GIF





PNG











  • https://github.com/richgel999/fpng - a very fast C++ .PNG image reader/writer for 24/32bpp images. It's a single source file with no dependencies on any other library. fpng.cpp was written to see just how fast you can write .PNG's without sacrificing too much compression. The files written by fpng conform to the PNG standard, are readable using any PNG decoder, and load or validate successfully using libpng, wuffs, lodepng, stb_image, and pngcheck. PNG files written using fpng can also be read using fpng significantly faster than other PNG libraries, due to its explicit use of Length-Limited Prefix Codes and an optimized decoder that exploits the properties of these codes.



APNG

WebP

JPEG XL


BPG

HVIF

HEIF

FLIF

  • FLIF - Free Lossless Image Format, a novel lossless image format which outperforms PNG, lossless WebP, lossless BPG, lossless JPEG2000, and lossless JPEG XR in terms of compression ratio. [19]

ETC

  • https://github.com/google/etc2comp - converts textures (e.g. bitmaps) into the ETC2 format. The tool is built with a focus on encoding performance to reduce the amount of time required to compile asset heavy applications as well as reduce overall application size.

HiFiC

  • HiFiC - We combine Generative Adversarial Networks with learned compression to obtain a state-of-the-art generative lossy compression system. In the paper, we investigate normalization layers, generator and discriminator architectures, training strategies, as well as perceptual losses. In a user study, we show that our method is preferred to previous state-of-the-art approaches even if they use more than 2× the bitrate. [20]

QOI

  • QOI — The Quite OK Image Format - The Quite OK Image Format forFast, Lossless CompressionQOI is fast. It losslessly compresses images to a similar size of PNG, while offering 20x-50x faster encoding and 3x-4x faster decoding.QOI is simple. The reference en-/decoder fits in about 300 lines of C. The file format specification is a single page PDF.


Software

PSD


ASCII

Web 1.0 stylee

88*31

etc.

Resources

Icons

See also HTML/CSS#Icons HTML/CSS#Data URI, Typography#Webfont icons

  • Iconic - Advanced icons for the modern web. 200+ smart icons, responsive, 3 sizes, CSS styling [22]
  • Maki is a clean point of interest icon set made for web cartography.
  • SJJB SVG Map Icons - an attempt to create a simple consistent set of vector icons suitable for cartographic use.
  • Climacons - climatically categorised pictographs for web and user interface designers.
  • Skycons is a set of ten animated weather glyphs, procedurally generated by JavaScript using the HTML5 canvas tag.
  • LivIcons - Truly animated icon pack with power of scalable vector graphic for clean and perfect look at any devices.
  • Icon Deposit - post your icons, designs, code, and screenshots to promote your work



  • IcoMoon - striving to build and provide the best iconography and icon management tool for perfectionists. IcoMoon's icon library features only the very best icon sets out there. All of our icons are designed on a precise pixel grid. The IcoMoon app lets you build and use your own icon packs in many different formats including SVG, Polymer, PDF, XAML, CSH, icon font with ligatures, or good old PNG/CSS sprites.


  • Evil Icons - Lightweight SVG icons for your web project


  • https://github.com/sixsixfive/Monotone - A Monotone icon theme that contains over 1300 scalable icons to cover more than 5500 icons from the last linux decade. Its mainly made for dark desktops or HTPC's however it can also be used as a pure action/toolbar icon theme, fallback icon theme or even on bright desktops after a color change.

Wallpapers


Open and free


  • CC0 Textures - Free Public Domain PBR Materials - a library of high quality PBR materials licensed under the Creative Commons CC0 License. This means that you are free to use and even redistribute them in any of your projects - including commercial use!

















  • Devices - Images and Sketch files of popular devices, by Facebook Design


  • WidgetWorx » Selected Projects » SpriteLib - a collection of static and animated graphic objects (also commonly known as sprites) that I created between 1992 and 2002 for my own game projects. Seeing how it could benefit others, I decided to offer it to hobbyist game developers to use in their creations free of charge. Because of SpriteLib, game developers no longer have to waste precious time or money creating graphics from scratch when they can use mine in their game demos and prototypes. Over the years, SpriteLib has been used in hundreds of games, including some popular ones like Pacific Wings.




Images

  • IconDrop - A desktop app for searching and using free SVG icons

Textures









  • Imogen - GPU Texture generator using dear imgui for UI. Not production ready and a bit messy but really fun to code. This is an hybrid project that can run natively or on the web (thanks to emscripten). Basically, add GPU and CPU nodes in a graph to manipulate and generate images.

Thread

Buttons

Software





Viewing

xv

feh

feh

meh

sxiv

  • sxiv - Simple (or small or suckless) X Image Viewer
sxiv *
  Open all (hack)
sxiv -t

q
  quit
f
  toggle fullscreen
Enter
  toggle between single and thumbnail
Space
  next image
Backspace
  previous image

CV

  • CV - a perl module that implements an image viewer.

MP View

  • MP View - cross-platform image viewer with possibility of image manipulation (crop, resize, running filters), based on CImg and QtMP View is opensource software and is distributed under terms of GNU GPL v2.Currently the project is in beta state.

qiv / pqiv

  • QIV - Quick Image Viewer,for Linux, Sun, FreeBSD and HP-UX

PixelOnTerminal

termplay

Emulsion

qimgv

ANPV

HDRView

  • https://github.com/wkjarosz/hdrview - a simple research-oriented high-dynamic range image viewer with an emphasis on examining and comparing images, and including minimalistic editing and tonemapping capabilities. HDRView currently supports reading EXR, PNG, TGA, BMP, HDR, JPG, GIF, PNM, PFM, and PSD images and writing EXR, HDR, PNG, TGA, PPM, PFM, and BMP images. HDRView can display true HDR on Apple extended dynamic range (EDR) and 10-bit displays.

mpv

See Playback#mpv



vipsdisp

  • https://github.com/jcupitt/vipsdisp - displays an image with libvips and gtk4. This is supposed to be a slightly useful image viewer. It can display huge (many, many GB, images quickly and without using much memory. It supports many scientific and technical image formats, including TIFF, WEBP, JP2K, JXL, AVIF, HEIC, PNG, JPEG, SVS, MRXS, OpenEXR, GIF, PDF, SVG, FITS, Matlab, NIfTI, Analyze, etc. It supports pixel types from 1 bit mono to 128-bit double precision complex.

rxiv

  • https://github.com/eylles/rxiv - Reisen X Image Viewer. The sole purpose of rxiv is because sxiv won't add many sensible features and it seems abandoned by the author. Reisen X Image Viewer is named after Reisen Udongein Inaba from Touhou.

ximaging

Eternity

Geeqie

ImageGlass

  • https://github.com/d2phap/ImageGlass - a lightweight software designed for seamless viewing of images in a clean and intuitive interface. With support for over 80 common image formats including WEBP, GIF, SVG, PNG, JXL, HEIC,... ImageGlass also offers advanced features that cater to the needs of both regular users and designers, making it the excellent tool to enhance workflow efficiency.


MulimgViewer

SOTOHP

ImageSort

  • https://github.com/jlortiz0/ImageSort - a rapid image sorter and semi-competent viewer. The original version was written in Python over a few weekends. Due to issues with CPU usage, switched to Golang and SDL 2.

FlashySlideshows

vimiv

  • vimiv - An image viewer with vim-like keybindings
  • https://github.com/karlch/vimiv-qt - an image viewer with vim-like keybindings. It is written in python3 using the Qt toolkit and is free software, licensed under the GPL.

Xlideit

  • Xlideit - a lightweight image viewer with basic image processing. A thumbnail bar is shown at the bottom of the window with all the images in the folder. The name of the current image and the toolbar are shown at the top of the window. Use the toolbar to access basic commands like: image slideshow, adjust zoom, rotate, delete, crop or resize the image, sort the list or access the program settings. Move the mouse pointer near the left or right side of the window to show the arrows and select the next or previous image. Move the mouse over the buttons to see a short description or over the thumbnails to see more information.

Pineapple Pictures

  • https://github.com/BLumia/pineapple-pictures - a lightweight image viewer that allows you view JPEG, PNG, GIF, SVG, PSD, KRA, XCF, TGA, AVIF and some other frequently used image formats files quickly and easily, and also provide a Stay-on-Top window setting that allows you pin the window so you can use it to pin a reference image at the top and then you can work with other software.

vv

  • https://github.com/open-vv/vv - an open-source and cross platform image viewer, designed for fast and simple visualization of spatio-temporal images: 2D, 2D+t, 3D and 3D+t (or 4D, images. VV runs (at least!) on Linux, Windows and Mac OS in 32 and 64 bits. VV is more specifically designed for qualitative evaluation of image registration and deformation field visualization. It contains several tools for superimposing images using complementary colors or transparency, visualizing vector fields and defining landmarks. With a modern graphic card, navigation is fast and smooth.

VookiImageViewer

  • https://github.com/vookimedlo/vooki-image-viewer - A lightweight image viewer for a fast image preview. It has been developed to have the same viewer available for all major operating systems - Microsoft Windows 11, macos and GNU/Linux. The main goal is to have a free of charge cross-platform viewer with a simple design and minimum functions that are commonly used.

Oculante

  • https://github.com/woelper/oculante - A no-nonsense hardware-accelerated image viewer. Oculante's vision is to be a fast, unobtrusive, portable image viewer with wide image format support, offering image analysis and basic editing tools.

PQIV

  • https://github.com/phillipberndt/pqiv - a powerful GTK 3 based command-line image viewer with a minimal UI. It is highly customizable, can be fully controlled from scripts, and has support for various file formats including PDF, Postscript, video files and archives. It is optimized to be quick and responsive.

qView

Diff

FLOꟼ

  • https://research.nvidia.com/publication/flip - Abstract: Image quality measures are becoming increasingly important in the field of computer graphics. For example, there is currently a major focus on generating photorealistic images in real time by combining path tracing with denoising, for which such quality assessment is integral. We present ꟻLIP, which is a difference evaluator with a particular focus on the differences between rendered images and corresponding ground truths. Our algorithm produces a map that approximates the difference perceived by humans when alternating between two images. ꟻLIP is a combination of modified existing building blocks, and the net result is surprisingly powerful. We have compared our work against a wide range of existing image difference algorithms and we have visually inspected over a thousand image pairs that were either retrieved from image databases or generated in-house. We also present results of a user study which indicate that our method performs substantially better, on average, than the other algorithms.To facilitate the use of ꟻLIP, we provide source code in C++, CUDA, MATLAB, NumPy/SciPy, and PyTorch.


tev

Manipulation

ImagePlay

  • ImagePlay - a rapid prototyping tool for building and testing image processing algorithms.It comes with a variety of over 70 individual image processors which can be combined into complex process chains.ImagePlay is completely open source and can be built for Windows, Mac and Linux.

ImageMagick

magick image.jpg image.png



import -crop 1280x1024+1280+0 -window root $HOME/screenshot_silver_$(date +%F_%H%M%S_%N).png
  # import a screenshot of the root window to a file cropped for the second desktop



convert -quality 97 image.png image.jpg

convert sample.png sample.pdf




GraphicsMagick

G'MIC

  • G'MIC - a full-featured open-source framework for image processing. It provides several different user interfaces to convert/manipulate/filter/visualize generic image datasets, ranging from 1d scalar signals to 3d+t sequences of multi-spectral volumetric images, thus including 2d color images.

VIPS

  • libvips - A fast image processing library with low memory needs.

img2txt / gif2txt

Netpbm

  • Netpbm - a toolkit for manipulation of graphic images, including conversion of images between a variety of different formats. There are over 300 separate tools in the package including converters for about 100 graphics formats. Examples of the sort of image manipulation we're talking about are: Shrinking an image by 10%; Cutting the top half off of an image; Making a mirror image; Creating a sequence of images that fade from one image to another.

Freestyle

  • Freestyle - software for Non-Photorealistic Line Drawing rendering from 3D scenes. It is designed as a programmable interface to allow maximum control over the style of the final drawing: the user "programs" how the silhouettes and other feature lines from the 3D model should be turned into stylized strokes using a set of programmable operators dedicated to style description. This programmable approach, inspired by the shading languages available in photorealistic renderers such as Pixar's RenderMan, overcomes the limitations of integrated software with access to a limited number of parameters and permits the design of an infinite variety of rich and complex styles. The system currently focuses on pure line drawing as a first step. The style description language is Python augmented with our set of operators.

shapeme

primitive.lol

primitive

imscript


Neural Photo Editor

iGAN

Deep Image Prior

  • Deep Image Prior - deep convolutional networks have become a popular tool for image generation and restoration. Generally, their excellent performance is imputed to their ability to learn realistic image priors from a large number of example images. In this paper, we show that, on the contrary, the structure of a generator network is sufficient to capture a great deal of low-level image statistics prior to any learning. In order to do so, we show that a randomly-initialized neural network can be used as a handcrafted prior with excellent results in standard inverse problems such as denoising, superresolution, and inpainting. Furthermore, the same prior can be used to invert deep neural representations to diagnose them, and to restore images based on flash-no flash input pairs. [42]

imgaug

audio_shop

PixiVisor

  • PixiVisor - a tool for experimenting with the transmission of video over audio. It consists of two parts: Transmitter and Receiver. Transmitter converts the low-resolution video (stream from camera, static image or GIF animation) to sound in real time, pixel by pixel (progressive scan). So any image or animation can be transferred to the other devices through the sound. Receiver converts the sound (from microphone or Line-in input) back to video. You can set the color palette for this video, and record it to animated GIF file.

imagecli

pastel

ColTerm

VIPS

  • https://en.wikipedia.org/wiki/VIPS_(software) - an open source image processing software package. It is particularly good with large images, works with multi-core processors, working with colour, scientific analysis and general research & development. It was developed during and is the product of several European research projects (VASARI, MARC, ACOHIR, Viseum, which were primarily about Imaging art, but which demanded a new approach to image processing. Compared to most image processing libraries VIPS needs little RAM and runs quickly, especially on machines with more than one CPU. This is primarily due to its architecture which automatically parallelises the image workflows.



FITS Liberator

  • FITS Liberator - create color images using raw observations from a range of telescopes, including Gemini at NSF’s NOIRLab, NASA’s Spizer Space Telescope, NASA/ESA Hubble Space Telescope, Chandra X-ray Observatory, the NASA/ESA/CSA James Webb Space Telescopes or the telescopes at Kitt Peak National Observatory or Cerro Tololo Inter-American Observatory. The new FITS Liberator has been revamped using modern libraries for fast processing and a smooth graphic interface with a new look and now including a very useful command line interface.

ImageJ

Other

Generation

See also Generative

  • GD is an open source code library for the dynamic creation of images by programmers. GD is written in C, and "wrappers" are available for Perl, PHP and other languages. GD creates PNG, JPEG and GIF images, among other formats. GD is commonly used to generate charts, graphics, thumbnails, and most anything else, on the fly. While not restricted to use on the web, the most common applications of GD involve website development.


  • Processing is a programming language, development environment, and online community. Since 2001, Processing has promoted software literacy within the visual arts and visual literacy within technology. Initially created to serve as a software sketchbook and to teach computer programming fundamentals within a visual context, Processing evolved into a development tool for professionals. Today, there are tens of thousands of students, artists, designers, researchers, and hobbyists who use Processing for learning, prototyping, and production.



  • polyHédronisme - a toy for building complex 3D polyhedral shapes from simple ones by "recipes".


  • Mondrian is a smart and easy-to-learn vector graphics web app.



  • Evolvotron is an interactive "generative art" application for Linux to evolve images/textures/patterns/animations through an iterative process of random mutation and user-selection driven evolution. (This process is also often referred to as "evolutionary art" or "genetic art".) If you like lava lamps, and still think the Mandelbrot set is cool, this could be the software for you.







  • https://github.com/Morphogens/prosepainter - ProsePainter combines direct digital painting with real-time guided machine-learning based image optimization. Simply state what you want and draw the region where you want it. Tux, the Linux mascot


Context Free Art

  • Context Free Art - a program that generates images from written instructions called a grammar. The program follows the instructions in a few seconds to create images that can contain millions of shapes.

Photography

See Photography

Editing

nomacs

  • nomacs - a free, open source image viewer, which supports multiple platforms. You can use it for viewing all common image formats including RAW and psd images. nomacs features semi-transparent widgets that display additional information such as thumbnails, metadata or histogram. It is able to browse images in zip or MS Office files which can be extracted to a directory. Metadata stored with the image can be displayed and you can add notes to images. A thumbnail preview of the current folder is included as well as a file explorer panel which allows switching between folders. Within a directory you can apply a file filter, so that only images are displayed whose filenames have a certain string or match a regular expression. Activating the cache allows for instantly switching between images. nomacs includes image manipulation methods for adjusting brightness, contrast, saturation, hue, gamma, exposure. It has a pseudo color function which allows creating false color images. A unique feature of nomacs is the synchronization of multiple instances. With this feature you can easily compare images by zooming and/or panning at the exactly same position or even by overlaying them with different opacity.

svg-edit

GIMP


  • Glimpse - an open source image editor based on the GNU Image Manipulation Program. The goal is to experiment with new ideas and expand the use of free software.


Manual
Tips
Tab
  toggle toolbars

Doesn't save undo history. Bug. Use file history, layers or sg-snapshot instead.

Articles
Brushes and textures
  • GPS is a collection of brushes and accompanying tool presets. Tool presets are a simply saved tool options, highly useful feature of the GIMP. The goal of GPS is to provide an adequate working environment for graphic designers and artists to begin to paint and feel comfortable with GIMP from their first use. Later the user will change these settings based on his own workflow preferences and understanding of GIMP.
Scripts and plugins











  • Hugin - Panorama photo stitcher - an easy to use cross-platform panoramic imaging toolchain based on Panorama Tools.With Hugin you can assemble a mosaic of photographs into a complete immersive panorama, stitch any series of overlapping pictures and much more.





  • https://github.com/TeamPictonode/pictonode - an image editor using a revolutionary node-based system that allows for greater flexibility and reproducibility. The end goal is to make image processing a parallelized process that anyone can take part in, regardless of their technical background. In addition, we also aim to allow those already familiar with contemporary image editing software to easily transition to Pictonode.



  • https://github.com/LinuxBeaver/gegl-goo-on-text - Gimp filter where GEGL puts goo on your text. It works great with my other text styling filters. On Windows and Mac you have to compile. On Linux just put the binaries in /gegl-0.4/plugins



  • GAP - for animation









Community

Photoshop

Plugins

Inkscape

Guides

sK1

  • sK1 - professional quality illustration program for Windows, GNU/Linux and macOS platforms. sK1 2.0 is a powerful and mature application that makes users more productive and provides them professional and free solution even for exotic *nix OSes. Whether you are a newbie user or an experienced designer, sK1 2.0 makes it easy to get started. With its professional color-management engine and wide-range file format compatibility, sK1 2.0 provides color accuracy and drawing flexibility you need for all types of projects.

Pinta

MyPaint

  • MyPaint is a fast and easy open-source graphics application for digital painters. It lets you focus on the art instead of the program. You work on your canvas with minimum distractions, bringing up the interface only when you need it.

Paint.net


jspaint

  • https://github.com/1j01/jspaint - A pixel-perfect web-based MS Paint remake and more. JS Paint recreates every tool and menu of MS Paint, and even little-known features, to a high degree of fidelity. It supports themes, additional file types, and accessibility features like Eye Gaze Mode and Speech Recognition

AzPainter

Online

Photopea
  • Photopea - a free online tool for editing raster art and vector graphics with support for PSD, XCF and Sketch files. Supported formats: Complex: PSD, XCF, Sketch, XD, CDR, SVG, EPS, PDF, WMF, EMF. Raster: PNG (APNG), JPG, GIF, WebP, ICO, BMP, PPM/PGM/PBM, TIFF, DNG, DDS.

mtPaint

  • mtPaint - a painting program which Mark Tyler developed from scratch so he could easily create pixel art and manipulate digital photos. It uses the GTK+ toolkit (version 1 or 2) and runs on PC's via the GNU/Linux or Windows operating systems. Due to its efficient design it can run on older PC hardware (e.g. a 200MHz CPU and 16MB of free RAM). mtPaint is free software, which means you are able to freely use, modify and distribute it according to the GNU General Public License.

JS Paint

  • JS Paint - A pixel-perfect web-based MS Paint remake and more... Try it out! JS Paint recreates every tool and menu of MS Paint, and even little-known features, to a high degree of fidelity. It supports themes, additional file types, and accessibility features like Eye Gaze Mode and Speech Recognition.

sK1

  • sK1 - professional quality illustration program for Windows, GNU/Linux and macOS platforms. sK1 2.0 is a powerful and mature application that makes users more productive and provides them professional and free solution even for exotic *nix OSes. Whether you are a newbie user or an experienced designer, sK1 2.0 makes it easy to get started. With its professional color-management engine and wide-range file format compatibility, sK1 2.0 provides color accuracy and drawing flexibility you need for all types of projects.


Xara Xtreme

  • Xara Xtreme - for Linux is a powerful, general purpose graphics program for Unix platforms including Linux, FreeBSD and (in development) OS-X. Formely known as Xara LX, it is based on Xara Xtreme for Windows, which is the fastest graphics program available, period. The Xara Xtreme source code was made available open-source in early 2006, and is being ported to Linux. This process is almost complete and Xara Xtreme for Linux is available for download now.


CinePaint

  • CinePaint - an open source computer program for painting and retouching bitmap frames of films. It is a fork of version 1.0.4 of the GNU Image Manipulation Program (GIMP). It enjoyed some success as one of the earliest open source tools developed for feature motion picture visual effects and animation work. The main reason for this adoption over mainline gimp was its support for high bit depths (greater than 8-bits per channel) which can be required for film work.[citation needed] The mainline GIMP project later added high bit depths in GIMP 2.9.2, released November 2015.


Krita

  • Krita - a professional FREE and open source painting program. It is made by artists that want to see affordable art tools for everyone including for concept art, texture and matte painters, illustrations and comics


Fragmentarium / FragM

  • Fragmentarium - an open source, cross-platform IDE for exploring pixel based graphics on the GPU. It is inspired by Adobe's Pixel Bender, but uses GLSL, and is created specifically with fractals and generative systems in mind.
    • https://github.com/3Dickulus/FragM - derived from Mikael Hvidtfeldt Christensen's Fragmentarium representing a compilation of features and fixes contributed by many users at FractalForums.com over 3-4 years.


XFig

  • XFig - a free and open-source vector graphics editor which runs under the X Window System on most UNIX-compatible platforms. In Xfig, figures may be drawn using objects such as circles, boxes, lines, spline curves, text, etc. It is also possible to import images in formats such as GIF, JPEG, EPS, PostScript, etc. Those objects can be created, deleted, moved or modified. Attributes such as colors or line styles can be selected in various ways. For text, 35 fonts are available. Xfig saves figures in its native text-only "Fig" format. Xfig has a facility to print figures to a PostScript printer too. A convenient feature is the PSTEX or PDFTEX export format that allows a smooth integration of Xfig-generated images into LaTeX documents.


GrafX2

  • GrafX2 - a bitmap paint program inspired by the Amiga programs ​Deluxe Paint and Brilliance. Specialized in 256-color drawing, it includes a very large number of tools and effects that make it particularly suitable for pixel art, game graphics, and generally any detailed graphics painted with a mouse. The program is mostly developed on Haiku, Linux and Windows, but is also portable on many other platforms. [44]

rx

  • rx - an extensible, modern and minimalist pixel editor, designed with great care and love for artists and hackers. It was conceived to have as little UI as possible, and instead focus on the work. rx To achieve this, rx takes inspiration from vi's modal nature and is built around a command system, unique to tools of its kind. [45]

Seashore

  • Seashore - an open source image editor for Mac OS X's Cocoa framework. It features gradients, textures and anti-aliasing for both text and brush strokes. It supports multiple layers and alpha channel editing. It is based around the GIMP's technology and uses the same native file format. However, unlike the GIMP, Seashore aims to serve the basic image editing needs of most computer users, not to provide a replacement for professional image editing products. Also, unlike GIMP, Seashore has an all-new Cocoa UI that will fit right in on Mac OS X.

VPaint

  • VPaint is an experimental vector graphics editor based on the Vector Animation Complex (VAC), a technology developed by a collaboration of researchers at Inria and the University of British Columbia, featured at SIGGRAPH 2015. It allows you to create resolution-independent illustrations and animations using innovative techniques. [46]
  • https://github.com/dalboris/vpaint


Voronoizer

  • https://github.com/cdsmith/voronoizer - Convert any image into a Voronoi diagram. The result is a set of polygons of solid color, which can be used as a basis for a mosaic or other artistic rendering.

chaiNNer

  • https://github.com/chaiNNer-org/chaiNNer - A flowchart/node-based image processing GUI aimed at making chaining image processing tasks (especially upscaling done by neural networks) easy, intuitive, and customizable. No existing upscaling GUI gives you the level of customization of your image processing workflow that chaiNNer does. Not only do you have full control over your processing pipeline, you can do incredibly complex tasks just by connecting a few nodes together. chaiNNer is also cross-platform, meaning you can run it on Windows, MacOS, and Linux.


All-RGB-image-generator

Gallery / Library

Allusion

Animation




  • DALi - a dynamic animation library, a 2D and 3D scene graph that abstracts the rendering of the nodes through a simple API. It can be used to create 2D and 3D applications, providing support for resource loading, touch events, key events, animating the nodes and a whole array of functionality to make it easy for the user to produce effects, applications and user interfaces. DALi is developed with user input responsiveness, smooth updates with good FPS and low memory requirements in mind. A Toolkit is provided to make using DALi even easier along with a framework that facilitates the creating of your own controls. DALi is Open Source, constantly maintained and extended.DALi provides 2 apis, the native C++ and NUI which is based on C#.


  • https://github.com/MaurycyLiebner/enve - a new open-source 2D animation software for Linux. You can use enve to create vector animations, raster animations, and even use sound and video files. Enve was created with flexibility and expandability in mind.

DTP

Scribus

Docs

other

Analysis


OCR




Depix


NormCap

Cross-stitch and knitting

Screenshot


  • Shutter is a feature-rich screenshot program. You can take a screenshot of a specific area, window, your whole screen, or even of a website – apply different effects to it, draw on it to highlight points, and then upload to an image hosting site, all within one window.


  • ScreenCloud - Take a screenshot using one of the 3 hotkeys or simply click the ScreenCloud tray icon.





Scanning

scanimage


Recognition

  • Fawkes - takes your personal images and makes tiny, pixel-level changes that are invisible to the human eye, in a process we call image cloaking. You can then use these "cloaked" photos as you normally would, sharing them on social media, sending them to friends, printing them or displaying them on digital devices, the same way you would any other photo. The difference, however, is that if and when someone tries to use these photos to build a facial recognition model, "cloaked" images will teach the model an highly distorted version of what makes you look like you. The cloak effect is not easily detectable by humans or machines and will not cause errors in model training. However, when someone tries to identify you by presenting an unaltered, "uncloaked" image of you (e.g. a photo taken in public) to the model, the model will fail to recognize you. Fawkes

Forma

  • https://github.com/google/forma - A (thoroughly) parallelized experimental Rust vector-graphics renderer with both a software (CPU) and hardware (GPU) back-end having the following goals, in this order: Portability; supporting Fuchsia, Linux, macOS, Windows, Android & iOS. Performance; making use of compute-focused pipeline that is highly parallelized both at the instruction-level and the thread-level. Simplicity; implementing an easy-to-understand 4-stage pipeline. Size; minimizing the number of dependencies and focusing on vector-graphics only.

Pixel art



Line art


Inking


Upscaling










Deduplication


Other

  • OpenBR - A communal biometrics framework supporting the development of open algorithms and reproducible evaluations.


  • ReCode Project - a community-driven effort to preserve computer art by translating it into a modern programming language (Processing). Every translated work will be available to the public to learn from, share, and build on.







  • https://github.com/google/butteraugli - a project that estimates the psychovisual similarity of two images. It gives a score for the images that is reliable in the domain of barely noticeable differences. Butteraugli not only gives a scalar score, but also a spatial map of the level of differences. [53]



  • Enfuse - PanoTools.org Wiki - command-line program used to merge different exposures of the same scene to produce an image that looks very much like a tonemapped image (without the halos) but requires no creation of an HDR image. Therefore it is much simpler to use and allows the creation of very large multiple exposure panoramas.



  • https://github.com/pugwonk/gif2xlsx - I worked for a long time in financial services, and I can tell you that one thing I got sick of hearing was "how do I convert animated GIFs into Excel files". If you're here wondering why nobody has yet exploited this gap in a very lucrative market, wonder no longer. Help is at hand.

Machine learning




Web

Self-hosted

OpenPhoto

  • OpenPhoto - an Open Source photo sharing platform which gives users complete ownership and portability of their photos. Users’ photos, tags and comments are seamlessly stored into personally owned cloud services owned by themselves. Whatever they want to do or wherever they want to go their photos are free to go with them.

Galleria

Colorbox

  • Colorbox - A lightweight customizable lightbox plugin for jQuery

+Gallery

Photographer.io


PiGallery

Tropy

  • Tropy - Take control of your research photos with Tropy, a tool that shortens the path from finding archival sources to writing about them. Spend more time using your research photos, and less time hunting for them.

to sort




Services


Hosting

Design

Collaborative

etc

Machine learning

IIIF

  • https://en.wikipedia.org/wiki/Image_server - web server software which specializes in delivering (and often modifying) images. However, not all image servers support HTTP or can be used on web sites. While traditional web servers generally supply clients with static copies of image files, image servers usually perform additional image processing before serving the file. These functions may include frame/format selection, resizing, cropping, alpha blending, compositing source images, rotating, color adjustment, and filtering. A major use of image servers is to support browser-based pan-and-zoom viewers. port/1188



  • IIIF - International Image Interoperability Framework, a set of open standards for delivering high-quality, attributed digital objects online at scale. It’s also an international community developing and implementing the IIIF APIs. IIIF is backed by a consortium of leading cultural institutions.



  • IIPImage - an advanced high-performance feature-rich image server system for web-based streamed viewing and zooming of ultra high-resolution images. It is designed to be fast and bandwidth-efficient with low processor and memory requirements. The system can comfortably handle gigapixel size images as well as advanced image features such as 8, 16 and 32 bits per channel, CIELAB colorimetric images and scientific imagery such as multispectral images and digital elevation maps. Streaming is tile-based, making it possible to view, navigate and zoom in real-time around gigapixel size images that would be impossible to download and manipulate on the local machine. It also makes the system very scalable as the number of image tile downloads will remain the same regardless of the size of the source image. Source images can be in either TIFF or JPEG2000 format. Whole images or regions within images can also be rapidly and dynamically resized and exported by the server from a single source image without the need to store multiple files in various sizes.


  • Cantaloupe Image Server :: Home - an open-source dynamic image server for on-demand generation of derivatives of high-resolution source images. With available operations including cropping, scaling, and rotation, it can support deep-zooming image viewers, as well as on-the-fly thumbnail generation. Compliance with the IIIF Image API enables it to work with a growing number of client applications.




  • Madoc - A platform for the display, enrichment, and curation of IIIF-based digital objects. New possibilities for annotation and transcription projects. A flexible crowdsourcing, research and teaching platform for digitised collections.



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