OpenGL Mathematics (GLM)
A standalone, large scale, open project for 2D/3D image processing
ArrayFire, a general purpose GPU library
Resize images and animated GIFs in Go
A layer built on top of the Insight Toolkit (ITK)
A powerful cross-platform raw photo processing program
A collection of packages providing extra functionality for GNU Octave
Swiss army knife of image processing
Photo/Video/GIF enlargement using machine learning
Scan Tailor Experimental is an interactive post-processing tool
Resilient Image Library - successor to DevIL
itom - an Open Source Measurement, Automation and Evaluation Software
Scientific Visualisation Made Easy
A dithering software based around floats
A powerful tool designed to reconstruct an original image from pieces
Image processing App for Windows Desktop
Image processing library in C/C++
Tools for 3D image analysis of additively manufactured parts
Astrophotography image & video processor. Full processing cycle
ScanTailor Deviant - a fork based on Universal and Experimental family
ScanTailor Advanced is the version that merges STF and STE
ScanTailor Universal - a fork based on Enhanced+Featured+Master