The Augmented Reality Tool Kit (ARToolKit) captures images from video sources, optically tracks markers in the images, and composites them with computer-generated content using OpenGL. Dual-license...
NyARToolkit is an ARToolkit built with 100% pure Java. It is derived from ARToolkit-2.72.1. This module uses no native code. You are able to use it on any OS if you have a standard Java runtime env...
Avisynth is a scripting language and a collection of filters for simple (and not so simple!) non-linear video editing tasks. It frameserves video to applications.