The Gesture and Activity Recognition Toolkit (GART) (formerly Georgia Tech Gesture Toolkit) is a toolkit to allow for rapid prototyping of gesture-based applications. There are two versions of the toolkit, a Linux shell scripting based version and the more refined Java version.
comm and vision modules, as well as the WritingPad, PinkCup, and AccelGestures examples (note that the information involving Maven is outdated)
GART: The Gesture and Activity Recognition Toolkit
Kent Lyons, Helene Brashear, Tracy Westeyn, Jung Soo Kim, Thad Starner
12th International Conference on Human-Computer Interaction. Beijing, China, July 2007.