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Multi-touch Software

T-beta and Touchlib
These multi-touch sensing software applications are connected to the customised IR webcam to calibrate our prototype table for gesture recognition and refine multi-touch blob detection.
The Beta, tbeta for short, is a open source/cross-platform solution for computer vision and multi-touch sensing. It takes an video input stream and outputs tracking data (e.g. coordinates and blob size) and touch events (e.g. finger down, moved and released) that are used in building multi-touch applications.
Tbeta can interface with various web cameras and video devices as well as connect to various TUIO/OSC enabled applications and supports many multi-touch lighting techniques including: FTIR, DI, DSI, and LLP with expansion planned for the future (custom modules/filters).
Touchlib is a library for creating multi-touch interaction surfaces. It handles tracking blobs of infrared light, and sends your programs these multi-touch events, such as ‘finger down’, ‘finger moved’, and ‘finger released’. It includes a configuration app and a few demos to get you started, and will interace with most types of webcams and video capture devices. It currently works only under Windows but efforts are being made to port it to other platforms.
We preferred to use TBeta because it is newer and has a nicer, cleaner, interface, it is cross-platform and It works with Windows, Mac, or Linux, but unfortunately it isn’t always stable.

To download TUIO documentation visit this thread on the NUI  Group.

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