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 under Windows and Linux.

Code

http://code.google.com/p/touchlib/
Used technologies: C/C++, OpenCV

Download

Touchlib compiled binary (svn build)

• Touchlib compiled libraries, revision 400 (10 -03-2009) – recommended!
• Unofficial Touchlib Reference (3375) - 104.86 kB

Old versions:

• Touchlib (double calibration grid + speedfix) (2406) - 3.26 MB compiled libraries, revision 395 (09 nov 2008)
• Touchlib (1012) - 2.81 MB compiled libraries, revision 395 (26 feb 2008)
  • Contains the new barrel distortion correction filter
  • Instructions can be found in the barrel distortion correction tool package
  • Memory leak bug fixed
  • Improved performance (1.5~2.0x faster)
• Touchlib (speedfix) (3176) - 785.69 kB compiled libraries, revision 393 speedfix (21 apr 2008)
  • Removed the Sleep(32) from bool CTouchScreen::process() in file CTouchScreen.cpp line 274
  • Caused the processing loop to stall for 32ms which is in my opinion unneeded. This would result (in some cases) in lower performance.
  • Might not be safe for single core cpu’s
  • This version does not support videoplayback (from avi files), without the sleep function the video plays too quick.
• FLOSC v2.0.4 (953) - 93.39 kB (Osc -> Flash proxy) including TUIO simulator
• osc (786) - 44.82 kB – stable version without fiducial support