for a project we are trying to convert a old fashioned pick-nick table into an interactive one. The last step is tracking handmotion. What I need to detect is gesture swiping left or swiping right, that's all. Colour tracking is not really the option because the colour of the wood is detected as skin colour. Can openCV help here, or  http://code.google.com/p/ehci/ ?

Anyway, I'm not experienced enough to program it myself, but if someone can give me a setup I might get there (and learn from it!).

Thanks in advance!