K. Abe Hideo Saito Shinji Ozawa Virtual 3-D interface system via hand motion recognition from two cameras. 536-540 2002 32 IEEE Transactions on Systems, Man, and Cybernetics, Part A 4 db/journals/tsmc/tsmca32.html#AbeSO02 http://dx.doi.org/10.1109/TSMCA.2002.804821