Research of Data Glove Virtual Manipulation Technology Based on VR Juggler

The data glove is used in the human computer interaction system, by which the natural character of hand is fully exerted. A 225 degrees multi-channel visual simulation system based on PCs is implemented, by use of Visual C++ and VR Juggler kit tools as the development tool. Four key techniques of virtual manipulations were discussed, which were simulation modeling of virtual hand, collision detection, penetration avoidance of virtual hand and grasping, and pulling or releasing virtual objects with virtual hand. Parallel node data structure was proposed to organize virtual hand model. The object-oriented collision detection algorithm based on bounding-box was put forward to solve the first technique. The penetration avoidance algorithm based on tessellations was proposed to solve the third one. As to the forth technique, the algorithm for grasping, pulling and releasing objects was given. At last, a visual simulation system was established to verify these key techniques. These algorithms guarantee that virtual manipulations are real time and realistic, and they can solve the problems well in virtual manipulations.