Research On Virtual Hand Interaction System Based On Dynamic Simulation

Virtual hand technology is one of the key technologies to achieve natural and efficient human-computer interaction. It can apply the experience and skills gained in daily lives to human-computer interaction, that accords with the human cognitive habits. By sampling and calculating the raw data from data glove and analyzing the movement characteristics of human hand, we accomplish movement mapping from human hand to virtual hand. We deal with the penetration problem during the grasping operations with penetration rollback method, which enhaces the authenticity greatly.Mirtich's collison integration method needs to resolve ordinary differential equation systems, and the computing efficiency is low. It cannot satisfy the real-time requirement of the virtual hand interaction system. We use the assumption that the sliding direction is constant during the collision. We improve Mirtich's collision integration method, and simplify the sliding equations from ordinary differential equation systems to simple algebraic functions, and also simplify the collision integraion form three stages to two stages. The experiments prove that the computing efficiency increases by 10 times, and the system frame rate increases to 30 above. It meets with the real-time requirement.