分布式虚拟人预测显示技术

Forecasting Display Technique of Distributed Virtual Human

在分布式虚拟环境中人的仿真与交通工具仿真有所不同 ,人体具有较多关节 ,如果要虚拟人与环境的交互具有实时性 ,势必要提高其行为在网络中广播信息的数量 ,随着加入网络中虚拟人数量的增加 ,网络负荷将急剧增大 .对此 ,在虚拟人仿真中对人体运动部位进行有机划分 ,使得那些经常与外界实现交互的身体部位按关节描述 ,其它部位按行为信息描述 ,同时运用DR(DeadReckoning)算法来降低维持虚拟人逼真运动所需要的信息传送数量 .实验表明 ,采用预测显示技术可以有效减小网络负荷 ,提高虚拟人的交互性 .

The simulation of human in the distributed virtual environment is different from the simulation of vehicle. Due to the human's many joints, to implement the real time performance of the interaction between the virtual human and the environment, the quantity of information broadcasted in the network will be increased. So with the growing of the quantity of virtual human added to the network, the network burthen would augment rapidly. Therefore, for the simulation of virtual human this paper divides organically the motion parts of the body, which makes those body parts that often interact with the environment are described according to the joints while other parts are described according to the action information. Simultaneity, this paper adopts Dead Reckoning to reduce the quantity of information needed by maintaining the reality motion of virtual human. The experiment indicates that the forecasting display technique can efficiently reduce the network burthen and enhance the interaction of virtual human.