虚拟现实系统中的时间延迟问题研究  

Research of Time Delay Problem in Virtual Reality System

作　　者：徐德友[1] 

机构地区：[1]炮兵学院南京分院射击教研室,江苏南京211132

出　　处：《系统仿真学报》2006年第z1期111-113,共3页Journal of System Simulation

基　　金：江苏省自然科学基金项目(BK2006004)

摘　　要：研究了基于头盔显示器(HMD)的虚拟现实系统中的时间延迟问题。分析了延迟产生的原因,以及其对系统产生的影响。提出利用神经网络预测头部运动,由预测结果更新HMD显示,消除延迟。定义八种类型的头部运动,并选取头部的六自由度数据作为神经网络的训练样本。利用该方法,可以有效地补偿HMD系统中的时间延迟,消除使用者的眩晕感。The time delay problem in head-mounted display (HMD) based virtual reality systems is researched. We analyze the reason of time delay and its influences to the virtual reality system. Neural network is used to predict the next head position and orientation that can help computing and updating the display faster, reducing or eliminating dizziness caused by delays. Six DOF data of eight types movements of the head are defined to provide representative training and testing sets for the neural network system. Using this method, the time delay of the system can be compensated effectively so that the user has little motion sickness.

关 键 词：时间延迟 神经网络 虚拟现实 头盔显示器 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]