头部旋转重定向的交互效率和眩晕感研究

Research on the Interaction Efficiency and Vertigo Sensation of Head Rotation

如何通过重定向方法实现360°观察,同时保证用户的较高的舒适度和较低的眩晕感,是虚拟现实研究的一个重要话题。对放大与引导头部旋转算法的交互效率和眩晕感进行定量研究,使用户坐姿下,通过头戴显示器(Piconeo基础版)旋转一个舒适的角度以观看360°虚拟范围,并在虚拟旅行中引导头部旋转使头部回到自然前向。设计了2种放大头部旋转算法,并与2种现有方式进行对比实验,提出了一种对于引导头部旋转中感兴趣区的自动检测算法,动态计算虚拟对象的角度阈值区实现感兴趣区的选取,在此基础上设计了一种基于正弦的引导旋转算法。通过用户实验,得到各个算法的实验比对结果,实现在较为复杂的虚拟环境中引导头部旋转重定向。

How to achieve 360-degree observation through the redirection method,and at the same time ensure the user’s higher comfort level and lower sense of vertigo,is an important topic in VR research.In this paper,the interaction efficiency and vertigo perception of the amplifying and guiding head rotation algorithm are studied quantitatively:the users sitting in a couch without movement and rotating to a comfortable angle when wearing a head-mounted display(Pico neo Basic Edition)to view a 360-degree virtual range.Two amplified head rotation algorithms are designed and compared with two existing methods.At the same time,an automatic detection algorithm for guiding the area of interest in head rotation is designed,and the algorithm can dynamically calculate the angle threshold of the virtual object and select the area of interest in real-time.Based on this,a sine-based guided rotation algorithm is designed.Through a great deal of experiments,much important information about the experimental comparison results of each algorithm is obtained.Finally,the problem of how to redirect the head rotation in a relatively complicated virtual environment is solved.