Cybersickness in virtual reality (VR) is an ongoing problem, despite recent advances in head-mounted displays (HMDs). Discrete viewpoint control techniques have been recently used by some VR developers to combat cybersickness. Discrete viewpoint techniques rely on reducing optic flow via inconsistent displacement, to reduce cybersickness when using stationary HMD-based VR systems. However, reports of their effectiveness are mostly anecdotal. We experimentally evaluate two discrete movement techniques; we refer to as rotation snapping and translation snapping. We conducted two experiments measuring participant cybersickness levels via the widely used simulator sickness questionnaire (SSQ), as well as user-reported levels of nausea, presence, and objective error rates. Our results indicate that both rotation snapping and translation snapping significantly reduced SSQ by 40% for rotational viewpoint movement, and 50% for translational viewpoint movement. They also reduced participant nausea levels, especially with longer VR exposure. Presence levels, error rates, and performance were not significantly affected by either technique.

尽管最近在头戴式显示器（HMD）方面取得了进步，但虚拟现实（VR）中的晕机病仍是一个持续存在的问题。一些VR开发人员最近已使用离散视点控制技术来对抗网络疾病。离散视点技术依赖于通过不一致的位移来减少光流，以减少使用基于HMD的固定VR系统时的计算机疾病。但是，有关其有效性的报道大多是零星的。我们通过实验评估了两种离散运动技术；我们称为旋转捕捉和平移捕捉。我们进行了两个实验，这些实验通过广泛使用的模拟器疾病问卷（SSQ）来测量参与者的晕机病水平，以及用户报告的恶心，存在和客观错误率的水平。我们的结果表明，旋转捕捉和平移捕捉都可以将旋转视点移动的SSQ分别降低40％，将平移视点移动的SSQ降低50％。他们还减少了参与者的恶心程度，尤其是长时间暴露在VR中。存在水平，错误率和性能均不受这两种技术的显着影响。