Interdisciplinary Program in Visual Information Processing, Korea University, Seoul 02841, Korea.
Department of Information Systems Engineering, Sungshin Women's University, Seoul 02844, Korea.
Sensors (Basel). 2021 Jan 8;21(2):397. doi: 10.3390/s21020397.
We propose a low-asymmetry interface to improve the presence of non-head-mounted-display (non-HMD) users in shared virtual reality (VR) experiences with HMD users. The low-asymmetry interface ensures that the HMD and non-HMD users' perception of the VR environment is almost similar. That is, the point-of-view asymmetry and behavior asymmetry between HMD and non-HMD users are reduced. Our system comprises a portable mobile device as a visual display to provide a changing PoV for the non-HMD user and a walking simulator as an in-place walking detection sensor to enable the same level of realistic and unrestricted physical-walking-based locomotion for all users. Because this allows non-HMD users to experience the same level of visualization and free movement as HMD users, both of them can engage as the main actors in movement scenarios. Our user study revealed that the low-asymmetry interface enables non-HMD users to feel a presence similar to that of the HMD users when performing equivalent locomotion tasks in a virtual environment. Furthermore, our system can enable one HMD user and multiple non-HMD users to participate together in a virtual world; moreover, our experiments show that the non-HMD user satisfaction increases with the number of non-HMD participants owing to increased presence and enjoyment.
我们提出了一种低不对称接口，以提高非头戴式显示器（非 HMD）用户在与 HMD 用户共享虚拟现实（VR）体验中的存在感。低不对称接口确保 HMD 和非 HMD 用户对 VR 环境的感知几乎相似。也就是说，减少了 HMD 和非 HMD 用户之间的视点不对称和行为不对称。我们的系统包括一个便携式移动设备作为视觉显示器，为非 HMD 用户提供变化的视点，以及一个步行模拟器作为原地行走检测传感器，为所有用户提供相同水平的逼真和无限制的基于物理行走的运动。因为这允许非 HMD 用户体验与 HMD 用户相同水平的可视化和自由移动，所以他们都可以作为运动场景中的主要参与者。我们的用户研究表明，当非 HMD 用户在虚拟环境中执行等效的运动任务时，低不对称接口使他们能够感受到类似于 HMD 用户的存在感。此外，我们的系统可以使一个 HMD 用户和多个非 HMD 用户一起参与虚拟世界；此外，我们的实验表明，由于存在感和享受度的提高，非 HMD 用户的满意度随着非 HMD 参与者的数量增加而增加。
