The Accuracy and Precision of Position and Orientation Tracking in the HTC Vive Virtual Reality System for Scientific Research.
The Accuracy and Precision of Position and Orientation Tracking in the HTC Vive Virtual Reality System for Scientific Research.
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DOI：
10.1177/2041669517708205
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发表时间：
2017-05
期刊：
影响因子：
1.9
通讯作者：
Lappe M
中科院分区：
文献类型：
--
作者：
Niehorster DC;Li L;Lappe M
廉价的消费者虚拟现实设备的出现使更多的研究人员能够研究自然移动观察者的感知。HTC Vive就是这样一个系统，它提供了一个大视场、高分辨率的头戴式显示器，以及一个房间规模的跟踪系统，价格不到1000美元。如果该系统的位置和定向跟踪具有足够的准确度和精度，则其可以适用于目前使用昂贵得多的系统进行的许多研究。在这里，我们对HTC Vive的位置和方向跟踪以及端到端系统延迟进行了定量测试。我们报告说，虽然Vive的跟踪测量精度很高，其系统延迟（22 ms）很低，但其位置和方向测量是在相对于物理地平面倾斜的坐标系中提供的。由于在跟踪短暂丢失时会发现偏移量发生较大变化，因此无法通过一次性校准程序进行校正。我们的结论是，虚拟和物理跟踪空间之间的不同偏移使得HTC Vive目前不适合需要通过虚拟世界进行精确视觉刺激的科学实验。然而，它可能适用于没有这种要求的其他实验。
The advent of inexpensive consumer virtual reality equipment enables many more researchers to study perception with naturally moving observers. One such system, the HTC Vive, offers a large field-of-view, high-resolution head mounted display together with a room-scale tracking system for less than a thousand U.S. dollars. If the position and orientation tracking of this system is of sufficient accuracy and precision, it could be suitable for much research that is currently done with far more expensive systems. Here we present a quantitative test of the HTC Vive’s position and orientation tracking as well as its end-to-end system latency. We report that while the precision of the Vive’s tracking measurements is high and its system latency (22 ms) is low, its position and orientation measurements are provided in a coordinate system that is tilted with respect to the physical ground plane. Because large changes in offset were found whenever tracking was briefly lost, it cannot be corrected for with a one-time calibration procedure. We conclude that the varying offset between the virtual and the physical tracking space makes the HTC Vive at present unsuitable for scientific experiments that require accurate visual stimulation of self-motion through a virtual world. It may however be suited for other experiments that do not have this requirement.