一种50 kHz、28μs动作-姿态延迟头部跟踪仪的实现与评价。

IF 4.7 1区 计算机科学 Q1 COMPUTER SCIENCE, SOFTWARE ENGINEERING
Alex Blate, Mary Whitton, Montek Singh, Greg Welch, Andrei State, Turner Whitted, Henry Fuchs
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引用次数: 1

摘要

本文介绍了一种运动-姿态延迟为28μs、动态精度为1-2弧分的5万姿态采样/秒、6自由度光学头部跟踪仪的实现与评价。该仪器使用高强度红外发射器和两个基于双侧光电二极管的光学传感器来三角测量姿态。该仪器有两个目的:它是实现亚100μs运动到光子延迟光学透明增强现实(OST AR)头戴式显示(HMD)系统所需的头部跟踪组件的第一步;它为研究人类视觉感知提供了新的途径——包括测量头部旋转过程中可感知的真实-虚拟位移的阈值,以及其他需要高采样率运动跟踪的人类研究。该仪器的跟踪体积限制在120×120×250左右,但允许全范围的自然头部旋转,并且足以用于涉及坐着用户的研究。我们讨论了仪器的跟踪量是如何以多种方式扩展的,以及其中涉及的一些权衡。最后,我们介绍了一种新的基于激光指针的测量技术来评估仪器的跟踪延迟和可重复性。我们表明,该仪器的运动到姿态延迟为28μs,并且在平均旋转速度(偏航)超过500°/秒的情况下,在1-2弧分钟内可重复。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Implementation and Evaluation of a 50 kHz, 28μs Motion-to-Pose Latency Head Tracking Instrument.

This paper presents the implementation and evaluation of a 50,000-pose-sample-per-second, 6-degree-of-freedom optical head tracking instrument with motion-to-pose latency of 28μs and dynamic precision of 1-2 arcminutes. The instrument uses high-intensity infrared emitters and two duo-lateral photodiode-based optical sensors to triangulate pose. This instrument serves two purposes: it is the first step towards the requisite head tracking component in sub- 100μs motion-to-photon latency optical see-through augmented reality (OST AR) head-mounted display (HMD) systems; and it enables new avenues of research into human visual perception - including measuring the thresholds for perceptible real-virtual displacement during head rotation and other human research requiring high-sample-rate motion tracking. The instrument's tracking volume is limited to about 120×120×250 but allows for the full range of natural head rotation and is sufficient for research involving seated users. We discuss how the instrument's tracking volume is scalable in multiple ways and some of the trade-offs involved therein. Finally, we introduce a novel laser-pointer-based measurement technique for assessing the instrument's tracking latency and repeatability. We show that the instrument's motion-to-pose latency is 28μs and that it is repeatable within 1-2 arcminutes at mean rotational velocities (yaw) in excess of 500°/sec.

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来源期刊
IEEE Transactions on Visualization and Computer Graphics
IEEE Transactions on Visualization and Computer Graphics 工程技术-计算机:软件工程
CiteScore
10.40
自引率
19.20%
发文量
946
审稿时长
4.5 months
期刊介绍: TVCG is a scholarly, archival journal published monthly. Its Editorial Board strives to publish papers that present important research results and state-of-the-art seminal papers in computer graphics, visualization, and virtual reality. Specific topics include, but are not limited to: rendering technologies; geometric modeling and processing; shape analysis; graphics hardware; animation and simulation; perception, interaction and user interfaces; haptics; computational photography; high-dynamic range imaging and display; user studies and evaluation; biomedical visualization; volume visualization and graphics; visual analytics for machine learning; topology-based visualization; visual programming and software visualization; visualization in data science; virtual reality, augmented reality and mixed reality; advanced display technology, (e.g., 3D, immersive and multi-modal displays); applications of computer graphics and visualization.
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