&lt;title&gt;Tracking a head-mounted display in a room-sized environment with head-mounted cameras&lt;/title&gt;

Wang, Jih-Fang; Azuma, Ronald; Bishop, Gary; Chi, Vernon; Eyles, John; Fuchs, Henry

doi:10.1117/12.20954

Cited by 22 publications

(7 citation statements)

References 2 publications

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“…To accommodate the full range of head motion, multiple image sensors must be oriented such that wherever the head is pointed, two or more sensors are able to view LEDs on the ceiling. Given the current focal lengths, simulations show that as many as eight fields of view are required for a respectable rotation range [29]. The weight of each sensor must be significantly reduced to achieve this goal.…”

Section: Discussionmentioning

confidence: 99%

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A demonstrated optical tracker with scalable work area for head-mounted display systems

Ward

Azuma²,

Bennett³

et al. 1992

Proceedings of the 1992 Symposium on Interactive 3D Graphics - SI3D '92

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An optoelectronic head-tracking system for head-mounted displays is described. The system features a scalable work area that currently measures 10' x 12', a measurement update rate of 20-100 Hz with 20-60 ms of delay, and a resolution specification of 2 mm and 0.2 degrees. The sensors consist of four head-mounted imaging devices that view infrared lightemitting diodes (LEDs) mounted in a 10' x 12' grid of modular 2' x 2' suspended ceiling panels. Photogrammetric techniques allow the head's location to be expressed as a function of the known LED positions and their projected images on the sensors. The work area is scaled by simply adding panels to the ceiling's grid. Discontinuities that occurred when changing working sets of LEDs were reduced by carefully managing all error sources, including LED placement tolerances, and by adopting an overdetermined mathematical model for the computation of head position: space resection by collinearity. The working system was demonstrated in the Tomorrow's Realities gallery at the ACM SIGGRAPH '91 conference.

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Section: Discussionmentioning

confidence: 99%

“…Other approaches are possible. Wang proposed optically multiplexing multiple fields of view onto on a single lateraleffect photodiode [29]. Reduced signal strength, distortions, and view identification ambiguities make this a nontrivial task.…”

Section: Discussionmentioning

confidence: 99%

A demonstrated optical tracker with scalable work area for head-mounted display systems

Ward

Azuma²,

Bennett³

et al. 1992

Proceedings of the 1992 Symposium on Interactive 3D Graphics - SI3D '92

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“…Magnetic signal-based systems [48,5] are occlusionresistant but have a small range and are affected by distortions due to ferromagnetic materials [56]. Radio frequency signal based techniques using RFIDs (Radio Frequency IDentification) [55,62] and ultrawideband [25] signals demonstrated centimeter-level accuracy but have limited range and require specialized infrastructure that is not as ubiquitous as WiFi.…”

Section: Related Workmentioning

confidence: 99%

Position Tracking for Virtual Reality Using Commodity WiFi

Kotaru

Katti

2017

2017 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)

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Today, experiencing virtual reality (VR) is a cumbersome experience which either requires dedicated infrastructure like infrared cameras to track the headset and hand-motion controllers (e.g. Oculus Rift, HTC Vive), or provides only 3-DoF (Degrees of Freedom) tracking which severely limits the user experience (e.g. Samsung Gear VR). To truly enable VR everywhere, we need position tracking to be available as a ubiquitous service. This paper presents WiCapture, a novel approach which leverages commodity WiFi infrastructure, which is ubiquitous today, for tracking purposes. We prototype WiCapture using off-the-shelf WiFi radios and show that it achieves an accuracy of 0.88 cm compared to sophisticated infrared-based tracking systems like the Oculus, while providing much higher range, resistance to occlusion, ubiquity and ease of deployment.

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“…In 1991 the University of North Carolina demonstrated a working scalable optoelectronic head-tracking system in the Tomorrow's Realities gallery at that year's ACM SIGGRAPH conference [24,25,261. The system used four head-mounted lateral effect photo diode (LEPD) sensors that looked upward at a regular array of infrared light-emitting diodes (LEDs) installed in preciseIy machined ceiling panels as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

The HiBall Tracker

Welch

Bishop

Vicci

et al. 1999

Proceedings of the ACM Symposium on Virtual Reality Software and Technology

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101

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1. ABSTRACT Our HiBall Tracking System generates over 2000 head-pose estimates per second with less than one millisecond of latency, and less than 0.5 millimeters and 0.02 degrees of position and orientation noise, everywhere in a 4.5 by 8.5 meter room. The system is remarkably responsive and robust, enabling VR applications and experiments that previously would have been difficult or even impossible. Previously we published descriptions of only the Kalman filter-based software approach that we call Single-Constraint-at-a-Time tracking. In this paper we describe the complete tracking system, including the novel optical, mechanical, electrical, and algorithmic aspects that enable the unparalleled performance.

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<title>Tracking a head-mounted display in a room-sized environment with head-mounted cameras</title>

Cited by 22 publications

References 2 publications

A demonstrated optical tracker with scalable work area for head-mounted display systems

A demonstrated optical tracker with scalable work area for head-mounted display systems

Position Tracking for Virtual Reality Using Commodity WiFi

The HiBall Tracker

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