A shared-aperture tracking display for augmented reality

Authors:
Winyu Chinthammit;Eric J. Seibel;Thomas A. Furness, III
Affiliations:
Human Interface Technology Lab, 215 Fluke Hall, Box 352142, University of Washington, Seattle, WA;Human Interface Technology Lab, 215 Fluke Hall, Box 352142, University of Washington, Seattle, WA;Human Interface Technology Lab, 215 Fluke Hall, Box 352142, University of Washington, Seattle, WA
Venue:
Presence: Teleoperators and Virtual Environments - special issue: IEEE virtual reality 2002 conference
Year:
2003

Citing 11
Cited 1

Image plane interaction techniques in 3D immersive environments

Proceedings of the 1997 symposium on Interactive 3D graphics
Calibration-Free Augmented Reality

IEEE Transactions on Visualization and Computer Graphics
Hybrid Inertial and Vision Tracking for Augmented Reality Registration

VR '99 Proceedings of the IEEE Virtual Reality
Accurate Image Overlay on Video See-Through HMDs Using Vision and Accelerometers

VR '00 Proceedings of the IEEE Virtual Reality 2000 Conference
Fusion of Vision and Gyro Tracking for Robust Augmented Reality Registration

VR '01 Proceedings of the Virtual Reality 2001 Conference (VR'01)
Pop Through Button Devices for VE Navigation and Interaction

VR '02 Proceedings of the IEEE Virtual Reality Conference 2002
Unique Shared-Aperture Display with Head or Target Tracking

VR '02 Proceedings of the IEEE Virtual Reality Conference 2002
WearTrack: A Self-Referenced Head and Hand Tracker for Wearable Computers and Portable VR

ISWC '00 Proceedings of the 4th IEEE International Symposium on Wearable Computers
Marker Tracking and HMD Calibration for a Video-Based Augmented Reality Conferencing System

IWAR '99 Proceedings of the 2nd IEEE and ACM International Workshop on Augmented Reality
Real Time Tomographic Reflection: Phantoms for Calibration and Biopsy

ISAR '01 Proceedings of the IEEE and ACM International Symposium on Augmented Reality (ISAR'01)
Space Resection by Collinearity: Mathematics Behind the Optical Ceiling Head-Tracker

Space Resection by Collinearity: Mathematics Behind the Optical Ceiling Head-Tracker

Spatial dialog for space system autonomy

Proceedings of the ACM/IEEE international conference on Human-robot interaction

Quantified Score

Hi-index	0.00

Visualization

Abstract

The operation and performance of a six degree-of-freedom (DOF) shared-aperture tracking system with image overlay is described. This unique tracking technology shares the same aperture or scanned optical beam with the visual display, virtual retinal display (VRD). This display technology provides high brightness in an AR helmet-mounted display, especially in the extreme environment of a military cockpit. The VRD generates an image by optically scanning visible light directly to the viewer's eye. By scanning both visible and infrared light, the head-worn display can be directly coupled to a head-tracking system, As a result, the proposed tracking system requires minimal calibration between the user's viewpoint and the tracker's viewpoint. This paper demonstrates that the proposed shared-aperture tracking system produces high accuracy and computational efficiency. The current proof-of-concept system has a precisior of +/- 0.05 and +/- 0.01 deg, in the horizontal and vertical axes. respectively. The static registration error was measured to be 0.08 +/- 0.04 and 0.03 +/- 0.02 deg, for the horizontal and vertical axes, respectively. The dynamic registration error or the system latency was measured to be within 16.67 ms, equivalent to our display refresh rate of 60 Hz. In all testing, the VRD was fixed and the calibrated motion of a robot arm was tracked. By moving the robot arm within a restricted volume, this real-time shared-aperture method of tracking was extended to six-DOF measurements. Future AR applications of our shared-aperture tracking and display system will be highly accurate head tracking when tne VRD is helmet mounted and worn within an enclosed space, such as an aircraft cockpit.