FlightTracker: a novel optical/inertial tracker for cockpit enhanced vision
FlightTracker: a novel optical/inertial tracker for cockpit enhanced vision
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DOI：
10.1109/ismar.2004.32
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发表时间：
2004-11
期刊：
影响因子：
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通讯作者：
E. Foxlin;Y. Altshuler;L. Naimark;M. Harrington
中科院分区：
文献类型：
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作者：
E. Foxlin;Y. Altshuler;L. Naimark;M. Harrington
最早部署的增强现实应用之一是飞行员的增强视觉，飞行员面罩上投射的显示器提供地理空间注册信息，帮助飞行员导航、避开障碍物、在能见度降低的情况下保持态势感知，以及在不向下看的情况下与航空电子设备交互。这需要非常强大和准确的头部跟踪，但目前还没有足够的解决方案。本文通过实现头盔和机载惯性传感器之间的差动惯性跟踪算法和新的光学漂移校正技术，将微型MEMS传感器应用于驾驶舱头盔跟踪以增强/合成视觉。通过将低速率由内向外和由外向内的光学测量与高速惯性数据融合，我们使用小而便宜的传感器实现了毫米级的位置精度和毫弧度的角度精度、低延迟和高稳健性。
One of the earliest fielded augmented reality applications was enhanced vision for pilots, in which a display projected on the pilot's visor provides geo-spatially registered information to help the pilot navigate, avoid obstacles, maintain situational awareness in reduced visibility, and interact with avionics instruments without looking down. This requires exceptionally robust and accurate head-tracking, for which there is not a sufficient solution yet available. In this paper, we apply miniature MEMS sensors to cockpit helmet-tracking for enhanced/synthetic vision by implementing algorithms for differential inertial tracking between helmet-mounted and aircraft-mounted inertial sensors, and novel optical drift correction techniques. By fusing low-rate inside-out and outside-in optical measurements with high-rate inertial data, we achieve millimeter position accuracy and milliradian angular accuracy, low-latency and high robustness using small and inexpensive sensors.