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In-flight evaluation of an Optical Head Motion Tracker II

机译：机头运动追踪器II的飞行中评估

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We resented a new approach for Optical HMT (Head Motion Tracker) past years (Proc. SPIE 6955, 69550A, 2008, Proc. SPIE 7326, 732607/73260L, 2009). In existing Magnetic HMT, it is inevitable to conduct pre-mapping in order to obtain sufficient accuracy because of magnetic field's distortion caused by metallic material around HMT, such as cockpit and helmet. Optical HMT is commonly known as mapping-free tracker; however, it has some disadvantages on accuracy, stability against sunlight conditions, in terms of comparison with Magnetic HMT. We had succeeded to develop new Optical HMT, which can overcome particular disadvantages by integration with two area cameras, LED markers, image processing techniques and inertial sensors with simple algorithm in laboratory level environment (2007). We have also reported some experimental results conducted in flight test, which proves good accuracy even in the sunlight condition (2008).rnShimadzu Corp. and JAXA (Japan Aerospace Exploration Agency) are conducting joint research named SAVERH (Situation Awareness and Visual Enhancer for Rescue Helicopter) that aims at inventing method of presenting suitable information to the pilot to support search and rescue missions by helicopters. The Optical HMT has been evaluated through a series of flight evaluation in SAVERH and demonstrated the operation concept. Through 16 flights including night flights, the potential capability of the system was demonstrated and issues for further improvement were identified.
机译：过去几年中，我们对光学HMT（头部运动跟踪器）感到不满（Proc。SPIE 6955，69550A，2008，Proc。SPIE 7326，732607 / 73260L，2009）。在现有的电磁HMT中，由于驾驶舱和头盔等HMT周围的金属材料引起的磁场变形，不可避免地要进行预映射以获得足够的精度。光学HMT通常称为免映射跟踪器；然而，与磁性HMT相比，它在准确性，对日光条件的稳定性方面有一些缺点。我们已经成功开发了新型光学HMT，该光学HMT可通过在实验室级环境中与两个区域相机，LED标记，图像处理技术和惯性传感器集成在一起，并以简单的算法来克服特殊的缺点（2007年）。我们还报告了在飞行测试中进行的一些实验结果，即使在日光条件下，也证明了其准确性（2008年）。岛津制作所和JAXA（日本航天探索局）正在进行联合研究，名为SAVERH（用于救援的情况感知和视觉增强器）直升机）旨在发明一种向飞行员提供适当信息以支持直升机搜索和救援任务的方法。通过在SAVERH中进行的一系列飞行评估，对光学HMT进行了评估，并展示了其操作概念。通过包括夜间飞行在内的16次飞行，证明了该系统的潜在功能，并确定了需要进一步改进的问题。

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