Detection and tracking of moving objects hidden from view
Detection and tracking of moving objects hidden from view
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DOI：
10.1038/nphoton.2015.234
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发表时间：
2016-01-01
期刊：
影响因子：
35
通讯作者：
Faccio, Daniele
中科院分区：
文献类型：
--
作者：
Gariepy, Genevieve;Tonolini, Francesco;Faccio, Daniele
当实际绕过障碍物是不可能或危险的时候，检测运动并跟踪隐藏在角落或墙后的运动物体的能力提供了至关重要的优势。以前的方法已经证明，有可能重建隐藏在视线之外的对象的形状。然而，这些方法不能实时跟踪运动。我们展示了一种紧凑型非视距激光测距技术，该技术依赖于使用散射地板将光发送到障碍物周围，然后在捕获时间仅几秒钟内检测到来自隐藏对象的返回信号的能力。通过使用单光子雪崩二极管(SPAD)相机检测到这一信号，我们可以以厘米精度跟踪距离相机一米处的物体的运动。我们讨论了在不久的将来将这项技术应用于各种现实情况的可能性。
The ability to detect motion and track a moving object hidden around a corner or behind a wall provides a crucial advantage when physically going around the obstacle is impossible or dangerous. Previous methods have demonstrated that it is possible to reconstruct the shape of an object hidden from view. However, these methods do not enable the tracking of movement in real time. We demonstrate a compact non-line-of-sight laser ranging technology that relies on the ability to send light around an obstacle using a scattering floor and then detect the return signal from a hidden object within only a few seconds of acquisition time. By detecting this signal with a single-photon avalanche diode (SPAD) camera, we follow the movement of an object located a metre away from the camera with centimetre precision. We discuss the possibility of applying this technology to a variety of real-life situations in the near future.