Non-line-of-sight-imaging using dynamic relay surfaces
Non-line-of-sight-imaging using dynamic relay surfaces
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DOI：
10.1364/oe.383586
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发表时间：
2020-02-17
期刊：
影响因子：
3.8
通讯作者：
Velten, Andreas
中科院分区：
文献类型：
--
作者：
La Manna, Marco;Nam, Ji-Hyun;Velten, Andreas
近年来，非视线（NLOS）成像问题引起了人们的极大兴趣。其目的是产生隐藏在角落周围的物体的图像，使用在光子的飞行时间（ToF）中编码的信息，这些光子在入射到给定的中继表面后多次散射。目前大多数方法假设朗伯，平坦和静态的中继表面，在隐藏的场景中的非移动目标。在这里，我们展示了非视距重建的中继表面是非平面的，并在数据采集过程中迅速变化。我们的NLOS成像系统利用两个不同的探测器来收集ToF数据;一个与中继表面有关，另一个与隐藏场景的ToF信息有关。然后，系统能够关联多次散射光子从中继表面起源的位置。该步骤允许我们在重建算法中考虑改变中继位置。结果表明，动态继电器表面的重建是类似的，使用传统的非动态继电器表面。(C)根据OSA开放获取出版协议的条款，2020年美国光学学会。
The non-line-of-sight (NLOS) imaging problem has attracted a lot of interest in recent years. The objective is to produce images of objects that are hidden around a corner, using the information encoded in the time-of-flight (ToF) of photons that scatter multiple times after incidence at a given relay surface. Most current methods assume a Lambertian, flat and static relay surface, with non-moving targets in the hidden scene. Here we show NLOS reconstructions for a relay surface that is non-planar and rapidly changing during data acquisition. Our NLOS imaging system exploits two different detectors to collect the ToF data; one pertaining to the relay surface and another one regarding the ToF information of the hidden scene. The system is then able to associate where the multiply-scattered photons originated from the relay surface. This step allows us to account for changing relay positions in the reconstruction algorithm. Results show that the reconstructions for a dynamic relay surface are similar to the ones obtained using a traditional non-dynamic relay surface. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.