Opt Express. 2021 Mar 1;29(5):6453-6467. doi: 10.1364/OE.416365.
We propose a time-of-flight measurement algorithm for depth and intensity that is robust to fog. The key idea of the algorithm is to compensate for the scattering effects of fog by using multiple time-gating and assigning one time-gated exposure for scattering property estimation. Once the property is estimated, the depth and intensity can be reconstructed from the rest of the exposures via a physics-based model. Several experiments with artificial fog show that our method can measure depth and intensity irrespective of the traits of the fog. We also confirm the effectiveness of our method in real fog through an outdoor experiment.
我们提出了一种针对深度和强度的抗雾飞行时间测量算法。该算法的关键思想是通过使用多次时间门控并为散射特性估计分配一个时间门控曝光来补偿雾的散射效应。一旦估计出特性，就可以通过基于物理的模型从其余曝光中重建深度和强度。在人造雾的几项实验中，我们的方法表明可以测量深度和强度，而与雾的特性无关。我们还通过户外实验确认了我们的方法在真实雾中的有效性。
