Non-line-of-sight Reconstruction Using Efficient Transient Rendering
Non-line-of-sight Reconstruction Using Efficient Transient Rendering
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DOI：
10.1145/3368314
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发表时间：
2020-02-01
影响因子：
6.2
通讯作者：
Hullin, Matthias B.
中科院分区：
文献类型：
--
作者：
Iseringhausen, Julian;Hullin, Matthias B.
能够看到直接视线之外的东西是一个有趣的前景，并且可以使各种重要应用受益。最近的工作表明，间接漫射光的时间分辨测量包含有价值的信息，用于重建位于拐角处的物体的形状和反射特性。在这篇文章中，我们介绍了一种新的重建方案，通过设计，产生的解决方案是符合国家的最先进的基于物理的渲染。我们的方法结合了一个有效的前向模型（时间分辨三反射间接光传输的自定义渲染器）与优化框架，以分析合成的意义上重建物体几何形状。我们评估我们的算法在各种合成和实验输入数据，并表明，它优雅地处理不合作的场景与高水平的噪声或非漫反射材料反射。
Being able to see beyond the direct line of sight is an intriguing prospect and could benefit a wide variety of important applications. Recent work has demonstrated that time-resolved measurements of indirect diffuse light contain valuable information for reconstructing shape and reflectance properties of objects located around a corner. In this article, we introduce a novel reconstruction scheme that, by design, produces solutions that are consistent with state-of-the-art physically based rendering. Our method combines an efficient forward model (a custom renderer for time-resolved three-bounce indirect light transport) with an optimization framework to reconstruct object geometry in an analysis-by-synthesis sense. We evaluate our algorithm on a variety of synthetic and experimental input data, and show that it gracefully handles uncooperative scenes with high levels of noise or non-diffuse material reflectance.