Recovering Transparent Shape from Time-of-Flight Distortion
Recovering Transparent Shape from Time-of-Flight Distortion
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DOI：
10.1109/cvpr.2016.475
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
Kenichiro Tanaka;Y. Mukaigawa;Hiroyuki Kubo;Y. Matsushita;Y. Yagi
中科院分区：
文献类型：
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作者：
Kenichiro Tanaka;Y. Mukaigawa;Hiroyuki Kubo;Y. Matsushita;Y. Yagi
本文提出了一种使用飞行时间 (ToF) 相机从单个视点恢复透明物体的形状和法线的方法。我们的方法建立在光速随介质折射率变化的事实之上，因此使用 ToF 相机对透明物体的深度测量可能会失真。我们证明，根据这种 ToF 畸变，可以通过估计单个参数来唯一确定折射光路。我们通过在候选光路确定的表面法线与根据相应形状计算的另一个表面法线之间引入表面法线一致性来估计该参数。所提出的方法通过模拟和现实实验进行了评估，并显示出忠实的透明形状恢复。
This paper presents a method for recovering shape and normal of a transparent object from a single viewpoint using a Time-of-Flight (ToF) camera. Our method is built upon the fact that the speed of light varies with the refractive index of the medium and therefore the depth measurement of a transparent object with a ToF camera may be distorted. We show that, from this ToF distortion, the refractive light path can be uniquely determined by estimating a single parameter. We estimate this parameter by introducing a surface normal consistency between the one determined by a light path candidate and the other computed from the corresponding shape. The proposed method is evaluated by both simulation and real-world experiments and shows faithful transparent shape recovery.