迈向零功耗3D成像：VLC辅助的被动ToF传感
Towards Zero-power 3D Imaging: VLC-assisted Passive ToF Sensing
AI总结：
本文提出利用VLC/OWC照明信号作为机会照射源，并通过直接视距路径实现外部同步，构建双基地被动ToF成像系统，可在相机不发射光子的情况下获取强度与深度信息。
摘要：
被动飞行时间（ToF）成像可由光无线通信（OWC）实现。照明基础设施是新兴的基于光的无线通信的骨干。为此，通信源被用作机会照射源来探测场景，并利用时间分辨像素阵列对回波进行解调，前提是ToF相机能够实现外部同步。我们的工作采用直接视距路径来从外部同步相机。再加上场景反射所给出的间接路径，这形成了一种双基地配置。每次飞行时间（ToF）测量都会产生一个椭球形的解空间，并基于双基地配置重新定义了图像形成模型。在本演示中，我们展示了一款被动ToF相机，它在实践中能够提供强度和深度信息，而无需ToF相机自身发射光子。我们的被动模式可以取消内置照明源，从而应对光功率约束，这正是未来ToF相机所期望的。
英文摘要：
Passive Time-of-Flight (ToF) imaging can be enabled by optical wireless communication (OWC). The lighting infrastructure is the backbone of emerging light-based wireless communication. To this end, communication sources are used as opportunity illuminators to probe the scene, and an array of time-resolved pixels are exploited to demodulate the return, provided that the ToF camera can be externally synchronized. Our work employs a direct line-of-sight path to synchronize the camera externally. Together with the indirect path given by the reflections from the scene, this yields a bistatic configuration. Each Time-of-Flight (ToF) measurement induced a solution space of ellipsoidal shape and redefined the image formation model based on the bistatic configuration. In this demo, we showcase a passive ToF camera capable of delivering intensity and depth information in practice without emitting photons from the ToF camera. Our passive modality can eliminate built-in illumination sources, thus coping with optical power constraints, as is desired in future ToF cameras.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
