Traditional paradigms for imaging rely on the use of a spatial structure, either in the detector (pixels arrays) or in the illumination (patterned light). Removal of the spatial structure in the detector or illumination, i.e., imaging with just a single-point sensor, would require solving a very strongly ill-posed inverse retrieval problem that to date has not been solved. Here, we demonstrate a data-driven approach in which full 3D information is obtained with just a single-point, single-photon avalanche diode that records the arrival time of photons reflected from a scene that is illuminated with short pulses of light. Imaging with single-point time-of-flight (temporal) data opens new routes in terms of speed, size, and functionality. As an example, we show how the training based on an optical time-of-flight camera enables a compact radio-frequency impulse radio detection and ranging transceiver to provide 3D images.

中文翻译：

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来自时间数据的空间图像

用于成像的传统范例依赖于在检测器（像素阵列）或照明（图案光）中使用空间结构。去除检测器中的空间结构或照明，即仅使用单点传感器进行成像，将需要解决迄今为止尚未解决的非常强烈的病态逆检索问题。在这里，我们演示了一种数据驱动的方法，其中仅用单点单光子雪崩二极管获得完整的3D信息，该二极管记录了被短脉冲光照射的场景反射的光子的到达时间。使用单点飞行时间（时间）数据进行成像可以在速度，大小和功能方面开辟新的途径。举个例子，