With the increasing attention in single pixel imaging and three dimensional (3D) measurement, several effective single-pixel 3D imaging (SPI-3D) systems have been put forward, which are capable of retrieving the 3D form of an object. However, for a dynamic 3D scene that occurs within several microseconds, these SPI-3D systems have encountered multiple speed limitations from active illumination devices and decoding algorithms. Here, a time-encoded single-pixel 3D (TESP-3D) imaging method is proposed, which employs an active one dimensional infrared time-encoded projector and four single-pixel detectors to acquire the 3D information on dynamic targets with a line rate of up to 500 000 Hz. As a proof of concept, we demonstrate 3D line-scanning imaging on fast moving objects with a velocity of 25 m/s. TESP-3D is a promising method for industrial on-line 3D inspection and high throughput 3D screening.

中文翻译：

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时间编码的单像素3D成像

随着对单像素成像和三维（3D）测量的关注日益增加，已经提出了几种有效的单像素3D成像（SPI-3D）系统，它们能够检索物体的3D形式。但是，对于在几微秒内发生的动态3D场景，这些SPI-3D系统在有源照明设备和解码算法中遇到了多种速度限制。在此，提出了一种时间编码的单像素3D（TESP-3D）成像方法，该方法采用一维有源一维红外时间编码投影仪和四个单像素检测器，以3％的线速率获取动态目标的3D信息。高达500 000 Hz。作为概念证明，我们演示了对速度为25 m / s的快速移动物体进行3D线扫描成像的方法。