论文标题
单光子结构灯
Single-Photon Structured Light
论文作者
论文摘要
我们提出了一种新型的结构化光技术，该技术使用单个光子雪崩二极管（SPAD）阵列以高框架速率和较低的水平启用3D扫描。该技术称为“单光子结构光”，通过传感二进制图像来起作用，该图像表明每次暴露期间都存在或不存在光子到达； SPAD阵列与高速二元投影仪一起使用，这两个设备的速度高达20〜KHz。我们获得的二进制图像受到光子噪声的严重影响，并且很容易被环境光源损坏。为了解决这个问题，我们使用误差校正代码开发了新颖的时间序列，这些误差校正代码旨在对诸如投影仪和摄像机散热器等短距离效果以及两个设备之间的分辨率不匹配。我们的实验室原型能够在涉及反照率极低或快速运动的物体以及在强烈的环境照明下的场景中进行3D成像。
We present a novel structured light technique that uses Single Photon Avalanche Diode (SPAD) arrays to enable 3D scanning at high-frame rates and low-light levels. This technique, called "Single-Photon Structured Light", works by sensing binary images that indicates the presence or absence of photon arrivals during each exposure; the SPAD array is used in conjunction with a high-speed binary projector, with both devices operated at speeds as high as 20~kHz. The binary images that we acquire are heavily influenced by photon noise and are easily corrupted by ambient sources of light. To address this, we develop novel temporal sequences using error correction codes that are designed to be robust to short-range effects like projector and camera defocus as well as resolution mismatch between the two devices. Our lab prototype is capable of 3D imaging in challenging scenarios involving objects with extremely low albedo or undergoing fast motion, as well as scenes under strong ambient illumination.
