High-speed structured light based 3D scanning using an event camera
High-speed structured light based 3D scanning using an event camera
复制标题
使用事件相机进行基于高速结构光的 3D 扫描
DOI：
10.1364/oe.437944
复制
发表时间：
2021-10-25
期刊：
影响因子：
3.8
通讯作者：
Xiong, Zhiwei
中科院分区：
文献类型：
--
作者：
Huang, Xueyan;Zhang, Yueyi;Xiong, Zhiwei
对于结构光系统，由于传感器带宽有限，扫描速度和重建精度通常会受到影响。这种受生物启发的相机，也被称为事件相机，具有高时间分辨率和冗余抑制特性，显示出在高速结构光系统中的潜力。本文介绍了一种用于高速三维扫描的基于事件的结构光系统，该系统由事件摄像机(CELEX-V)和高速数字投影仪(TI-DLP6500)组成。通过控制投影仪使单个伪随机图案闪烁来触发事件。提出了一种简单而有效的算法来从事件流中生成事件帧，然后使用数字图像相关方法来计算位移，从而得到目标对象的3D表面。我们用现成的设备构建了一个原型系统，并在静态和动态场景中进行了测试。实验证明，该系统在90 cm的距离下成功地实现了高达1000fps的扫描速率和0.27 mm的精度。(C)OSA开放获取出版协议条款下的2021年美国光学学会
For a structured light system, scan speed and reconstruction accuracy are usually compromised for limited sensor bandwidth. The bio-inspired camera, also known as the event camera, has high temporal resolution and redundancy-suppressing properties, showing potential to be utilized in a high-speed structured light system. In this paper, we present an event-based structured light system for high-speed 3D scanning, which is composed of an event camera (CeleX-V) and a high-speed digital light projector (TI-DLP6500). The events are triggered by blinking a single pseudo-random pattern by controlling the projector. A simple yet effective algorithm is proposed to generate the event frames from the event stream, and a digital image correlation method is then performed to calculate the displacements, deriving the 3D surfaces of the target objects. A prototype of our proposed system is built with off-the-shelf devices and tested in both static and dynamic scenes. Experiments verify that the proposed system successfully achieves up to a 1000 fps scan rate with an accuracy of 0.27 mm at a distance of 90 cm. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement