光学学报, 2019, 39 (7): 0711004, 网络出版: 2019-07-16
隐形结构光三维成像动态背景光干扰抑制技术 下载: 920次
Dynamic Background Light Interference Suppression Technology Based on Invisible Structured Light Three-dimensional Imaging
成像系统 三维成像 背景光干扰抑制 结构光成像 条纹图像处理 imaging systems three-dimensional imaging background light interference suppression structured light imaging stripe image processing
摘要
结构光照明成像在近距离高分辨率物体三维测量方面具有重要应用。在传统结构光照明成像的基础上,提出了隐形结构光三维成像动态背景光干扰抑制技术,对实际目标进行了三维轮廓获取,并对动态背景光的抗干扰能力进行了详细的分析和验证。基于激光干涉原理产生的结构光,投射两束正交偏振光束到物体表面并不产生干涉条纹,采用同步相移探测技术实现结构光条纹的探测和再现。采用同步相移探测技术,可同时获得4步相移条纹图像,有效降低了背景光的干扰,提升了动态三维成像的能力。理论研究了隐形结构光的成像原理及动态背景光抑制机理,搭建了实验验证装置,获得了动态背景光干扰下实际目标的三维重建图像,实验结果与理论分析吻合。
Abstract
Structured light illumination imaging has important applications in three-dimensional(3D) measurement of close-range high-resolution objects. Based on traditional structured light illumination imaging, a dynamic background light interference suppression technology based on invisible structured light three-dimensional imaging is proposed, a 3D contour of an actual target is acquired, and the anti-interference ability of dynamic background light is analyzed and studied in detail. The generation of structured light is based on the principle of laser interference. The emitting side projects two orthogonally polarized beams, and no interference fringes are generated on the surface of the object. The receiver uses synchronous phase shifting technology to achieve the detection and reconstruction of the structured light stripe. Based on the synchronous phase shifting technology, a four-step phase shifting fringe image is obtained simultaneously, the background light interference can be effectively reduced, and the dynamic 3D imaging capability is improved. In this paper, we theoretically analyze the principle of invisible structured light imaging and the mechanism of dynamic background light suppression, establish an experimental verification device, and obtain a 3D reconstructed image of the actual target under dynamic background light interference. The experimental results are in agreement with the theoretical analysis results.
毛奥, 孙建锋, 卢智勇, 周煜, 许倩, 劳陈哲, 贺红雨, 许蒙蒙. 隐形结构光三维成像动态背景光干扰抑制技术[J]. 光学学报, 2019, 39(7): 0711004. Ao Mao, Jianfeng Sun, Zhiyong Lu, Yu Zhou, Qian Xu, Chenzhe Lao, Hongyu He, Mengmeng Xu. Dynamic Background Light Interference Suppression Technology Based on Invisible Structured Light Three-dimensional Imaging[J]. Acta Optica Sinica, 2019, 39(7): 0711004.