| 郑小钰,董祉序,杨赫然,孙兴伟,刘 寅.基于结构光测量技术的 DMD 自适应掩膜生成[J].电子测量与仪器学报,2023,37(7):148-155 |
| 基于结构光测量技术的 DMD 自适应掩膜生成 |
| DMD adaptive mask generation based on structured light measurement technology |
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| DOI： |
| 中文关键词: 数字微镜 强反射表面 高动态范围 掩膜 |
| 英文关键词:digital micromirror device strong reflective surface high dynamic range mask |
| 基金项目:2022 年度辽宁省教育厅高等学校基本科研项目面上项目(LJKMZ20220459)、辽宁省应用基础研究计划项目(2022JH2 / 101300214)、国家自然科学基金(52005347)项目资助 |
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| Author | Institution |
| Zheng Xiaoyu | 1. School of Mechanical Engineering, Shenyang University of Technology,2. Key Laboratory of Numerical Control Manufacturing Technology for Complex Surfaces of Liaoning Province |
| Dong Zhixu | 1. School of Mechanical Engineering, Shenyang University of Technology,2. Key Laboratory of Numerical Control Manufacturing Technology for Complex Surfaces of Liaoning Province |
| Yang Heran | 1. School of Mechanical Engineering, Shenyang University of Technology,2. Key Laboratory of Numerical Control Manufacturing Technology for Complex Surfaces of Liaoning Province |
| Sun Xingwei | 1. School of Mechanical Engineering, Shenyang University of Technology,2. Key Laboratory of Numerical Control Manufacturing Technology for Complex Surfaces of Liaoning Province |
| Liu Yin | 1. School of Mechanical Engineering, Shenyang University of Technology,2. Key Laboratory of Numerical Control Manufacturing Technology for Complex Surfaces of Liaoning Province |
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| 中文摘要: |
| 为解决强反射表面物体测量过程中易发生局部镜面反射,影响测量精度的问题。 将数字微镜添加到结构光测量光路中
并设计搭建测量系统,包括数字微镜、CCD 相机、投影仪等器件。 完成了系统的匹配、相机和投影仪的参数标定以及相位计算,
采用麻雀搜索算法优化 BP 神经网络的方法建立数字微镜单元和相机像素单元之间的坐标映射关系,映射误差为 0. 583 pixels。
基于 PID 控制器提出一种自适应掩膜生成方法,并对具有强反射表面的量块进行了测量实验,实验表明该方法能有效降低过曝
光区域的灰度,实现了高动态范围成像。 提出的方法可为强反射表面的三维测量提供理论支撑。 |
| 英文摘要: |
| In order to solve the problem that local specular reflection is easy to occur during the measurement of objects with strong
reflection surface, which affects the measurement accuracy. The digital micro mirror is added to the structural light measurement optical
path and the measurement system is designed and built, including the digital micro mirror, CCD camera, projector and other devices.
The matching of the system, the parameter calibration of camera and projector and the phase calculation are completed. The coordinate
mapping relationship between the digital micromirror device unit and the camera pixel unit is established by using the sparrow search
algorithm to optimize the BP neural network. The mapping error is 0. 583 pixels. An adaptive mask generation method based on PID
controller is proposed, and the measurement experiment of the measure block with strong reflective surface is carried out. The experiment
shows that the method can effectively reduce the gray level of the overexposed area, and achieve high dynamic range imaging. The
proposed method can provide theoretical support for the three-dimensional measurement of strongly reflective surfaces. |
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