摘要
提出了一种复合光栅投影的在线相位测量轮廓术,以解决在像素匹配和相位计算过程中对条纹频率不同需求的矛盾;在像素匹配过程中,提取高频信息以获得质量较高的调制度图像;在相位计算过程中,通过滤波提取低频分量对被测物体进行三维重构,避开高频分量造成的误差;在滤波过程中,设计了一种组合滤波窗,提升了滤波精度;仿真和实验证明了所提方法的有效性和实用性,使用该方法重构物体的误差约为0.89%。
An on-line phase measurement profilometry of composite grating projection is proposed to solve the contradiction between different requirements of fringe frequency in the process of pixel matching and phase calculation.In the pixel matching process,high-frequency information is extracted to obtain a high-quality modulation pattern;in the phase calculation process,low-frequency components are extracted through filtering for the three-dimensional reconstruction of the measured object,to avoid the error caused by high-frequency components.In the filtering process,a combined filtering window is designed to improve the filtering accuracy.Simulation and experiment prove the validity and feasibility of the proposed method.The error of the reconstructed object by this method is about0.89%.
作者
彭旷
曹益平
武迎春
Peng Kuang;Cao Yiping;Wu Yingchun(Hubei Provincial Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics & Electronic Sciences,Hubei University, Wuhan 430062, China;Department of Opto-Electronics, Sichuan University, Chengdu 610064,China;School of Electronic and Information Engineering, Taiyuan University of Science and Technology,Taiyuan 030024, China)
出处
《计算机测量与控制》
2018年第12期46-51,共6页
Computer Measurement &Control
基金
国家863高技术研究发展计划(2007AA01Z333)
国家重大专项(2009ZX02204-008)
国家自然科学基金青年基金项目(61601318)
山西省应用基础研究项目青年科技研究基金(201601D021078)
关键词
三维测量
相位测量轮廓术
复合条纹
three dimensional measurement
phase measurement profilometry
composite fringe
