频域分析的条纹投影技术相位解调方法研究进展  

Review on phase demodulation methods of fringe projection based on frequency domain analysis

作　　者：高楠[1] 张璨 孟召宗 张宗华[1] GAO Nan;ZHANG Can;MENG Zhaozong;ZHANG Zonghua(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300400,China)

机构地区：[1]河北工业大学机械工程学院,天津300400

出　　处：《光学技术》2023年第4期436-445,共10页Optical Technique

基　　金：国家重点研发计划资助(2017YFF0106404);国家自然科学基金(52075147)。

摘　　要：三维形貌测量技术中,解调相位是分析变形条纹图进而获取物体表面信息的关键步骤。相移法是一种非频域分析方法,需要三幅及以上条纹图,只适用于静态测量;而频域分析的相位解调方法,比如傅里叶变换、窗式傅里叶变换、小波变换以及希尔伯特黄变换,它们只需要一幅条纹图即可提取相位,更加易于操作,自动化程度更高,适用于动态情况的相位提取。文章介绍了几种相位解调方法的研究现状,深入分析了频域分析的相位解调方法的基本原理及其对相位的解调效果,最后总结了频域分析的相位解调方法的特点及对未来的展望。In 3D shape measurement technology,phase demodulation is a key step to analyze deformed fringe patterns to get object surface information.Phase shift method is a non frequency domain analysis method,which requires three or more fringe patterns and is only applicable to static measurement.However,phase demodulation methods based on frequency domain analysis,such as Fourier Transform,Windowed Fourier Transform,Wavelet Transform and Hilbert-Huang Transform,only need one fringe pattern to extract phase,which are easier to operate and more automatic,and suitable for dynamic phase extraction.The status of several phase demodulation methods are researched,and the basic principle of the phase demodulation methods and its demodulation effect on the phase are deeply analyzed,and finally summarizes the characteristics of the phase demodulation method based on frequency domain analysis and its prospects for the future.

关 键 词：光学测量 条纹投影 频域分析 相位解调 

分 类 号：TH741[机械工程—光学工程]