基于小波脊的自适应傅里叶变换包裹相位滤波技术  

Filtering Wrapped Phase Map with Adaptive Window Fourier Transform Based on Wavelet Ridge

作　　者：张伟[1] 王红霞[1] 任爱华[1] 孙国兴[1] 

机构地区：[1]湖北汽车工业学院机械工程学院,湖北十堰442002

出　　处：《湖北汽车工业学院学报》2017年第3期38-41,45,共5页Journal of Hubei University Of Automotive Technology

基　　金：湖北省自然基金(2014CFB624);湖北汽车工业学院博士科研启动基金项目(BK201602)

摘　　要：应用小波变换法提取变形条纹小波脊的相位信息并获得全场包裹相位,并采用窗口傅立叶变换对包裹相位图进行滤波。在滤波过程中,通过调节小波脊参数来调整滤波窗口的大小,使窗口大小与变形条纹频率相匹配,从而提高包裹相位图滤波的效率和质量,获得较高质量的包裹相位图。实验结果表明:本方法有效提高了条纹图解包质量和效率,获得了较高的测量精度。The wrapped phase map was extracted from a fringe pattern by using wavelet transform and filtered by Window Fourier Transform （WFT）. In the processing of filtering the wrapped phase map, the size of the filtering-window used to match the deformed fringed local frequency, was adjusted by the wavelet ridge parameters. The time of filtering wrapped phase map was reduced and the quality of the wrapped phase map was improved. The result shows that the proposed method has a higher quality and efficiency of unwrapping wrapped phase maps, and a higher accuracy of measurement.

关 键 词：滤波 小波变换 窗口傅立叶变换 

分 类 号：TN247[电子电信—物理电子学] TP391.41[自动化与计算机技术—计算机应用技术]