Fourier transform profilometry: a review

被引:634
作者
Su, XY [1 ]
Chen, WJ [1 ]
机构
[1] Sichuan Univ, Optoelect Dept, Chengdu 610064, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1016/S0143-8166(01)00023-9
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Fourier transform plofilometry is one of the popular non-contact 3-D measurement methods, where a Ronchi grating or sinusoidal grating is projected onto a diffuse three-dimensional surface, and the resulting deformed grating image is detected by a CCD camera and processed by a computer. This method requires only one Frame (or two frames) of the deformed fringe pattern in some algorithms to retrieve the surface of measured object, so it has obvious advantage for real time data acquisition and 3-D measurement of dynamic process. In this paper, we review some algorithms ill FTP, discuss some important problems, including frequency spectra overlapping, phase unwrapping, sampling, and 3-D measurement of dynamic process. With the development of computer hardware and software and availability of high-resolution image grabber, FTP method will be a promising one for acquiring 3-D data of object, and more acid more researchers pay attention to it. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:263 / 284
页数:22
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