Wavefront reconstruction and three-dimensional shape measurement by two-step dc-term-suppressed phase-shifted intensities

被引：36
|
作者：
Meng, X. F. [1 ]
Peng, X. [1 ]
Cai, L. Z. [2 ]
Li, A. M. [1 ]
Guo, J. P. [1 ]
Wang, Y. R. [2 ]
机构：
[1] Shenzhen Univ, Coll Optoelect Engn, Shenzhen 518060, Peoples R China
[2] Shandong Univ, Dept Opt, Jinan 250100, Peoples R China
来源：
OPTICS LETTERS | 2009年 / 34卷 / 08期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
FRINGE PROJECTION; INTERFEROMETRY; HOLOGRAMS; EXTRACTION;
D O I：
10.1364/OL.34.001210
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A wavefront reconstruction and three-dimensional (3-D) shape measurement method by a two-step phase-shifting algorithm with arbitrary phase shift in (0, pi) is proposed. In this method, only two phase-shifted intensities, with the removal of the dc term by an averaging technique in spatial domain or low-pass filter operation in the frequency domain, are needed, and the other additional measurements are no longer required. The simulation for an irregular wavefront has shown the feasibility, and the optical experiment for a 3-D face mask in the case of a sinusoidal fringe projection system has illustrated the validity of the proposed method. (C) 2009 Optical Society of America
引用
收藏
页码：1210 / 1212
页数：3
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