Digital sinusoidal fringe pattern generation: Defocusing binary patterns VS focusing sinusoidal patterns

被引：95

作者：

Lei, Shuangyan ^{[1
]}

Zhang, Song ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

来源：

OPTICS AND LASERS IN ENGINEERING | 2010年 / 48卷 / 05期

关键词：

3-D shape measurement; Optical metrology; Digital fringe projection; Fringe analysis; Defocusing;

D O I：

10.1016/j.optlaseng.2009.12.002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

There are two approaches to generate sinusoidal fringe patterns with a digital-light-processing (DLP) projector: defocusing binary patterns (DBP), and focusing sinusoidal patterns (FSP). This paper will compare the potential errors for both methods induced by the following factors: (1) degree of defocusing, (2) exposure time, (3) synchronization, and (4) projector's nonlinear gamma. Experiments show that in most scenarios, the error for the DBP method is smaller than that of the FSP method. Therefore, generating a sinusoidal fringe image using a DBP method seems to be appealing. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：561 / 569

页数：9

共 19 条

[1]

Ghiglia DC., 1998, 2 DIMENSIONAL PHASE

[2] Fringe projection techniques: Whither we are? [J].