Three-dimensional shape measurement and calibration for fringe projection by considering unequal height of the projector and the camera

被引：8
|
作者：
Zhu, Feipeng [1 ]
Shi, Hongjian [1 ]
Bai, Pengxiang [1 ]
He, Xiaoyuan [1 ,2 ]
机构：
[1] Southeast Univ, Dept Engn Mech, Nanjing 210096, Peoples R China
[2] Southeast Univ, Key Lab MEMS, Minist Educ, Nanjing 210096, Peoples R China
来源：
APPLIED OPTICS | 2011年 / 50卷 / 11期
基金：
中国国家自然科学基金;
关键词：
PROFILOMETRY; DEFORMATION; OBJECTS; SYSTEM;
D O I：
10.1364/AO.50.001575
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In fringe projection, the CCD camera and the projector are often placed at equal height. In this paper, we will study the calibration of an unequal arrangement of the CCD camera and the projector. The principle of fringe projection with two-dimensional digital image correlation to acquire the profile of object surface is described in detail. By formula derivation and experiment, the linear relationship between the out-of-plane calibration coefficient and the y coordinate is clearly found. To acquire the three-dimensional (3D) information of an object correctly, this paper presents an effective calibration method with linear least-squares fitting, which is very simple in principle and calibration. Experiments are implemented to validate the availability and reliability of the calibration method. (C) 2011 Optical Society of America
引用
收藏
页码：1575 / 1583
页数：9
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