A new algorithm for large surfaces profiling by fringe projection

被引:16
作者
Pavageau, S
Dallier, R
Servagent, N
Bosch, T
机构
[1] ENSEEIHT, LEN7, Elect Lab, F-31071 Toulouse 7, France
[2] Ecole Mines Nantes, F-44307 Nantes 3, France
关键词
fringe projection; phase shifting; profilometry; object reconstruction;
D O I
10.1016/j.sna.2003.12.030
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A method for profiling surface objects based on the fringe projection method and a phase shifting algorithm is described. The application of this method to large surfaces is problematic since the calibration step requires the use of a reference plane as large as the object. A new algorithm based on least-squares method has also been developed to bypass this calibration step, and so the use of a reference plane. First experimental results on a carbon panel and on a parabolic aerial are presented to show the validity of the proposed algorithm. Accuracy of 1 mm has been obtained for an object of 1 m and 20 cm long, while sensitivity has been proved to be of the order of 100 mum. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:178 / 184
页数:7
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