Flexible and accurate implementation of a binocular structured light system

被引:47
作者
Yang, Rongqian [1 ]
Cheng, Sheng [1 ]
Chen, Yazhu [1 ]
机构
[1] Shanghai Jiao Tong Univ, Biomed Instrument Inst, Shanghai 200240, Peoples R China
关键词
three-dimensional (3D) surface measurement; binocular system; calibration; structured light;
D O I
10.1016/j.optlaseng.2007.12.008
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper presents a practical implementation of a binocular system for three-dimensional (3D) surface measurement. Manufacturing procedures are easy to implement because this system does not require that the optical axes of two cameras' lenses be coplanar and the structured light sheets be perpendicular to that plane. The method of structured light calibration is proposed to obtain the parameters of the structured light sheets. This calibration method can tolerate the surface condition of the calibration board. To eliminate the effect caused by the distortion of projector lens, each structured light sheet is fitted to a conicoid. Meanwhile, data acquired from two cameras are transformed into a unique coordinate system to avoid 3D data matching. Experiments are conducted to validate the flexibility, accuracy, and desirability of our system. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:373 / 379
页数:7
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