| 基于三次插值坐标变换的反向条纹投影技术 |
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| 引用本文： | 蔡元元,苏显渝,李勇,李泽仁.基于三次插值坐标变换的反向条纹投影技术[J].光电工程,2006,33(5):85-90. |
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| 作者姓名： | 蔡元元 苏显渝 李勇 李泽仁 |
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| 作者单位： | 四川大学,光电科学技术系,四川,成都,610064;中国工程物理研究院流体物理研究所,四川,绵阳,621900 |
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| 基金项目： | 中国科学院资助项目;中国工程物理研究院联合基金 |
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| 摘 要： | 反向条纹投影技术是一种应用于在线或批量检测的快速而稳定的光学三维面形检测技术。本文提出了一种利用分片二元三次多项式插值来确定摄像机和投影器坐标变换关系的方法,它通过在摄像机10个像素点区域内拟和两个二元三次多项式,来求得该区域内投影器像素点对应的摄像机坐标值。计算机模拟和实物的对比实验表明,该方法能有效地提高反向条纹投影的精度。
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| 关 键 词： | 面形测量 工业质量控制 反向条纹投影 计算机模拟 |
| 文章编号： | 1003-501X(2006)05-0085-06 |
| 收稿时间： | 2005-06-27 |
| 修稿时间： | 2005-11-30 |
Inverse fringe projection technique based on the coordinate transformation using cubic interpolation |
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| CAI Yuan-yuan,SU Xian-yu,LI Yong,LI Ze-ren.Inverse fringe projection technique based on the coordinate transformation using cubic interpolation[J].Opto-Electronic Engineering,2006,33(5):85-90. |
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| Authors: | CAI Yuan-yuan SU Xian-yu LI Yong LI Ze-ren |
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| Affiliation: | 1. Department ofOpto-Electronics, Sichuan University, Chengdu 610064, China; 2. The Institute of Fluid Physics, the China Academy of Engineering Physics, Mianyang 621900, China |
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| Abstract: | Inverse fringe projection technique is one of the fast and robust optical 3D shape inspection techniques, which is applied to online or batch inspection. In this paper, a new method is proposed that adopts binary cubic polynomial interpolation in subsections to get the geometrical inversion of the coordinates between camera and projector. This method fits two binary cubic polynomials in a subsection composed of ten camera pixels to obtain the corresponding camera coordinate of projector pixels within this subsection. Through comparison of experiments using computer stimulation and a real object respectively, a conclusion is gotten that this method can improve precision of inverse fringe projection effectively. |
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| Keywords: | Surface shape measurment Industrial quality control Inverse fringe projection Computer simulation |
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