用于形状测量的光信号处理

Proceedings of the Sixth International Symposium on Signal Processing and its Applications (Cat.No.01EX467) Pub Date : 1900-01-01 DOI:10.1109/ISSPA.2001.950178

J. H. Lim, M. Ratnam

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引用次数: 1

摘要

由阴影云纹干涉术产生的一组光信号数据代表了正在研究的表面的轮廓。利用现有的一种算法将光信号处理和可视化为三维曲面图和悬臂梁的二维表示。通过测量圆柱体表面轮廓，并将结果与实际测量结果进行比较，对该算法进行了测试和校准。误差分析表明，成像系统的畸变和未准直光源是导致分析误差的两个主要因素。最后，进行了悬臂梁挠度测量实验，并与挠度理论计算结果进行了比较。

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Optical signal processing for shape measurement

A set of optical signal data generated by shadow moire interferometry represents the profile of the surface that is under investigation. An existing algorithm has been used to process and visualize the optical signal into the three dimensional surface plot and a two-dimensional representation for a cantilever. This algorithm was tested and calibrated by measuring a cylinder surface profile and comparing the result with the actual measurement. An error analysis shows that distortion of the imaging system and the uncollimated light source are two major factors that may contribute to error in the analysis. Finally, an experiment was carried out to measure the deflection of a cantilever and the result is compared with the shape obtained from deflection theory.

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Proceedings of the Sixth International Symposium on Signal Processing and its Applications (Cat.No.01EX467)

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