In-plane micro-displacement measurement based on digital speckle correlation method in frequency domain

被引：0
|
作者：
Yang, Yuhang [1 ]
Chen, Yu [1 ]
Li, He [1 ]
Wang, Wensheng [1 ]
机构：
[1] Laboratory of Contemporary Optical Measure Technology, Changchun University of Science and Technology, Changchun 130022, China
来源：
Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2014年 / 43卷 / 04期
关键词：
Data handling - Optical correlation - Speckle - Frequency domain analysis - Displacement measurement;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
When using traditional digital speckle correlation method to measure in -place micro - displacement, the noise and algorithm defects will cause low accuracy or slow data processing. In order to solve these problems, digital speckle correlation method in frequency domain is applied. In-plane micro-displacement measurement has been realized by speckle recording and MATLAB software programming. This method is not only making up for the inadequacies of traditional digital speckle correlation method but also simplifying the repeated adjustment in general optical measurement. Theoretical analysis and experimental results show that digital speckle correlation method in frequency domain for measuring in-plane micro-displacement has many advantages: simple system construction, fast measurement and high accuracy, the measure accuracy can be up to micro level and relative error less than 1%.
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页码：1301 / 1305
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