| 激光散斑位移测量方法研究 |
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| 引用本文： | 李晓英,郎晓萍.激光散斑位移测量方法研究[J].北京机械工业学院学报,2008,23(1):39-42. |
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| 作者姓名： | 李晓英 郎晓萍 |
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| 作者单位： | 北京信息科技大学光电信息与通信工程学院,北京100192 |
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| 摘 要： | 激光散斑测量法是在全息方法基础上发展起来的一种测量方法，这种方法具有很强的实用价值。散斑位移测量不仅可以实现离面微位移的测量，也可以进行面内微位移测量。主要是对面内微位移进行了测量研究，利用设计的测量系统将物体发生位移前后的散斑图由CCD记录下来，分别用数字散斑相关法和散斑照相法对散斑图像进行了分析处理，并得出了相应的结论。最后，对以上两种测量法的特点和测量误差产生的原因都作了简单的分析和比较。
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| 关 键 词： | 激光散斑 位移测量 数字图像处理 |
| 文章编号： | 1008-1658(2008)01-0039-03 |
| 修稿时间： | 2008年1月16日 |
Research of displacement measurement based on laser speckle |
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| LI Xiao-ying,LANG Xiao-ping.Research of displacement measurement based on laser speckle[J].Journal of Beijing Institute of Machinery,2008,23(1):39-42. |
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| Authors: | LI Xiao-ying LANG Xiao-ping |
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| Affiliation: | LI Xiao-ying,LANG Xiao-ping (School of Photoelectric Information and Telecommunication Engineering, Beijing Information Science and Technology University, Beijing 100192, China) |
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| Abstract: | The laser speckle based on holography is of great practical value and can measure microdisplacement. In surface micro-displacement is focused on in this paper. The two laser speckle patterns are respectively shot before and after the object is moved. Digital speckle correlation method and speckle photography are used to measure a small displacement moved along x or y axle. The above two methods are compared at the end of the paper. |
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| Keywords: | laser speckle displacement measurement digital image process |
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