| 数字激光散斑的L型梯度位移检测法 |
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| 引用本文： | 宫婷,郭立.数字激光散斑的L型梯度位移检测法[J].光电子技术,2007,27(2):115-118,134. |
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| 作者姓名： | 宫婷 郭立 |
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| 作者单位： | 中国科技大学电子科学与技术系,合肥,230027 |
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| 摘 要： | 利用数字激光散斑图像测量物体的形变和微小位移是一种新兴的非接触测量方法,为提高这种测量方法的速度及精度,提出一种针对数字散斑图像的L型梯度位移检测法.该方法将现有的梯度算法扩展到二维空间并做变形,对散斑图像进行梯度运算,测量出位移.大量实验证明,上述算法可行,能够精确测出微小位移,且运算速度较快.
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| 关 键 词： | 激光散斑 数字图像处理 微小位移测量 梯度 L型 |
| 文章编号： | 1005-488X（2007）02-0115-04 |
| 修稿时间： | 2007-03-13 |
An Efficient Digital Laser Speckle Displacement Tracking Method——L Model Tracking Method Based on Gradient |
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| GONG Ting,GUO Li.An Efficient Digital Laser Speckle Displacement Tracking Method——L Model Tracking Method Based on Gradient[J].Optoelectronic Technology,2007,27(2):115-118,134. |
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| Authors: | GONG Ting GUO Li |
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| Affiliation: | Department of Electronic Science and Technology, University of Science and Technology of China, Hefei, 230027, CHN |
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| Abstract: | It is a rising non-contact measuring method to detect minor distortions and displacements using digital laser speckle images. To improve the speed of the measurement, a new speckle tracking method- L model tracking method based on gradient is proposed. In order to find the displacement of speckle images, the gradient of digital laser speckle image is computed by extending the existing gradient method to 2-D and developing it. Many experiments prove that this method is feasible. It can find out the tiny displacement of the speckle images effectively and quickly. |
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| Keywords: | laser speckle digital image processing tiny displacement measurement gradient L model |
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