| 频率域数字散斑相关法及其应用 |
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| 引用本文： | 刘东红.频率域数字散斑相关法及其应用[J].应用激光,2000,20(4):179-181. |
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| 作者姓名： | 刘东红 |
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| 作者单位： | 山东工业大学数理系,济南,250061 |
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| 基金项目： | 山东省教委基金资助项目 |
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| 摘 要： | 文章提出频率域数字激斑相关法,用该方法在频率域完成物体变形前后散斑图对应子区域的相关搜索,测量物体的变形位移,避免了空间域数字相关识别中的反复搜索,极大地减小了运算量,提高了信息提取速度,并且具有更高的定位精度和测量精度.
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| 关 键 词： | 数字散班 快速傅立叶变换 变形测量 相关 |
| 修稿时间： | 1999年11月11 |
The Digital Speckle Correlation in Frequency Domain and Its Application |
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| Liu Donghong.The Digital Speckle Correlation in Frequency Domain and Its Application[J].Applied Laser,2000,20(4):179-181. |
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| Authors: | Liu Donghong |
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| Abstract: | In this paper,the digital correlation in the frequency domain is proposed.The correlation search of corresponded speckle subimages of before and after deformation is accomplished to measure object's displacement in the frequency domain.The speed of a cross-correlation calculation,however,is improved considerably by the performance of the digital correlation in the frequency domain with fast Fourier transform algorithms.A more accurate estimate of the location and measurement is obtained by the method. |
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| Keywords: | digital speckle fast fourier transform deformation measurement correlation |
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