| 频率向导的单幅散斑条纹图位相提取方法 |
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| 引用本文： | 李凯,张青川.频率向导的单幅散斑条纹图位相提取方法[J].力学学报,2010,42(3):491-498. |
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| 作者姓名： | 李凯 张青川 |
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| 作者单位： | 上海大学力学系中国科学技术大学近代力学系 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 提出一种基于条纹频率向导的单幅散斑条纹图位相提取技术，可对一般的散斑条纹图进行自动化位相提取. 该方法利用加窗傅里叶运算求得散斑条纹图的条纹频率，并在条纹频率的向导下对散斑条纹图的位相进行提取. 数值模拟和实验结果证实了这一方法的有效性.
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| 关 键 词： | 散斑条纹 位相提取 频率向导 加窗傅立叶运算 |
| 收稿时间： | 2008-10-06 |
| 修稿时间： | 2009-04-15 |
PHASE EXTRACTION FROM A SINGLE SPECKLE FRINGE PATTERN GUIDED BY FREQUENCIES |
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| Li Kai
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Zhang Qingchuan.PHASE EXTRACTION FROM A SINGLE SPECKLE FRINGE PATTERN GUIDED BY FREQUENCIES[J].chinese journal of theoretical and applied mechanics,2010,42(3):491-498. |
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| Authors: | Li Kai Zhang Qingchuan |
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| Institution: | Department of Mechanics, Shanghai University, Shanghai 200444, ChinaDepartment of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | A method for automatic phase extraction from a single
speckle fringe pattern based on the guidance of frequencies is presented.
The method uses a windowed Fourier operation to calculate frequencies of a
fringe pattern, and to demodulate the wrapped phase values of the fringe
pattern in the guidance of the frequencies. The validity of the proposed
method is demonstrated by use of some simulated and experimental fringe
patterns. |
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| Keywords: | speckle fringe patterns phase extraction frequencies guidance windowed Fourier operation |
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