| S变换引导的窗口傅里叶变换相位提取 |
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| 引用本文： | 郑素珍.S变换引导的窗口傅里叶变换相位提取[J].光学技术,2011,37(2):217-219. |
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| 作者姓名： | 郑素珍 |
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| 作者单位： | 西南石油大学理学院,四川,成都,610500 |
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| 摘 要： | 提出了一种基于S变换引导的自适应窗口傅里叶变换相位提取方法.通过连续S变换,得到局部条纹的最佳变换窗口,可以保证窗口尺寸随变形条纹的频率变化而自动调整,适合复杂物体的面形测量.计算机模拟和实验验证表明,该方法克服了传统窗口傅里叶变换窗口大小固定的缺点,相位提取的误差由-2～8rad降低为-1～1rad,而且还可以得到被...
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| 关 键 词： | 光学测量 S变换 窗口傅里叶变换 相位提取 |
Phase extraction on S-transform guiding windowed Fourier transform |
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| ZHENG Suzhen.Phase extraction on S-transform guiding windowed Fourier transform[J].Optical Technique,2011,37(2):217-219. |
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| Authors: | ZHENG Suzhen |
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| Institution: | ZHENG Suzhen(College of Sciences,Southwest Petroleum University,Chengdu 610500,Sichuan,China) |
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| Abstract: | Adaptive Windowed Fourier Transform(SWFT) in 3-D measurement based on S-transform is proposed.Continuous S-transform is introduced into the Windowed Fourier Transform(WFT) to obtain a best window,which attaches the deformed fringe's local frequency in three-dimension shape measurement for complex object,automatically.Computer simulation and experiment prove that the method overcomes the limitation of WFT with unchangeable width of window all the time,and the error is decreased from-2~8rad to-1~1rad,the modulation distribution function which is used for phase unwrapping is also obtained. |
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| Keywords: | optical measurement S-transform windowed Fourier transform phase extraction |
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