| 基于小波数字滤波的傅里叶变换轮廓法 |
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| 引用本文： | 傅爽,王蕴珊,韩广兵,司书春.基于小波数字滤波的傅里叶变换轮廓法[J].光电子．激光,2004,15(2):205-207. |
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| 作者姓名： | 傅爽 王蕴珊 韩广兵 司书春 |
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| 作者单位： | 山东大学物理与微电子学院,山东,济南,250061;山东大学物理与微电子学院,山东,济南,250061;山东大学物理与微电子学院,山东,济南,250061;山东大学物理与微电子学院,山东,济南,250061 |
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| 摘 要： | 采用一种基于小波数字滤波的傅里叶变换轮廓法测物体三维形貌。先利用小波变换基本滤除变形栅线图中的直流分量和高频分量，再进行相位计算。结果表明，该方法在一定程度上解决了频率混迭的问题，从而也降低了对低通滤波器的设计要求。
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| 关 键 词： | 傅里叶变换轮廓术 小波变换 频率混迭 |
| 文章编号： | 1005-0086(2004)02-0205-03 |
Fourier Transform Profilometry in 3-D Measurement Based on Wavelet Digital Filter |
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| FU Shuang,WANG Yun-shan,HAN Guang-bing,SI Shu-chun.Fourier Transform Profilometry in 3-D Measurement Based on Wavelet Digital Filter[J].Journal of Optoelectronics·laser,2004,15(2):205-207. |
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| Authors: | FU Shuang WANG Yun-shan HAN Guang-bing SI Shu-chun |
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| Affiliation: | FU Shuang,WANG Yun-shan,HAN Guang-bing~*,SI Shu-chun |
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| Abstract: | Before phase demodulation,original modulated grating image was handled with wavelet transform in order to remove the background components and high frequency.This method resolves spectrum overlapping at some extent and reduces the requirement of low-pass filter. |
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| Keywords: | Fourier transform profilometry wavelet transform spectrum overlapping |
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