| S变换轮廓术中消除条纹非线性影响的方法 |
| |
| 引用本文： | 钟敏,陈文静,蒋模华.S变换轮廓术中消除条纹非线性影响的方法[J].光学学报,2011(11):130-139. |
| |
| 作者姓名： | 钟敏 陈文静 蒋模华 |
| |
| 作者单位： | 四川大学电子信息学院光电系; |
| |
| 基金项目： | 国家自然科学基金(60838002,60677028)资助课题 |
| |
| 摘 要： | S变换是短时傅里叶变换和小波变换的延伸和推广,是一种无损可逆的非平稳信号时频分析方法.它不仅具有线性、多分辨性和逆变换唯一性等特点,而且其反变换与傅里叶变换保持着直接的联系.在S变换中,以简谐波作为基波,以可以同时进行伸缩和平移的高斯函数作为窗函数.同短时傅里叶变换相比,S变换的时频分辨率可以同时达到最佳,同小波变换相...
|
| 关 键 词： | 测量 信息光学 时频分析 S变换轮廓术 CCD非线性 |
Elimination of Nonlinear Error in Deformed Fringe Pattern by S-Transform Profilometry |
| |
| Zhong Min Chen Wenjing Jiang Mohua.Elimination of Nonlinear Error in Deformed Fringe Pattern by S-Transform Profilometry[J].Acta Optica Sinica,2011(11):130-139. |
| |
| Authors: | Zhong Min Chen Wenjing Jiang Mohua |
| |
| Affiliation: | Zhong Min Chen Wenjing Jiang Mohua(Opto-Electronic Department,Sichuan University,Chengdu,Sichuan 610064,China) |
| |
| Abstract: | S-Transform,a hybrid and extension of the short-time(or windowed) Fourier transform and the wavelet transform,is one of lossless and reversible time-frequency analysis methods,which is suitable to analyze non-stationary signals.It not only has advantages of linearity,multi-resolution and uniqueness of inverse,but also its inverse transform directly keeps in contact with the Fourier transform.In S-Transform,the harmonic wave is used as a basic element function,and the window function is a Gaussian function w... |
| |
| Keywords: | measurement information optics time-frequency analysis S-transform profilometry nonlinearity of CCD |
| 本文献已被 CNKI 等数据库收录！ |
|
