基于样本块匹配的干涉图延拓方法

黄菁; 朱日宏; 陈磊

光学学报, 2007, 27 (7): 1217, 网络出版: 2007-08-17

基于样本块匹配的干涉图延拓方法

Interferogram Spreading Method Based on Exemplar Matching

论文大纲

黄菁 ^*朱日宏陈磊

作者单位

南京理工大学电子工程与光电技术学院, 南京 210094

光学测量干涉图延拓样本块匹配快速傅里叶变换法 optical measurement interferogram spreading exemplar matching fast Fourier transforms

摘要

在快速傅里叶变换(FFT)方法处理单幅干涉图原理的基础上,提出一种基于样本块匹配的干涉图延拓方法,利用干涉图像的可信度和等照度线特征,来确定待填充块的优先权,然后在干涉图的已知区域寻找与待填充块最相似的样本块来进行填充。充分利用了干涉图的条纹特征,结合梯度变化方向有效地合成纹理信息,具有很好的延拓效果。最后将该干涉图延拓方法与傅里叶变换,合适的滤波函数和相位解包方法结合起来形成整套单幅干涉图处理方法。采用该单幅干涉图处理方法获得的波面峰谷值与Zygo移相干涉仪得到的平均相差不到λ/100,并且两种方法获得的波面均方根值平均相差不到λ/200。

Abstract

Based on single interferogram analysis method using fast Fourier transform (FFT), an interferogram spreading method based on exemplar matching is proposed. By analyzing the confidence and isophote of interferogram, the priority that is assigned to each patch on the fill front are calculated. After the patch most similar to the patch on the fill front is found in the source region of the interferogram, the value of each pixel in the patch on the fill front is copied from its corresponding position in the most similar patch. This spreading algorithm takes full advantage of the fringe characteristics and the directions of isophotes to synthesize the structure and texture information of interferogram and achieves good spreading effect. The proposed spreading algorithm is combined with FFT, filtering and phase unwrapping together to from a single interferogram analysis method of high-accuracy. The differences between the wave surface peak-valley value obtained by the proposed single interferogram analysis method and Zygo interferometer is less than λ/100, and the difference between the wave surface root-mean-square value obtained by these two methods is less then λ/100.

参考文献

[1] Chen Lei, Wang Qing, Zhu Rihong. Measurement of the homogeneity of refractive index of the germanium crystal using IR interferometer[J]. Chin. J. Lasers, 2005, 32(3): 404～406 (in Chinese)
陈磊,王青, 朱日宏. 使用红外干涉仪测量锗材料折射率均匀性[J]. 中国激光, 2005, 32(3): 404～406

[2] Chen Daojiong, Shan Shibao, Wei Guanghui et al.. Study of adaptive piezoelectric phase shifter[J]. Acta Optica Sinica, 2006, 26(7): 1027～1031 (in Chinese)
陈道炯,单世宝, 韦光辉等. 自适应压电式移相器的研究[J]. 光学学报, 2006, 26(7): 1027～1031

[3] Zhu Rihong, Wang Qing, Chen Lei et al.. A self-correcting method of phase shifter in phase shifting interferometry[J]. Acta Optica Sinica, 1998, 18(7): 932～937 (in Chinese)
朱日宏, 王青, 陈磊等. 移相干涉技术中移相器的自校正方法[J]. 光学学报, 1998, 18(7): 932～937

[4] M. Takeda. Spatial carrier heterodyne techniques for precision interferometry and profilometry: an overview[C]. Proc. SPIE, 1989, 1121: 73～88

[5] . J. Bone, H.-A. Bachor, R. J. Sandeman. Fringe-pattern analysis using a 2-D Fourier transform[J]. Appl. Opt., 1986, 25(10): 1653-1660.

[6] . Roddier, F. Rodier. Interferogram analysis using Fourier transform techniques[J]. Appl. Opt., 1987, 26(9): 1668-1673.

[7] . H. Massig, J. Heppner. Fringe-pattern analysis with high accuracy by use of the Fourier-transform method: theory and experimental tests[J]. Appl. Opt., 2001, 40(13): 2081-2088.

[8] . . Spatial scanning method and FFT algorithm for analyzing interferogram[J]. Acta Armamentarii, 1989, 10(4): 24-31.

[9] Zhang Jie, Chen Mingyi. A new algorithm of interference fringe extrapolation for Fourier transform analysis[J]. Optical Instrument, 1996, 18(1): 20～26 (in Chinese)
张婕,陈明仪. 傅里叶变换中干涉条纹的外插新算法[J]. 光学仪器, 1996, 18(1): 20～26

[10] . A modified algorithm for fringe-pattern extrapolation based on FFT analysis[J]. J. Shanghai University (Natural Science), 2003, 9(5): 456-458.

[11] . Extrapolating for interferogram with the least-squares iteration[J]. Chin. J. Scientific Instrument, 2001, 22(3): 376-377.

[12] . Criminisi, P. Pérez, K. Toyama. Region filling and object removal by exemplar-based image inpainting[J]. IEEE Transactions on Image Processing, 2004, 13(9): 1200-1212.

黄菁, 朱日宏, 陈磊. 基于样本块匹配的干涉图延拓方法[J]. 光学学报, 2007, 27(7): 1217. 黄菁, 朱日宏, 陈磊. Interferogram Spreading Method Based on Exemplar Matching[J]. Acta Optica Sinica, 2007, 27(7): 1217.

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