Adaptive monogenic filtering and normalization of ESPI fringe patterns

被引:53
作者
Guerrero, JA [1 ]
Marroquin, JL [1 ]
Rivera, M [1 ]
Quiroga, JA [1 ]
机构
[1] Ctr Invest Matemat, Guanajuato 360005, Gto, Mexico
关键词
D O I
10.1364/OL.30.003018
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A technique is presented for filtering and normalizing noisy fringe patterns, which may include closed fringes, so that single-frame demodulation schemes may be successfully applied. It is based on the construction of an adaptive filter as a linear combination of the responses of a set of isotropic bandpass filters. The space-varying coefficients are proportional to the envelope of the response of each filter, which in turn is computed by using the corresponding monogenic image [Felsberg and Sommer, IEEE Trans. Signal Process. 49, 3136 (2001)]. Some examples of demodulation of real Electronic Speckle Pattern Interferometry (ESPI) images patterns are presented. (c) 2005 Optical Society of America
引用
收藏
页码:3018 / 3020
页数:3
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