Normalization and smoothing algorithm for electronic speckle-pattern interferometry fringes

被引：4
|
作者：
Ochoa, Noe Alcala [1 ]
机构：
[1] Ctr Invest Opt, Guanajuato, Mexico
来源：
OPTICAL ENGINEERING | 2008年 / 47卷 / 04期
关键词：
speckle interferometry; shearography; interferometry; image enhancement; filtering;
D O I：
10.1117/1.2908959
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This work points out that a modification of the fringe analysis method proposed by Kreis may serve as a normalization and filtering method for electronic speckle-pattern interferometry (ESPI) fringes. By rotating a half-plane in the frequency space, a fringe pattern may be normalized without being distorted significantly. If a passband filter is used during the rotation, a smoothed fringe pattern is obtained. Experimental verification is presented using images obtained from ESPI. (C) 2008 Society of Photo-Optical Instrumentation Engineers.
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页数：7
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