Direct demodulation of closed-fringe interferograms based on active contours

被引：6

作者：

Vargas, J. ^{[1
]}

Antonio Quiroga, J. ^{[2
]}

Belenguer, T. ^{[1
]}

机构：

[1] Inst Nacl Tecn Aeroespacial, Lab Instrumentac Espacial, Madrid 28850, Spain

[2] Univ Complutense Madrid, Dept Opt, Fac Ciencias Fis, E-28040 Madrid, Spain

来源：

OPTICS LETTERS | 2010年 / 35卷 / 21期

关键词：

SPURIOUS REFLECTION; PHASE; QUADRATURE;

D O I：

10.1364/OL.35.003550

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We demonstrate a method to directly demodulate closed-fringe interferograms using a kind of active contour called a snake. This method can be used to demodulate a single closed-fringe interferogram when its background illumination and/or contrast terms have a spatial frequency similar to the spatial frequency of the equivalent normalized interferogram. Among other cases, this problematic usually appears in interferometry when spurious reflection appears in the interferogram. In these situations, typical Fourier-based methods are of no help. We show a set of simulations and experimental results that prove the effectiveness of the proposed method. (C) 2010 Optical Society of America

引用

页码：3550 / 3552

页数：3

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