Two-step demodulation based on the Gram-Schmidt orthonormalization method

被引：172

作者：

Vargas, J. ^{[1
]}

Antonio Quiroga, J. ^{[2
]}

Sorzano, C. O. S. ^{[1
]}

Estrada, J. C. ^{[3
]}

Carazo, J. M. ^{[1
]}

机构：

[1] Ctr Nacl Biotecnol CSIC, Biocomp Unit, Canto Blanco 28049, Madrid, Spain

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

[3] Ctr Invest Opt AC, Col Lomas Campestre, Leon 37150, Guanajuato, Mexico

来源：

OPTICS LETTERS | 2012年 / 37卷 / 03期

关键词：

PHASE-SHIFTING INTERFEROMETRY; ALGORITHM;

D O I：

10.1364/OL.37.000443

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This Letter presents an efficient, fast, and straightforward two-step demodulating method based on a Gram-Schmidt (GS) orthonormalization approach. The phase-shift value has not to be known and can take any value inside the range (0, 2 pi)excluding the singular case, where it corresponds to pi. The proposed method is based on determining an orthonormalized interferogram basis from the two supplied interferograms using the GS method. We have applied the proposed method to simulated and experimental interferograms, obtaining satisfactory results. A complete MATLAB software package is provided at http://goo.gl/IZKF3. (C) 2012 Optical Society of America

引用

页码：443 / 445

页数：3

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