Phase recovery from a single interferogram with closed fringes by phase unwrapping

被引:9
作者
Munoz-Maciel, Jesus [1 ]
Casillas-Rodriguez, Francisco J. [1 ]
Mora-Gonzalez, Miguel [1 ]
Pena-Lecona, Francisco G. [1 ]
Duran-Ramirez, Victor M. [1 ]
Gomez-Rosas, Gilberto [2 ]
机构
[1] Univ Guadalajara, Ctr Univ Lagos, Lagos De Moreno 47460, Jalisco, Mexico
[2] Univ Guadalajara, Ctr Univ Ciencias Exactas & Ingn, Guadalajara 44430, Jalisco, Mexico
关键词
FOURIER-TRANSFORM METHOD; NATURAL DEMODULATION; QUADRATURE TRANSFORM; PATTERNS;
D O I
10.1364/AO.50.000022
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We describe a new algorithm for phase determination from a single interferogram with closed fringes based on an unwrapping procedure. Here we use bandpass filtering in the Fourier domain, obtaining two wrapped phases with sign changes corresponding to the orientation of the applied filters. An unwrapping scheme that corrects the sign ambiguities by comparing the local derivatives is then proposed. This can be done, assuming that the phase derivatives do not change abruptly among adjacent areas as occurs with smooth continuous phase maps. The proposed algorithm works fast and is robust against noise, as demonstrated in experimental and simulated data. (C) 2010 Optical Society of America
引用
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页码:22 / 27
页数:6
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