RT Journal Article
T1 Steerable spatial phase shifting applied to single-image closed-fringe interferograms
A1 Quiroga Mellado, Juan Antonio
A1 Servín Guirado, Manuel
A1 Estrada, Julio César
A1 Gómez Pedrero, José Antonio
AB It is well known that spatial phase shifting interferometry (SPSI) may be used to demodulate two-dimensional (2D) spatial-carrier-interfrograms. In these crises the application of SPSI is straightforward because the modulating phase is a monotonic increasing function of space. However, this is not true when we apply SPSI to demodulate a single-image interferogram containing closed fringes. This is because using these algorithms, one would obtain a wrongly demodulated monotonic phase all over the 2D space. We present a technique to overcome this drawback and to allow any SPSI algorithm to be used as a single-image fringe pattern demodulator containing closed fringes. We make use of the 2D spatial orientation direction of the fringes to steer (orient) the one-dimensional SPSI algorithm in order to correctly demodulate the nonmonotonic 2D phase all over the interferogram.
PB The Optical Society of America
SN 0003-6935
YR 2009
FD 2009-04-20
LK https://hdl.handle.net/20.500.14352/43978
UL https://hdl.handle.net/20.500.14352/43978
LA eng
NO © 2009 Optical Society of America.We thank the Ministerio de Ciencia y Tecnología of Spain for the financial support of this work given by project DPI2005-03891. Also M. Servin and J. C. Estrada acknowledge the financial support of theMexican Consejo Nacional de Ciencia y Tecnología (CONACYT).
NO Ministerio de Ciencia y Tecnología of Spain
NO Mexican Consejo Nacional de Ciencia y Tecnología (CONACYT)
DS Docta Complutense
RD 9 abr 2025