Título:
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Steerable spatial phase shifting applied to single-image closed-fringe interferograms
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Autores:
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Quiroga Mellado, Juan Antonio ;
Servín Guirado, Manuel ;
Estrada, Julio César ;
Gómez Pedrero, José Antonio
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Tipo de documento:
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texto impreso
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Editorial:
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The Optical Society Of America, 2009-04-20
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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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.
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En línea:
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https://eprints.ucm.es/id/eprint/22823/1/QuirogaJA32.pdf
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