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Título:
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Linear systems theory for the analysis of phase-shifting algorithms
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Autores:
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Quiroga Mellado, Juan Antonio ;
Estrada, Julio César ;
Servín Guirado, Manuel
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Tipo de documento:
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texto impreso
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Editorial:
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SPIE--The International Society for Optical Engineering, 2010
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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 = Sección de libro
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Resumen:
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Phase-shifting algorithms are methods used for recovering the modulating phase of an interferogram sequence obtained by Phase Stepping Interferometry (PSI) techniques. Typically, the number of interferograms in a PSI sequence is from 3 to around 9 interferograms, although we can find algorithms that works with more than 9 interferograms. In this paper, we are going to show the analysis and design of phase-shifting algorithms from the point of view of the linear systems paradigm from digital signal processing. We will show how this paradigm describes in a general fashion the phase-shifting algorithm systems, and how we can easily design tunable phase-shifting algorithms using this simple scheme.
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