Quiroga Mellado, Juan AntonioEstrada, Julio CésarServín Guirado, Manuel2023-06-202023-06-202010978-0-8194-8286-010.1117/12.860982https://hdl.handle.net/20.500.14352/45469© (2010) SPIE--The International Society for Optical Engineering. Interferometry XV: Techniques and Analysis (15º. 2010. San Diego, EE.UU.)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.book parthttp://proceedings.spiedigitallibrary.org/metadata only access535Measuring InterferometrySignal ProcessingPhase DemodulationInterferogram AnalysisÓptica (Física)2209.19 Óptica Física