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Quiroga Mellado, Juan Antonio ; Guerrero, J. A. ; Marroquín Zaleta, José Luis ; Rivera Meraz, M. | Optical Society of America | 2005-11-15A technique is presented for filtering and normalizing noisy fringe patterns, which may include closed fringes, so that single-frame demodulation schemes may be successfully applied. It is based on the construction of an adaptive filter as a lin[...]texto impreso
Quiroga Mellado, Juan Antonio ; Servín Guirado, Manuel ; Marroquín Zaleta, José Luis ; Crespo Vázquez, Daniel | Optical Society of America | 2005-03The spatial orientation of the fringe has been demonstrated to be a key point in the reliable phase demodulation from a single n-dimensional fringe pattern regardless of the frequency spectrum of the signal. The recently introduced general n-dim[...]texto impreso
Quiroga Mellado, Juan Antonio ; Servín Guirado, Manuel ; Marroquín Zaleta, José Luis | Optical Society of America | 2003-05Quadrature operators are useful for obtaining the modulating phase 0 in, interferometry and temporal signals in electrical communications. In carrier-frequency interferometry and electrical communications, one uses the Hilbert transform to obtai[...]texto impreso
Quiroga Mellado, Juan Antonio ; Servín Guirado, Manuel ; Marroquín Zaleta, José Luis ; Gómez Pedrero, José Antonio | SPIE--The International Society for Optical Engineering | 2003In fringe pattern processing, quadrature operators are useful to obtain the corresponding modulating phase. In the case that a carrier exists (spatial or temporal), there are good methods for phase demodulation as Fourier analysis and asynchrono[...]texto impreso
Quiroga Mellado, Juan Antonio ; Estrada, Julio César ; Servín Guirado, Manuel ; Marroquín Zaleta, José Luis | The Optical Society Of America | 2006-10-16In the last few years, works have been published about demodulating Single Fringe Pattern Images (SFPI) with closed fringes. The two best known methods are the regularized phase tracker (RPT), and the two-dimensional Hilbert Transform method (2D[...]texto impreso
Quiroga Mellado, Juan Antonio ; Marroquín Zaleta, José Luis ; Rodríguez Vera, Ramón | The Optical Society Of America | 1999-12-15A well-founded and computationally fast method is presented for filtering and interpolating noisy and discontinuous wrapped phase fields that preserves both the 2? discontinuities that come from the wrapping effect and the true discontinuities t[...]texto impreso
Quiroga Mellado, Juan Antonio ; Rodríguez Vera, Ramón ; Rayas Álvarez, Juan Antonio ; Marroquín Zaleta, José Luis ; Rivera, Mariano | SPIE--The International Society for Optical Engineering | 2002A well-founded and computationally fast method is presented for filtering and interpolating noisy and discontinuous wrapped phase fields that preserves both the 2? discontinuities that come from the wrapping effect and the true discontinuities t[...]texto impreso
Regularized phase tracking technique for demodulation of isochromatics from a single tricolour image
Quiroga Mellado, Juan Antonio ; Servín Guirado, Manuel ; Marroquín Zaleta, José Luis | IOP Publishing Ltd. | 2002-01In this work we propose a robust fringe demodulation technique applied to the analysis of tricolour isochromatic fringe patterns produced in photoelasticity. The method used is a regularized phase tracking (RPT) algorithm, which takes into accou[...]texto impreso
Quiroga Mellado, Juan Antonio ; Estrada, Julio César ; Servín Guirado, Manuel ; Marroquín Zaleta, José Luis | SPIE--The International Society for Optical Engineering | 2006Sequential methods like the regularized phase tracker (RPT) are commonly used for fringe pattern demodulation with closed fringes. The only drawback of the RPT method is the necessity to implement a two-dimensional (2D) fringe following scanning[...]
