Quiroga Mellado, Juan AntonioServín Guirado, Manuel2023-06-202023-06-202003-09-01[1] M. Servín, J.L. Marroquín, F.J. Cuevas, J. Opt. Soc. Am. A 18 (2001) 689. [2] J.L. Marroquín, R. Rodríguez-Vera, M. Servín, J. Opt. Soc. Am. A 15 (1998) 1536. [3] K.G. Larkin, D.J. Bone, M.A. Oldfield, J. Opt. Soc. Am. A 18 (2001) 1862. [4] M. Servín, J.A. Quiroga, J.L. Marroquín, J. Opt. Soc. Am. 20 (2003) 925. [5] Q. Yu, K. Andersen, W. Osten, W. Jüuptner, Appl. Opt. 20 (1996) 3783. [6] T. Kreis, Holographic Interferometry, Akademie Verlag, Berlin, 1996. [7] S. de Nicola, P. Ferraro, I. Gurov, R. Koviazin, M. Volkov, Meas. Sci. Tech. 11 (2000) 1328. [8] R. Legarda-Saénz, W. Osten, W. Jüuptner, Appl. Opt. 41 (2002) 5519. [9] J.A. Quiroga, J.A. Gómez Pedrero, A. García Botella, Opt. Commun. 197 (2001) 43. [10] J.L. Marroquín, R. Rodríguez-Vera, M. Servín, J. Opt. Soc. Am. A 15 (1998) 1536. [11] A. Asundi, W. Jun, Opt. Eng. 41 (2002) 1400. [12] J.A. Quiroga, M. Servín, F.J. Cuevas, J. Opt. Soc. Am. A 19 (2002) 1524. [13] D. Ghiglia, M.D. Pritt, Two-dimensional Phase Unwrapping, John Wiley, New York, 1998. [14] P.S. Teocaris, E.E. Gdoutos, Matrix Theory of Photoelasticity, Springer-Verlag, Berlin, 1979.0030-401810.1016/j.optcom.2003.07.014https://hdl.handle.net/20.500.14352/50825© 2003 Elsevier B.V. The authors thank the reviewer for his opportune and useful comments. We thank the economical support of this work given by project DPI2002-02104 of the Ministerio de Ciencia y Tecnología of Spain and to the Consejo Nacional de Ciencia y Tecnología of México.Fringe pattern normalization consists in the background suppression and modulation normalization of a given fringe pattern, this process gives as a result a pure sinusoidal phase modulated signal. Normalization is an important operation in the demodulation of the phase from a single fringe pattern where spatially varying background and/or modulation act as error sources. The solution proposed is a direct and isotropic operator, based on the application of an n-dimensional quadrature transform. We have applied the method to simulated as well as experimental data with good results.engjournal articlehttp://dx.doi.org/10.1016/j.optcom.2003.07.014http://www.sciencedirect.com/open access535Quadrature TransformPhaseDemodulationAlgorithmOrientationÓptica (Física)2209.19 Óptica Física