Quiroga Mellado, Juan AntonioServín Guirado, Manuel2023-06-202023-06-202003-09-010030-401810.1016/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