Quiroga Mellado, Juan AntonioServín Guirado, ManuelEstrada, Julio CésarVargas Balbuena, Javier2023-06-202023-06-202011-03-141094-408710.1364/OE.19.005002https://hdl.handle.net/20.500.14352/43926© The 2011 Optical Society of America. This work was partially supported by the Spanish Ministry of Science and Technology under grant DPI2009-09023.In phase sampling interferometry, existing temporal analysis methods are sensitive to border effects and cannot deal with missing data. In this work we propose a quadrature filter that allows a reliable dynamic phase measurement for every sample, even in the cases involving few samples or missing data. The method is based on the use of a regularized least squares cost function that enforces the quadrature character of the filter. A comparison with existing techniques shows the effectiveness of the proposed method.engjournal articlehttp://dx.doi.org/10.1364/OE.19.005002http://www.opticsinfobase.org/open access535Speckle-Pattern InterferometryShifting AlgorithmsTransformÓptica (Física)2209.19 Óptica Física