Quiroga Mellado, Juan AntonioVargas Balbuena, JavierEstrada, Julio C.Sánchez Sorzano, Carlos ÓscarServín Guirado, Manuel2023-06-202023-06-202012-08-201559-128X10.1364/AO.51.005903https://hdl.handle.net/20.500.14352/43904© 2012 The Optical Society of AmericaFringe patterns with a multiplicative phase shift among them appear in experimental techniques as photoelasticity and RGB shadow moiré, among others. These patterns cannot be processed using standard phase-shifting demodulation techniques. In this work, we propose to use a multiframe regularized optical flow algorithm to obtain the interesting modulating phase. The proposed technique has been applied to simulated and experimental interferograms obtaining satisfactory results.engjournal articlehttp://dx.doi.org/10.1364/AO.51.005903http://www.opticsinfobase.org/open access535Fringe PatternsDemodulationAlgorithmÓptica (Física)2209.19 Óptica Física