RT Journal Article T1 Multiplicative phase-shifting interferometry using optical flow A1 Quiroga Mellado, Juan Antonio A1 Vargas Balbuena, Javier A1 Estrada, Julio C. A1 Sánchez Sorzano, Carlos Óscar A1 Servín Guirado, Manuel AB Fringe 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. PB The Optical Society of America SN 1559-128X YR 2012 FD 2012-08-20 LK https://hdl.handle.net/20.500.14352/43904 UL https://hdl.handle.net/20.500.14352/43904 LA eng NO © 2012 The Optical Society of America DS Docta Complutense RD 7 jun 2025