Multiplicative phase-shifting interferometry using optical flow.
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.
Biocomputing Unit, Centro Nacional de Biotecnología-CSIC, C/ Darwin 3, 28049, Cantoblanco (Madrid), Spain. jvargas@cnb.csic.es
J
J
Vargas
J Antonio
JA
Quiroga
C O S
CO
Sorzano
J C
JC
Estrada
M
M
Servín
D000465:Algorithms; D003198:Computer Simulation; D007091:Image Processing, Computer-Assisted; D007368:Interferometry / Q000379:methods*; D008027:Light; D055620:Optical Phenomena