Gorthi, SaisivaRajshekhar, G.Rastogi, Pramod2011-05-272011-05-27201110.1016/j.optlastec.2010.05.002https://infoscience.epfl.ch/handle/20.500.14299/67927WOS:000282109000008Fringe projection techniques are popular tools for three-dimensional shape measurement in optical metrology. In these techniques, the information about the shape or the surface profile of an object is usually encoded in the phase of a recorded fringe pattern. The paper presents a high-order instantaneous moments based method for phase estimation in fringe projection. The method employs a piecewise polynomial phase approximation approach and uses high-order instantaneous moments to determine the polynomial phase coefficients to estimate the phase. The method's working is demonstrated using simulation examples and its practical applicability is validated through a shape measurement experiment.fringe projectiontext::journal::journal article::research article