Phase extraction from a single speckle fringe pattern guided by frequencies

A method for automatic phase extraction from a singlespeckle fringe pattern based on the guidance of frequencies is presented.The method uses a windowed Fourier operation to calculate frequencies of afringe pattern, and to demodulate the wrapped phase values of the fringepattern in the guidance of the frequencies. The validity of the proposedmethod is demonstrated by use of some simulated and experimental fringepatterns.