Phase-unwrapping algorithm based on radial shearing principle

In order to find the phase information,the noise,the shadow,fringe break,under-sampling and other adverse factors must be overcome.When processing the under-sampling problem,the radial shearing method was introduced into phaseunwrapping process,in which a phase image for unwrapping was obtained by shearing a wrapped phase reconstructed by a wrapped phase built numerically after zooming the original one for several times so that the difficult problem becomes multiple simpler problems.The simulation and experimental results prove that the proposed algorithm can deal with the wrapped phase of serious under-samplings.Compared with the traditional unwrapping algorithms,this algorithm has a wider application.