2D phase unwrapping using Markov random field based phase locked loops

摘要

In this work, a Markov random field based phase locked loop is proposed for phase unwrapping. The neighboringudpixels are used to update the phase estimate of the centering pixel. The performance of the proposed method isudevaluated for both synthetic and real interferometric phase. For terrains with relatively low slopes, the phaseudunwrapping is done successfully. However, in case of high fringe frequency, the method fails to unwrap the wholeudphase gradient. Nevertheless, the noise suppression capability of phase locked loop is remarkable.