2D Phase Unwrapping by fusion Cut-Line and Quality-Maps

Phase unwrapping is one of the critical step in the feasibility of InSAR processes. It consists in retrieving the absolute phase from modulo 2π. Through this paper, we propose a method of phase unwrapping that combines /fusions the advantages of two methods, namely: The method of phase unwrapping by avoidance of discontinuities, based on creating cut lines and the second method, it is based on local/regional propagation of phase unwrapping by referring to quality maps. The idea is that the quality value between the two target edges of the cut-line is set at zero in the quality maps, then the progress of the unwrapping is performed according to the process of the second method where unwrapping phase by referring to edge quality map. To validate the results, the method has been tested using real interferogram.