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2-D Phase Unwrapping Algorithm Based on Pseudocorrelation Quality Map

Samir. Aguemoune 1, 2, Faiza. Hocine 1, Aichouche. Belhadj Aissa 1, and Abdelhakim. Ayadi 2
1. Faculty of Electronics and Computer Science, University of Science and Technology Houari Boumediene (USTHB), Algeria, Algiers
2. Seismological Studies Division, Centre of Research in Astronomy Astrophysics and Geophysics (CRAAG), Algeria, Algiers

Abstract—Phase unwrapping is the mathematical problem-solving that appears in several research areas such as: InterferometricSynthetic Aperture Radar (InSAR), optical interferometry and adaptive optics. Phase unwrapping is an essential and critical step in interferometric processing. It consists in retrieving theabsolute phase from modulo-2D phase. In this paper, we propose a 2-D phase unwrapping algorithm based on a contextual pseudocorrelation quality map and non-continuouspath unwrapping. It measures the variability of the phase relative to the discontinuities and the transitions of the fringes in the interferogram. The proposed method has been tested using synthetic and real interferograms.  
Index Terms—InSAR, interferogram, phase unwrapping, quality map, contextual pseudocorrelation, unwrapping-path

Cite: Samir. Aguemoune, Faiza. Hocine, Aichouche. Belhadj Aissa, and Abdelhakim. Ayadi, "2-D Phase Unwrapping Algorithm Based on Pseudocorrelation Quality Map," Journal of Image and Graphics, Vol. 2, No. 2, pp. 94-99, December 2014. doi: 10.12720/joig.2.2.94-99