LIU Lili, SHU Ning, GONG Yan, ZHANG Zhijia. Gradient Weighted Periodic Median Algorithm for Filtering Interferogram Noise[J]. Geomatics and Information Science of Wuhan University, 2005, 30(8): 716-719.
Citation:
LIU Lili, SHU Ning, GONG Yan, ZHANG Zhijia. Gradient Weighted Periodic Median Algorithm for Filtering Interferogram Noise[J]. Geomatics and Information Science of Wuhan University, 2005, 30(8): 716-719.
LIU Lili, SHU Ning, GONG Yan, ZHANG Zhijia. Gradient Weighted Periodic Median Algorithm for Filtering Interferogram Noise[J]. Geomatics and Information Science of Wuhan University, 2005, 30(8): 716-719.
Citation:
LIU Lili, SHU Ning, GONG Yan, ZHANG Zhijia. Gradient Weighted Periodic Median Algorithm for Filtering Interferogram Noise[J]. Geomatics and Information Science of Wuhan University, 2005, 30(8): 716-719.
1School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China;2School of Geodesy and Geomatics, Wuhan University, 129 Luoyu Road, Wuhan 430079, China
On the basis of the research of periodic median algorithm, a new adaptive algorithm is present. The moving mask average with adaptive weight is conducted, which is based upon the gradient of phase. The less of the weight is corresponding to the larger gradient value so that the boundary of the fringe is not blurred. Additionally , the moving mask is small enough to maintain the continuities of the fringes. Comparing with existing approach for phase noise filtering , the effectiveness of the proposed approach is verified with the interferogram generated from ERS-1/2 InSAR data.
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