A fusion method of improving filtered interferogram quality

This paper presented a new strategy to improve the quality of interferograms filtered by the Goldstein filter. Two different patch sizes were applied to filtering one noisy interferogram, which resulted to two filtered interferograms. Noise of the interferogram was strongly reduced in low-coherence areas by using a larger patch size, while interferogram structures were preserved by using a smaller patch size. Then the two filtered interferograms were fused, weighted by the coherence map. Experiments with real datasets showed the satisfactory results.