Fig. 1. Phase map and phase distribution before and after filtering. (a) Original wrapped phase map; (b) phase distribution on the diagonal section of the original wrapped phase map; (c) filtered wrapped phase map; (d) phase distribution on the diagonal section of the filtered wrapped phase map

Fig. 2. Fitting results. (a) Fitting result of phase distribution of the original wrapped phase map; (b) fitting result of phase distribution of the filtered wrapped phase map

Fig. 3. Line chart of RMSE

Fig. 4. Experimental images. (a) Full width butterfly fringe pattern 1; (b) full width butterfly fringe pattern 2; (c) full width circle fringe pattern; (d) local speckle fringe pattern; (e) full width circle fringe pattern under the wide field; (f) fringe pattern of sample with multiple defects

Fig. 5. Line charts of ERMS. (a)-(f) Line charts of ERMS of the experimental images in Fig. 4

Fig. 6. Differential data distribution of ERMS

Fig. 7. Filtering completed images. (a)-(f) Filtering completed images of the experimental images in Fig. 4

Fig. 8. Unwrapping phase maps. (a)-(f) Unwrapping phase maps of the experimental images in Fig. 4