Fig. 5.
Comparison of the microsphere PSF map before and after restoration. (a) The original measured PSF map. (b-f) Restoration results of MNBSVD, BSRD, FRSP, CSINR, and the proposed method, respectively. (g-l) Enlarged views of the red rectangular region in (a-f). (m), (p), and (s) Locations of three representative PSFs in the original PSF map and the corresponding line-profile directions, with T and R denoting the local tangential and radial directions, respectively. (n), (q), and (t) Line profiles along T1, T2, and T3, respectively. (o), (r), and (u) Line profiles along R1, R2, and R3, respectively. The FWHM values calculated from line profiles of different methods are listed in the corresponding legends.