Post-processing of Adaptive Optics Images Based on Frame Selectionand Multi-frame Blind deconvolution

摘要

The adaptive optics can only partially compensate the image blurred by atmospheric turbulence due to the observingcondition and hardware restriction . A post-processing method based on frame selection and multi-frames blinddeconvolution to improve images partially corrected by adaptive optics is proposed . The appropriate frames which aresuitable for blind deconvolution from the recorded AO close-loop frames series are selected by the frame selection technique and then do the multi-frame blind deconvolution. There is no priori knowledge except for the positive constraint in blind deconvolution. It is benefit for the use of multi-frame images to improve the stability andconvergence of the blind deconvolution algorithm. The method had been applied in the image restoration of celestial bodies which were observed by 1.2m telescope equipped with 61-element adaptive optical system at Yunnan Observatory. The results show that the method can effectively improve the images partially corrected by adaptiveoptics.