Fast Restoration of Aberration-Degraded Extended Object Based on Local Region Abstraction
Author(s): Wen, LH (Wen, Lianghua); Yang, P (Yang, Ping); Wang, S (Wang, Shuai); Chen, SQ (Chen, Shanqui); Liu, WJ (Liu, Wenjing); Bai, W (Bai, Wei); Xu, ZQ (Xu, Zhiqiang); Wang, FL (Wang, Feilong); Xu, B (Xu, Bing)
Source: IEEE PHOTONICS JOURNAL Volume: 10 Issue: 4 Article Number: 6900613 DOI: 10.1109/JPHOT.2018.2858802 Published: AUG 2018
Abstract: The compensating capability of wavefront sensorless adaptive optics (WFSless AO) system for extended object images degraded by aberration is severely limited to correction speed due to largely sized images and low frame rate of camera. To improve the correction capability of WFSless AO system, a method based on local region abstraction (LRA) is presented according to the sparse characteristics of extended object imaging. The experiment results of image restoration with WFSless AO system based on LRA show that the correction speed of this method is 8-20 times faster than that of the previous method for the static aberration, the image restoration speed is improved by about 3.5 times under the dynamic aberration.
ISSN: 1943-0655
eISSN: 1943-0647