Phase diversity technique with sparse regularization in liquid crystal adaptive optics system

doi:10.1117/1.Jatis.4.4.049007

CIOMP OpenIR

	Phase diversity technique with sparse regularization in liquid crystal adaptive optics system
	Wu, D. S.; Yang, C. L.; Zhang, P. G.; Xu, Z. H.; Xu, H. Y.; Zhang, X. Y.; Cao, Z. L.; Mu, Q. Q.; Xuan, L.
	2018
发表期刊	Journal of Astronomical Telescopes Instruments and Systems
ISSN	2329-4124
卷号	4 期号:4 页码:8
摘要	Phase diversity (PD) technique is an effective method for wavefront sensing and image restoration in adaptive optics (AO). Classical PD with Tikhonov regularization can achieve proper wavefront estimation but constantly results in overly smooth images. Nonlocal centralized sparse representation (NCSR) based on nonlocal self-similarity and the sparsity model is combined with PD to obtain high-resolution images. The proposed method contains two steps: the first step is obtaining wavefront from ordinary PD with Tikhonov regularization, and the second step is deblurring the image with NCSR other than Tikhonov regularization. Numerical simulations show that the peak signal-to-noise ratios and structural similarity index metrics of deblurred images by the proposed method are higher than those by the traditional method. This work also studies the influence of weak noise. Initially, the proposed method is applied to a liquid crystal AO system, where the highest spatial resolutions that can be clearly distinguished are 1.59x diffraction limitation with AO on, 1.41x diffraction limitation with traditional PD, and 1.26x diffraction limitation with the proposed method. The proposed approach can be widely used for AO postprocessing in ground-based telescopes, fluorescence microscopes, and other applications. (c) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)
关键词	phase diversity sparse regularization image restoration liquid crystal adaptive optics image-restoration aberrations Engineering Instruments & Instrumentation Optics
DOI	10.1117/1.Jatis.4.4.049007
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61105
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Wu, D. S.,Yang, C. L.,Zhang, P. G.,et al. Phase diversity technique with sparse regularization in liquid crystal adaptive optics system[J]. Journal of Astronomical Telescopes Instruments and Systems,2018,4(4):8.
APA	Wu, D. S..,Yang, C. L..,Zhang, P. G..,Xu, Z. H..,Xu, H. Y..,...&Xuan, L..(2018).Phase diversity technique with sparse regularization in liquid crystal adaptive optics system.Journal of Astronomical Telescopes Instruments and Systems,4(4),8.
MLA	Wu, D. S.,et al."Phase diversity technique with sparse regularization in liquid crystal adaptive optics system".Journal of Astronomical Telescopes Instruments and Systems 4.4(2018):8.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Phase diversity tech（3114KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载