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题名:
Restoration of turbulence-degraded extended object using the stochastic parallel gradient descent algorithm: numerical simulation
作者: Yang, Huizhen1,2; Li, Xinyang1; Gong, Chenglong2; Jiang, Wenhan1
刊名: OPTICS EXPRESS
出版日期: 2009-03-02
卷号: 17, 期号:5, 页码:3052-3062
文章类型: Article
英文摘要: An adaptive optics (AO) system with Stochastic Parallel Gradient Descent (SPGD) algorithm and a 61-element deformable mirror is simulated to restore the image of a turbulence-degraded extended object. SPGD is used to search the optimum voltages for the actuators of the deformable mirror. We try to find a convenient image performance metric, which is needed by SPGD, merely from a gray level distorted image and without any additional optics elements. Simulation results show the gray level variance function acts more promising than other metrics, such as metrics based on the gray level gradient of each pixel. The restoration capability of the AO system is investigated with different images and different turbulence strength wave-front aberrations using SPGD with the above resultant image quality criterion. Numerical simulation results verify the performance metric is effective and the AO system can restore those images degraded by different turbulence strengths successfully. (C) 2009 Optical Society of America
WOS标题词: Science & Technology ; Physical Sciences
类目[WOS]: Optics
研究领域[WOS]: Optics
关键词[WOS]: OPTIMIZATION
收录类别: SCI
语种: 英语
WOS记录号: WOS:000264090900005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/3260
Appears in Collections:光电技术研究所被WoS收录文章_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
2.Huaihai Inst Technol, Sch Elect Engn, Lianyungang 222005, Peoples R China

Recommended Citation:
Yang, Huizhen,Li, Xinyang,Gong, Chenglong,et al. Restoration of turbulence-degraded extended object using the stochastic parallel gradient descent algorithm: numerical simulation[J]. OPTICS EXPRESS,2009,17(5):3052-3062.
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