QQ客服 官方微博 反馈留言

	The speckle image reconstruction of the solar small scale features
	Zhong, Libo1,2,3; Tian, Yu1,2; Rao, Changhui1,2
	2014
会议名称	Proceedings of SPIE: International Symposium on Optoelectronic Technology and Application 2014: Image Processing and Pattern Recognition
会议日期	2014
卷号	9301
页码	93012X
中文摘要	The resolution of the astronomical object observed by the earth-based telescope is limited due to the atmospheric turbulence. Speckle image reconstruction method provides access to detect small-scale solar features near the diffraction limit of the telescope. This paper describes the implementation of the reconstruction of images obtained by the 1-m new vacuum solar telescope at Full-Shine solar observatory. Speckle masking method is used to reconstruct the Fourier phases for its better dynamic range and resolution capabilities. Except of the phase reconstruction process, several problems encounter in the solar image reconstruction are discussed. The details of the implement including the flat-field, image segmentation, Fried parameter estimation and noise filter estimating are described particularly. It is demonstrated that the speckle image reconstruction is effective to restore the wide field of view images. The qualities of the restorations are evaluated by the contrast ratio. When the Fried parameter is 10cm, the contrast ratio of the sunspot and granulation can be improved from 0.3916 to 0.6845 and from 0.0248 to 0.0756 respectively. © 2014 SPIE.
英文摘要	The resolution of the astronomical object observed by the earth-based telescope is limited due to the atmospheric turbulence. Speckle image reconstruction method provides access to detect small-scale solar features near the diffraction limit of the telescope. This paper describes the implementation of the reconstruction of images obtained by the 1-m new vacuum solar telescope at Full-Shine solar observatory. Speckle masking method is used to reconstruct the Fourier phases for its better dynamic range and resolution capabilities. Except of the phase reconstruction process, several problems encounter in the solar image reconstruction are discussed. The details of the implement including the flat-field, image segmentation, Fried parameter estimation and noise filter estimating are described particularly. It is demonstrated that the speckle image reconstruction is effective to restore the wide field of view images. The qualities of the restorations are evaluated by the contrast ratio. When the Fried parameter is 10cm, the contrast ratio of the sunspot and granulation can be improved from 0.3916 to 0.6845 and from 0.0248 to 0.0756 respectively. © 2014 SPIE.
收录类别	EI
学科主题	Atmospheric thermodynamics - Atmospheric turbulence - Diffraction - Earth (planet) - Image processing - Image segmentation - Pattern recognition - Plastic deformation - Restoration - Speckle - Telescopes
语种	英语
ISSN号	0277786X
内容类型	会议论文
源URL	[http://ir.ioe.ac.cn/handle/181551/7820]
专题	光电技术研究所_自适应光学技术研究室（八室）
作者单位	1.Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu, China 2.Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, China 3.University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Zhong, Libo,Tian, Yu,Rao, Changhui. The speckle image reconstruction of the solar small scale features[C]. 见:Proceedings of SPIE: International Symposium on Optoelectronic Technology and Application 2014: Image Processing and Pattern Recognition. 2014.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。