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Image enhancement for the observation of the solar corona
Zhao MY(赵明宇)1; Liu Y(刘煜)1; Song TF(宋腾飞)1; Zhang XF(张雪飞)1; Hagino, M.2; Sakurai, T.2
会议录名称Proceedings of SPIE - OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING VI
2018
卷号10701
DOI10.1117/12.2312347
会议录编者/会议主办者CreechEakman, MJ; Tuthill, PG; Merand, A
产权排序第1完成单位
收录类别EI ; CPCI
会议名称Conference on Optical and Infrared Interferometry and Imaging VI
会议日期2018-06-11
会议地点Austin, TX
会议赞助商SPIE; 4D Technol; Andor Technol Ltd; Astron Consultants & Equipment, Inc; Giant Magellan Telescope; GPixel, Inc; Harris Corp; Mater Corp; Optimax Syst, Inc; Princeton Infrared Technologies; Symetrie; Teledyne Technologies, Inc; Thirty Meter Telescope
关键词Sun: Corona Techniques: Image Processing
摘要

In this work, we introduce an image enhancement method ideally suited for the visualization of coronal intensity images. The steep radial gradient of the coronal brightness is adjusted by normalising the coronal image with the Fourier approximation of its local average. A method based on deconvolution and localised normalising of the data at many different spatial scales is used to further enhance the fine structures, and a wavelet shrinkage denoising method is used for noise suppression. The effectiveness of this method is demonstrated on a series of images observed by various instruments including spacial and earth-based coronagraphs as well as photos during total solar eclipse. This method is very helpful for qualitative analysis of solar coronal structures that are mostly invisible on original images.

资助项目NSFC[11533009] ; NSFC[11533009] ; NSFC[11533009] ; National Science Foundation
项目资助者NSFC ; National Science Foundation
语种英语
学科领域天文学 ; 天体物理学 ; 实测天体物理学 ; 太阳与太阳系
学科门类理学 ; 理学::天文学
文章类型Proceedings Paper
出版者SPIE-INT SOC OPTICAL ENGINEERING
出版地1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
ISBN号978-1-5106-1956-2
ISSN号0277-786X
URL查看原文
WOS记录号WOS:000452671900067
WOS研究方向Optics ; Imaging Science & Photographic Technology
WOS类目Optics ; Imaging Science & Photographic Technology
EI入藏号20183705793105
EI主题词Image Enhancement
EI分类号723.2data Processing And Image Processing - 941.4optical Variables Measurements
引用统计
文献类型会议论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/18429
专题选址与日冕观测组
通讯作者Zhao MY(赵明宇)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, JAPAN
推荐引用方式
GB/T 7714
Zhao MY,Liu Y,Song TF,et al. Image enhancement for the observation of the solar corona[C]//CreechEakman, MJ; Tuthill, PG; Merand, A. 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA:SPIE-INT SOC OPTICAL ENGINEERING,2018.
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