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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
Source PublicationProceedings of SPIE - OPTICAL AND INFRARED INTERFEROMETRY AND IMAGING VI
2018
Volume10701
DOI10.1117/12.2312347
Author of SourceCreechEakman, MJ; Tuthill, PG; Merand, A
Contribution Rank第1完成单位
Indexed ByEI ; CPCI
Conference NameConference on Optical and Infrared Interferometry and Imaging VI
Conference Date2018-06-11
Conference PlaceAustin, TX
Conference SponsorSPIE; 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
KeywordSun: Corona Techniques: Image Processing
Abstract

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.

Funding ProjectNSFC[11533009] ; NSFC[11533009] ; NSFC[11533009] ; National Science Foundation
Funding OrganizationNSFC ; National Science Foundation
Language英语
Subject Area天文学 ; 天体物理学 ; 实测天体物理学 ; 太阳与太阳系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeProceedings Paper
PublisherSPIE-INT SOC OPTICAL ENGINEERING
Publication Place1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
ISBN978-1-5106-1956-2
ISSN0277-786X
URL查看原文
WOS IDWOS:000452671900067
WOS Research AreaOptics ; Imaging Science & Photographic Technology
WOS SubjectOptics ; Imaging Science & Photographic Technology
EI Accession Number20183705793105
EI KeywordsImage Enhancement
EI Classification Number723.2data Processing And Image Processing - 941.4optical Variables Measurements
Citation statistics
Document Type会议论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/18429
Collection选址与日冕观测组
Corresponding AuthorZhao MY(赵明宇)
Affiliation1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.National Astronomical Observatory of Japan, Osawa, Mitaka, Tokyo 181-8588, JAPAN
Recommended Citation
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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