CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10701 > Article
Paper
9 July 2018 Image enhancement for the observation of the solar corona
M.Y. Zhao, Y. Liu, T.F. Song, X.F. Zhang, M. Hagino, T. Sakurai
Author Affiliations +
Proceedings Volume 10701, Optical and Infrared Interferometry and Imaging VI; 1070129 (2018) https://doi.org/10.1117/12.2312347
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States
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.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
M.Y. Zhao, Y. Liu, T.F. Song, X.F. Zhang, M. Hagino, and T. Sakurai "Image enhancement for the observation of the solar corona", Proc. SPIE 10701, Optical and Infrared Interferometry and Imaging VI, 1070129 (9 July 2018); https://doi.org/10.1117/12.2312347
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 8 PAGES
DOWNLOAD PAPER SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Image enhancement
Coronagraphy
Observatories
Image processing
Solar processes
Sun
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top