Extracting Filaments Based on Morphology Components Analysis from Radio Astronomical Images
Joint Authors
Duan, Fu-qing
Zhu, M.
Liu, W.
Wang, B. Y.
Zhang, M. F.
Tian, W. W.
Yu, X. C.
Liang, T. H.
Wu, D.
Hu, D.
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-02
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Filaments are a type of wide-existing astronomical structure.
It is a challenge to separate filaments from radio astronomical images, because their radiation is usually weak.
What is more, filaments often mix with bright objects, e.g., stars, which makes it difficult to separate them.
In order to extract filaments, A.
Men’shchikov proposed a method “getfilaments” to find filaments automatically.
However, the algorithm removed tiny structures by counting connected pixels number simply.
Removing tiny structures based on local information might remove some part of the filaments because filaments in radio astronomical image are usually weak.
In order to solve this problem, we applied morphology components analysis (MCA) to process each singe spatial scale image and proposed a filaments extraction algorithm based on MCA.
MCA uses a dictionary whose elements can be wavelet translation function, curvelet translation function, or ridgelet translation function to decompose images.
Different selection of elements in the dictionary can get different morphology components of the spatial scale image.
By using MCA, we can get line structure, gauss sources, and other structures in spatial scale images and exclude the components that are not related to filaments.
Experimental results showed that our proposed method based on MCA is effective in extracting filaments from real radio astronomical images, and images processed by our method have higher peak signal-to-noise ratio (PSNR).
American Psychological Association (APA)
Zhu, M.& Liu, W.& Wang, B. Y.& Zhang, M. F.& Tian, W. W.& Yu, X. C.…[et al.]. 2019. Extracting Filaments Based on Morphology Components Analysis from Radio Astronomical Images. Advances in Astronomy،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1114362
Modern Language Association (MLA)
Zhu, M.…[et al.]. Extracting Filaments Based on Morphology Components Analysis from Radio Astronomical Images. Advances in Astronomy No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1114362
American Medical Association (AMA)
Zhu, M.& Liu, W.& Wang, B. Y.& Zhang, M. F.& Tian, W. W.& Yu, X. C.…[et al.]. Extracting Filaments Based on Morphology Components Analysis from Radio Astronomical Images. Advances in Astronomy. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1114362
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1114362