Automated detection and tracking of solar magnetic bright points
Automated detection and tracking of solar magnetic bright points
复制标题
太阳磁亮点的自动检测和跟踪
DOI:
10.1111/j.1365-2966.2009.15083.x
复制
发表时间:
2009
影响因子:
4.8
通讯作者:
Crockett P
中科院分区:
文献类型:
--
作者:
Crockett P
Magnetic bright points (MBPs) in the internetwork are among the smallest objects in the solar photosphere and appear bright against the ambient environment. An algorithm is presented that can be used for the automated detection of the MBPs in the spatial and temporal domains. The algorithm works by mapping the lanes through intensity thresholding. A compass search, combined with a study of the intensity gradient across the detected objects, allows the disentanglement of MBPs from bright pixels within the granules. Object growing is implemented to account for any pixels that might have been removed when mapping the lanes. The images are stabilized by locating long-lived objects that may have been missed due to variable light levels and seeing quality. Tests of the algorithm, employing data taken with the Swedish Solar Telescope, reveal that ≈90 per cent of MBPs within a 75 × 75 arcsec2field of view are detected.
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影响因子:
2.8
作者:
R. Muller;T. Roudier
通讯作者:
R. Muller;T. Roudier
DOI:
10.1086/177291
发表时间:
1996
期刊:
The Astrophysical Journal
影响因子:
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作者:
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通讯作者:
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1973
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1994
期刊:
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作者:
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通讯作者:
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