Automated Boundary-extraction And Region-growing Techniques Applied To Solar Magnetograms

Automated Boundary-extraction And Region-growing Techniques Applied To Solar Magnetograms

We present an automated approach to active region extraction from full-disc MDI longitudinal magnetograms. This uses a region-growing technique in conjunction with boundary-extraction to define a number of enclosed contours as belonging to separate regions of magnetic significance on the solar disc....

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Veröffentlicht in:Solar physics 2005-05, Vol.228 (1-2), p.55-66
Hauptverfasser: McAteer, RTJames, Gallagher, Peter T, Ireland, Jack, Young, CAlex
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Automation
Magnetism
Solar physics
Studies
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container_title Solar physics
container_volume 228
creator McAteer, RTJames
Gallagher, Peter T
Ireland, Jack
Young, CAlex
description We present an automated approach to active region extraction from full-disc MDI longitudinal magnetograms. This uses a region-growing technique in conjunction with boundary-extraction to define a number of enclosed contours as belonging to separate regions of magnetic significance on the solar disc. This provides an objective definition of active regions and areas of plage on the Sun. A number of parameters relating to the flare potential of each region are discussed.
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subjects Automation
Magnetism
Solar physics
Studies
title Automated Boundary-extraction And Region-growing Techniques Applied To Solar Magnetograms
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