Identification of Sunspots on SODISM Full-Disk Solar Images

Alasta, Amro F.
Algamudi, Abdrazag
Qahwaji, Rami S.R.
Almesrati, Fatma

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Publication date

January 2018

DOI

10.1109/iCCECOME.2018.8658432

Publisher

Institute of Electrical and Electronics Engineers (IEEE)

Abstract

yesThis paper presents a new method that provides the means to detect sunspots on full-disk solar images recorded by the Solar Diameter Imager and Surface Mapper (SODISM) on the PICARD satellite. The method is a totally automated detection process that achieves a sunspot recognition rate of 97.6%. The number of sunspots detected by this method strongly agrees with the NOAA catalogue. The sunspot areas calculated by this method have a 99% correlation with SOHO over the same period, and thus help to calculate the filling factor for wavelength (W.L.) 607nm