Automatic Detection and Classification of Coronal Mass Ejections

Details Automatic Detection and Classification of Coronal Mass Ejections Automatic Detection and Classification of Coronal Mass Ejections

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006soph..237..419q&link_type=abstract

Solar Physics, Volume 237, Issue 2, pp.419-431

Physics

10

Scientific paper

We present an automatic algorithm to detect, characterize, and classify coronal mass ejections (CMEs) in Large Angle Spectrometric Coronagraph (LASCO) C2 and C3 images. The algorithm includes three steps: (1) production running difference images of LASCO C2 and C3; (2) characterization of properties of CMEs such as intensity, height, angular width of span, and speed, and (3) classification of strong, median, and weak CMEs on the basis of CME characterization. In this work, image enhancement, segmentation, and morphological methods are used to detect and characterize CME regions. In addition, Support Vector Machine (SVM) classifiers are incorporated with the CME properties to distinguish strong CMEs from other weak CMEs. The real-time CME detection and classification results are recorded in a database to be available to the public. Comparing the two available CME catalogs, SOHO/LASCO and CACTus CME catalogs, we have achieved accurate and fast detection of strong CMEs and most of weak CMEs.

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