Abstract
Coronal Mass Ejections (CMEs) release tremendous amounts of energy in the solar system, which has an impact on satellites, power facilities and wireless transmission. To effectively detect a CME in Large Angle Spectrometric Coronagraph (LASCO) C2 images, we propose a novel algorithm to locate the suspected CME regions, using the Extreme Learning Machine (ELM) method and taking into account the features of the grayscale and the texture. Furthermore, space–time continuity is used in the detection algorithm to exclude the false CME regions. The algorithm includes three steps: i) define the feature vector which contains textural and grayscale features of a running difference image; ii) design the detection algorithm based on the ELM method according to the feature vector; iii) improve the detection accuracy rate by using the decision rule of the space–time continuum. Experimental results show the efficiency and the superiority of the proposed algorithm in the detection of CMEs compared with other traditional methods. In addition, our algorithm is insensitive to most noise.
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Acknowledgements
This work was supported partly by the National Natural Science Foundation of China (Grant Nos. 61203341, 61375084, 61640218, 61472163, and 61673192), the Fund for Outstanding Youth of Shandong Provincial High School (Grant No. ZR2016JL023), the Project of Shandong Province Higher Educational Science and Technology Program (Grant No. J16LN07) and the Foundation of University of Jinan (Grant No. XKY1513). The first two authors contributed equally to this work. We thank the anonymous referee and the copy editor for their helpful comments on the draft of this paper.
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Zhang, L., Yin, Jq., Lin, Jb. et al. Detection of Coronal Mass Ejections Using Multiple Features and Space–Time Continuity. Sol Phys 292, 91 (2017). https://doi.org/10.1007/s11207-017-1107-2
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DOI: https://doi.org/10.1007/s11207-017-1107-2