计算机科学 ›› 2015, Vol. 42 ›› Issue (5): 47-50.doi: 10.11896/j.issn.1002-137X.2015.05.009
田红梅,彭 博,李天瑞,谢宗霞
TIAN Hong-mei, PENG Bo, LI Tian-rui and XIE Zong-xia
摘要： 日冕物质抛射(CME)是空间灾害天气的重要驱动源,而日冕暗化(dimming)被认为是CME初发的主要表征,对理解和预测CME具有重要作用。基于极紫外成像望远镜(EIT)和大气成像仪(AIA)的观测数据,实现了图像中日冕暗化现象的检测与提取。通过分析差分图中与暗化现象相关的图像统计特征,采用Adaboost分类算法检测暗化现象的发生,进而分割出日冕暗化区域。实验表明,提出的算法较现有算法能更准确有效地检测和提取日冕暗化区域,为分析日冕暗化特性提供了研究基础。
| [1] Harrison R A,Lyons M.A spectroscopic study of coronal dimming associated with a coronal mass ejection[J].Astronomy and Astrophysics,2000(358):1097-1108 [2] Hudson H S,Lemen J R,Webb D F.Coronal X-Ray Dimming in Two Limb Flares[C]∥Proceedings of a Yohkoh Conference.1996:379-382 [3] Gopalswamy N,Hanaoka Y,Hudson H S.Structure and dynami-cs of the corona surrounding an eruptive prominence[J].Advances in Space Research,2000,25(9):1851-1854 [4] Hudson H S,Lemen J R,Cyr O C S,et al.X-ray coronal changes during halo CMEs[J].Geophysical Research Letters,1998,14(25):2481-2484 [5] Delaboudinière J P,Artzner G E,Brunaud J,et al.EIT:Ex-treme-ultraviolet Imaging Telescope for the SOHO mission[J].Solar Physics,1995,162(1/2):291-312 [6] Podladchikova O,Berghmans D.Automated Detection of EitWaves And Dimmings[J].Solar Physics,2005,228(1/2):265-284 [7] Attrill G D R,Wills-Davey M J.Automatic Detection and Extraction of Coronal Dimmings from SDO/AIA Data[J].Solar Physics,2010,262(2):461-480 [8] Attrill G,Nakwacki M S,Harra L K,et al.Using the Evolution of Coronal Dimming Regions to Probe the Global Magnetic Field Topology[J].Solar Physics,2006,238(1):117-139 [9] Reinard A A,Biesecker D A.Coronal Mass Ejection-AssociatedCoronal Dimmings[J].The Astrophysical Journal,2008,674(1):576 [10] Krista L D,Reinard A.Study of the Recurring Dimming Region Detected at AR 11305 Using the Coronal Dimming Tracker (CoDiT) [J].The Astrophysical Journal,2013,762(2):91 [11] Ayinala M,Parhi K K.Low complexity algorithm for seizureprediction using Adaboost[C]∥Proceedings of the Engineering in Medicine and Biology Society (EMBC).San Diego,2012:1061-1064 [12] Cao J,Kwong S,Wang R.A noise-detection based AdaBoost algorithm for mislabeled data[J].Pattern Recognition,2012,45(12):4451-4465 [13] Lan R S,Jiang Y,Ding L G,et al.Automated flare predictionusing the AdaBoost algorithm[J].Research in Astronomy and Astrophysics,2012,12(9):1191-1196 [14] Freeland S L,Handy B N.Data Analysis with the SolarSoft System[J].Solar Physics,1998,182(2):497-500 [15] Grady L.Multilabel random walker image segmentation using prior models[C]∥Proceedings of the IEEE Computer Society Conference on Computer Vision and Pattern Recognition.Volume 1,San Diego,2005:763-770 |
| No related articles found! |
|
||
首页