Computer Science ›› 2015, Vol. 42 ›› Issue (5): 67-71.doi: 10.11896/j.issn.1002-137X.2015.05.014

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Study of Positioning Tropical Cyclone Center Based on Ellipse Fitting

LIU Nian-qing, ZHANG Wen-sheng and LI Lin   

  • Online:2018-11-14 Published:2018-11-14

Abstract: Positioning tropical cyclone (TC) center is the basis of TC forecasting.A novel ellipse model was presented instead of existing spiral ones to locate TC center objectively and automatically.The model includes diffusion of oriented gradient,ellipse segments selection,ellipse clustering and center point decision.Experimental results show that the modelbased on infrared satellite cloud images can achieve the best average error of less 0.12 on both latitude and longitude in comparison with the best track data from the China Meteorological Administration,providing objective and accurate information for locating TC centers.

Key words: Tropical cyclone,Center positioning,Infrared satellite image,Data mining,Ellipse fitting

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