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Research on boundary extraction and fitting analysis for convective clouds based on rerouting strategy

机译:基于重新排教策略的对流云边界提取和拟合分析研究

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The method of boundary extraction of convective clouds was theoretically studied on the basis of image processing and model fitting evaluation theory, with the help of Doppler weather radar echoes. Ellipse and convex polygon was used to fit the extracted boundary of those clouds whose areas are big enough for flights to reroute. The evaluation results show that polygon fitting method is better than ellipse. And the accuracy gradually decreases with the increasing of length-width ratio of clouds. On the contrary, the redundancy gradually increases. In ellipse fitting method, the deviation degree also increases when the length-width ratio increases, while, the value is constant in the method of polygon fitting.
机译:在多普勒天气雷达回声的帮助下理论上研究了对流云的边界提取方法。椭圆和凸多边形用于适应那些区域足够大的云的提取边界,足以飞往Reroute。评估结果表明,多边形拟合方法优于椭圆形。随着云长度比的增加,精度逐渐降低。相反,冗余逐渐增加。在椭圆拟合方法中,当长度宽比增加时,偏差也会增加,而该值在多边形配件的方法中是恒定的。

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