该文采用图像处理方法提取气象传真图中等位势高度线、等位势涡度线、锋线等信息,以便于分析及与其他信息的融合。提出一种新的基于多区域特征点(块)配对的交叉线识别方法提取交叉的等位势高度线,提出新的向量积算法识别等位势涡度线中的虚线段,综合多种三角形提取方法提取锋线上的三角形。实验结果表明,这些方法能够有效地识别出气象传真图中等位势高度线、等位势涡度线、锋线。

In this paper we describe the use of image processing methods to extract important information from meteorological facsimile maps for analysis and integration with other information. We propose a method based on matching feature points to judge intersecting lines. Furthermore,we propose a method based on vector products to recognize dotted line segments on vorticity lines,and we combine these methods to extract triangles on frontal lines. Experiments show that these methods work effectively.