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| 基于等值线分类的区域填充算法 | |
| 引用本文： | 刘冬韡,戴建华,林红,贺千山.基于等值线分类的区域填充算法[J].气象科技,2009,37(5):597-600. |
| 作者姓名： | 刘冬韡 戴建华 林红 贺千山 |
| 作者单位： | 1. 北京大学物理学院,北京,100871;上海市卫星遥感与测量应用中心,上海,201100 2. 上海市中心气象台,上海,200030 3. 上海市卫星遥感与测量应用中心,上海,201100 |
| 基金项目： | 国家自然科学基金项目“卫星遥感中国东部沿海气溶胶光学厚度”(40705013);;国家科技部世博专项(2005BA908B15);;上海市科委世博专项“世博会强对流天气动态预警技术研究课题”(05DZ05815)资助 |
| 摘 要： | 提出了一种等值线区域填充算法。该算法根据等值线和边界的关系,将等值线分类、排序,构造等值线填充区域。通过查找子等值线确定等值线填充区域的拓扑关系,还对不同的颜色选择方式进行了探讨,分析其各自优缺点后认为引入格点数据进行颜色选择是必要的。该算法可以在规则边界条件下实现等值线快速填充,并在上海市气象局短时/临近预报预警系统（NoCAWS）中应用,效果良好。 |
| 关 键 词： | 等值线 区域填充 等值线分类 子等值线 |
| 收稿时间： | 9/9/2008 12:00:00 AM |
| 修稿时间： | 1/6/2009 12:00:00 AM |
Algorithm of Area Filling Based on Isoline Classification |
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| Liu Dongwei,Dai Jianhu,Lin Hong and He Qianshan.Algorithm of Area Filling Based on Isoline Classification[J].Meteorological Science and Technology,2009,37(5):597-600. | |
| Authors: | Liu Dongwei Dai Jianhu Lin Hong and He Qianshan |
| Institution: | 1 Physics School of Perking University;Beijing 100871;2 Shanghai Center for Satellite Remote-Sensing and Application;Shanghai 201100;3 Shanghai Meteorological Center;Shanghai 200030 |
| Abstract: | An algorithm of area filling based on isoline classification is presented.Based on the relationship between isolines and borderlines,isolines are classified and ranked,and the isoline areas are constructed.The isoline area topology is built by searching the subisolines.The advantages and disadvantages of different ways of color filling are also discussed,and the analysis concludes that it is necessary to use grid data to choose color.This algorithm can be used to fill the areas between regular isolines for ... |
| Keywords: | isoline areas filled isoline classification sub-isoline |
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