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山东大学学报(工学版) ›› 2018, Vol. 48 ›› Issue (2): 8-13.doi: 10.6040/j.issn.1672-3961.0.2017.311

• 机器学习与数据挖掘 • 上一篇    下一篇

基于GEL的机场噪声等值线并行生成算法

冯霞1,2,黄熙祥1*   

  1. 1. 中国民航大学计算机科学与技术学院, 天津 300300;2. 中国民航信息技术科研基地, 天津 300300
  • 收稿日期:2017-06-20 出版日期:2018-04-20 发布日期:2017-06-20
  • 通讯作者: 黄熙祥(1993— ),男,山西临汾人,硕士研究生,主要研究方向为民航智能信息处理,数据挖掘.E-mail:13212108305@163.com E-mail:xfeng@cauc.edu.cn
  • 作者简介:冯霞(1970— ),女,山西吕梁人,教授,博士,主要研究方向为民航智能信息处理,数据挖掘.E-mail:xfeng@cauc.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(61139002);国家科技支撑计划资助项目(2014BAJ04B02);民航科技基金资助项目(MHRD201101)

Airport noise isoline parallel generating algorithm based on grid edge labeling

FENG Xia1,2, HUANG Xixiang1*   

  1. 1. College of Computer Science and Technology, Civil Aviation University of China, Tianjin 300300, China;
    2. Information Technology Research Base, Civil Aviation Administration of China, Tianjin 300300, China
  • Received:2017-06-20 Online:2018-04-20 Published:2017-06-20

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摘要： 针对机场噪声等值线实时动态展现过程中存在的计算量大、绘制效率低等问题,提出一种基于网格边标记(grid edge labeling, GEL)的等值线并行生成算法。该并行生成算法采用局部到全局的等值线生成策略,以行为单位将网格任务划分,利用GEL算法确定单个网格内等值线的走向,对网格遍历一次即可生成全部噪声等值线。试验结果表明:当网格为400×400个,噪声为15层时,达到17帧/s的绘制效果,本研究算法较其他算法可更好的满足噪声动态可视化的需求。

关键词: 并行生成, 网格边标记, 高程值过滤, 噪声等值线, 等值线绘制, 机场噪声

Abstract: To solve the problem of large computation and low efficiency in real time dynamic presentation of the airport noise isoline, a kind of isoline parallel generating algorithm based on grid edge labeling was proposed. The parallel generating algorithm adopted the isoline generation strategy from local to global; the grid tasks were assigned by rows; the orientation of the isoline in one grid was setted by grid edge labeling algorithm; all the noise isoline were generated by traversing all the grids only once. The results showed that the algorithm could reach 17 frame/s when the scale of gird was 400×400 and the number of noise levels was 15, which could better satisfy the demand for dynamic noise visualization compared with other algorithms.

Key words: airport noise, grid edge labeling, isoline drawing, noise isoline, parallel generation, elevation filtering

中图分类号: 

  • TP391
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