[1]吴家皋,刘敏,韦光,等. 一种改进的滑动窗口轨迹数据压缩算法[J].计算机技术与发展,2015,25(12):47-51.
　WU Jia-gao,LIU Min,WEI Guang,et al. An Improved Trajectory Data Compression Algorithm of Sliding Window[J].,2015,25(12):47-51.
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 一种改进的滑动窗口轨迹数据压缩算法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
25
期数:
2015年12期
页码:
47-51
栏目:
智能、算法、系统工程
出版日期:
2015-12-10

文章信息/Info

Title:
 An Improved Trajectory Data Compression Algorithm of Sliding Window
文章编号:
1673-629X（2015)12-0047-05
作者:
 吴家皋; 刘敏; 韦光; 刘林峰
 南京邮电大学 计算机学院；江苏省无线传感网高技术研究重点实验室
Author(s):
 WU Jia-gao; LIU Min; WEI Guang; LIU Lin-feng
关键词:
 ; 全球卫星定位系统; 轨迹压缩; 滑动窗口; 压缩率
Keywords:
 ; GPS; trajectory compression; sliding window; compression ratio
分类号:
TP301.6
文献标志码:
A
摘要:
 移动对象的轨迹信息具有重要的理论和应用价值. 为减少轨迹数据存储空间,提高数据分析及传送速度,提出了一种改进的滑动窗口轨迹数据压缩算法. 在该算法中,将最大偏移距离参考轨迹点作为当前待压缩的轨迹点能否被压缩的判据,以降低轨迹的压缩时间、提高压缩效率. 实验测试结果表明,较现有的滑动窗口轨迹数据压缩算法,改进的滑动窗口轨迹数据压缩算法在压缩时间上显著减少,在压缩率上也有所提高,并且在常用的轨迹压缩阈值范围内,两种算法压缩后得到的轨迹集的相似度很高.
Abstract:
 Moving object trajectory information has important theoretical and practical value. To reduce the track data storage space and improve analysis and transmission speed,an improved sliding window track data compression algorithm is proposed,in which whether the current trajectory point can be compressed is based on the maximum offset distance between the reference point,to reduce the compression time and improve the compression efficiency. Experimental results show that compared with the existing track sliding window data com-pression algorithm,the improved algorithm has advantages on a compressed time significantly,and slightly increases the compression rati-o,moreover within a certain trajectory compression threshold,the two algorithms have high similarity of compressed trajectories set.

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更新日期/Last Update: 2016-01-28