An Improved EZW Algorithm and Its Application in Intelligent Transportation Systems

被引:0
|
作者
Wan, Genshun [1 ]
Song, Xuehua [1 ]
Bettati, Riccardo [2 ]
机构
[1] Jiangsu Univ, Dept Comp Sci & Telecommun Engn, Zhenjiang 212013, Jiangsu, Peoples R China
[2] Texas A&M Univ, Dept Comp Sci, College Stn, TX USA
关键词
intelligent transportation; image compression; Embedded Zerotree Wavelet (EZW);
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A large number of digital images are produced during the acquisition of video signals at signalized intersection in an intelligent transportation system. Because of limited storage space and transmission bandwidth, the signals must be compressed effectively to satisfy application requirements in real time. We propose an improved Embedded Zerotree Wavelet algorithm to improve the wavelet compression performance by adopting image pretreatment, introducing dynamic threshold and adding new symbols. The experimental results show that the proposed algorithm improves both the effectiveness of data compression and its efficiency and so is well suited for real-time image acquisition, storage and transmission at signalized intersections.
引用
收藏
页码:63 / 69
页数:7
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