| 基于最大阈值的改进EZW图像压缩技术研究 |
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| 引用本文： | 李万社,张洪涛,房小蒙.基于最大阈值的改进EZW图像压缩技术研究[J].陕西理工学院学报(自然科学版),2014(1):27-31. |
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| 作者姓名： | 李万社 张洪涛 房小蒙 |
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| 作者单位： | 陕西师范大学数学与信息科学学院,陕西西安710062 |
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| 摘 要： | 研究了基于最大阈值的EZW图像压缩方法,从最大阈值角度出发改进了零树嵌入式编码EZW的算法,先判断重要子带,再进行带中操作,从而提高了工作效率。并结合传统EZW以及去高频图像压缩技术,进行MATLAB编程实验对比,结果表明:去高频图像压缩技术、传统EZW和改进后的EZW,这3种算法都能有效压缩图像,但是在三层小波分解下,改进的EZW算法明显优于其它两种算法。
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| 关 键 词： | 图像压缩 最大阈值 零树嵌入式算法 |
The improved EZW compression algorithm technology research based on maximum threshold |
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| LI Wan-she,ZHANG Hong-tao,FANG Xiao-meng.The improved EZW compression algorithm technology research based on maximum threshold[J].Journal of Shananxi University of Technology:Natural Science Edition,2014(1):27-31. |
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| Authors: | LI Wan-she ZHANG Hong-tao FANG Xiao-meng |
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| Institution: | (College of Mathematics and Information Science, Shaanxi Normal University, Xi＇ an 710062, China) |
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| Abstract: | Starting from the maximum threshold angle , we improve the zero-tree embedded coding EZW algorithm.We first determine the important sub-band, and then operate in the band , thus improving the work efficiency .In this paper , we mainly introduce the principle and implementation steps of the improved EZW . With the traditional EZW and the removing high-frequency of wavelet coefficients algorithm , we make a com-parison by using Matlab programming experiment .The results show that the removing high-frequency of wave-let coefficients algorithm , the traditional EZW and the improved EZW are all available in image compression , but the improved EZW has superior effect to the other two algorithms in 3 floor wavelet decomposition . |
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| Keywords: | image compression maximum threshold EZW |
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