| 基于小波变换的零树编码改进算法 |
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| 引用本文： | 冯岩,倪永军.基于小波变换的零树编码改进算法[J].信阳师范学院学报(自然科学版),2005,18(2):217-221. |
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| 作者姓名： | 冯岩 倪永军 |
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| 作者单位： | 信阳师范学院,计算机科学系,河南,信阳,464000 |
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| 摘 要： | 在讨论小波变换及EZW算法的基础上,分析了EZW算法的不足.通过对低频子带单独编码、在高频子带进行边缘检测、分类编码等措施的研究,提出了一种基于EZW算法的改进算法.实验结果表明:从峰值信噪比及编/解码时间对照,该算法优于EZW算法.
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| 关 键 词： | 小波变换 多分辨率分析 EZW 图像压缩 |
| 文章编号： | 1003-0972(2005)02-0217-05 |
The improved embedded zerotree coding algorithm based on wavelet transform |
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| FENG Yan,NI Yong-jun.The improved embedded zerotree coding algorithm based on wavelet transform[J].Journal of Xinyang Teachers College(Natural Science Edition),2005,18(2):217-221. |
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| Authors: | FENG Yan NI Yong-jun |
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| Abstract: | Based on discussing the wavelet transform and algorithm of EZW, the shortage of EZW is analyzed. Coding the subbands of low-scaled separating,testing the border of the subbands of high-scaled and the classified code are adopted. The experiment results show that the improved algorithm is superior to EZW by contrasting PSNR/db, the time of coding and decoding. |
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| Keywords: | wavelet transform multi-resolution embedded zerotree wavelet coding image compression |
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