| 一种新的在图像压缩中的适度分层阈值法 |
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| 引用本文： | 葛善虎,丁宣浩.一种新的在图像压缩中的适度分层阈值法[J].广西科学院学报,2006,22(4):352-354,357. |
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| 作者姓名： | 葛善虎 丁宣浩 |
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| 作者单位： | 桂林电子工业学院计算科学与数学系,广西桂林,541004 |
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| 摘 要： | 从图像本身的统计特性出发,利用小波包对图像进行多层分解,提出适度分层阈值法,并将适度分层阈值法与分层阈值法对相同的图像进行对比实验.结果是,适度分层阈值法有效克服了DCT在图像压缩中存在的"方块效应",并且比分层阈值法对图像进行压缩更能达到较好的压缩效果.
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| 关 键 词： | 小波变换 适度分层阈值法 图像编码 图像压缩 |
| 文章编号： | 1002-7378（2006）04-0352-03 |
| 收稿时间： | 2006-07-31 |
| 修稿时间： | 2006-07-31 |
A Hierarchical Threshold Value Method in Image Compression |
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| GE Shan-hu and DING Xuan-hao.A Hierarchical Threshold Value Method in Image Compression[J].Journal of Guangxi Academy of Sciences,2006,22(4):352-354,357. |
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| Authors: | GE Shan-hu and DING Xuan-hao |
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| Institution: | Department of Computing Science and Mathematics, Guilin, Guangxi, 541004, China |
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| Abstract: | In terms of statistic characteristics of an image,a wavelet package is used in the multilayer decomposition of image compression,and that brings up a moderate-hierarchical threshold value method. It is compared with the hierarchical threshold method. The result shows that this method not only overcomes DCT shortcomings of square-piece effect in image compression,but also has more compression effect than the hierarchical threshold method. |
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| Keywords: | wavelet transform moderate-hierarchical threshold value method image coding image compression |
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