| 改进的嵌入式小波零树编码算法 |
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| 引用本文： | 刘福恒,伊秀,匡桂娟.改进的嵌入式小波零树编码算法[J].计算机工程与设计,2008,29(5):1215-1217. |
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| 作者姓名： | 刘福恒 伊秀 匡桂娟 |
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| 作者单位： | 1. 莱阳农学院,信息科学与工程学院,山东,青岛,266109
2. 山东省质量技术监督干部学校,山东,济南,250014 |
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| 摘 要： | EZW静态图像压缩算法,由于充分利用了小波变换图像的良好性质,引起了图像数据压缩领域的广泛注意.EZW算法被认为是静态图像变换编码领域迄今为止最好的算法之一.通过对EZW算法及其改进算法的介绍,分析了这些算法存在的不足,并提出一种简单而有效的静态图像压缩算法,根据图像经小波分解后系数的特点和人眼视觉特性对Shapiro的EZW算法进行改进.由于人眼对图像的边缘信息的丢失非常敏感,改进后的算法更加注重边缘信息的编码,实验结果表明,重构后的图像更加清晰,尤其在低比特率时更加明显.
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| 关 键 词： | 嵌入零树小波编码 图像压缩 零树 小波变换 改进的零树编码算法 |
| 文章编号： | 1000-7024(2008)05-1215-03 |
| 修稿时间： | 2007年4月10日 |
Enhanced image coding algorithm based on embedded zerotree wavelet |
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| LIU Fu-heng,YI Xiu,KUANG Gui-juan.Enhanced image coding algorithm based on embedded zerotree wavelet[J].Computer Engineering and Design,2008,29(5):1215-1217. |
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| Authors: | LIU Fu-heng YI Xiu KUANG Gui-juan |
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| Affiliation: | LIU Fu-heng1,YI Xiu2,KUANG Gui-juan1(1.College of Information Science , Engineering,Laiyang Agriculture University,Qingdao 266109,China,2.Sh,ong Cadre School of Quality Technology , Supervision,Jinan 250014,China) |
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| Abstract: | EZW approach is a competitive technique for performance as compared with other coding techniques as it makes use of the ex-cellent characteristic of wavelet transform.Firstly,the embedded zerotree wavelet algorithm(EZW) and its improved methods are in-troduced and then their deficiency is discussed.A simple,yet effective still image compression algorithm is described.According to the characteristic of coefficients and human visual system(HVS),an attempt is made to improve Shapiro's EZW algorithm.The enhance... |
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| Keywords: | embedded zerotree wavelet coding image compression zerotree wavelet transform improved zerotree based algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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