[1]高西奇,甘露,邹采荣.多小波变换零树图像编码方法研究[J].东南大学学报(自然科学版),2000,30(2):32-37.[doi:10.3969/j.issn.1001-0505.2000.02.007]
 Gao Xiqi,Gan Lu,Zou Cairong.Study of Multiwavelet Zerotree Image Coding[J].Journal of Southeast University (Natural Science Edition),2000,30(2):32-37.[doi:10.3969/j.issn.1001-0505.2000.02.007]
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多小波变换零树图像编码方法研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
30
期数:
2000年第2期
页码:
32-37
栏目:
信息与通信工程
出版日期:
2000-03-19

文章信息/Info

Title:
Study of Multiwavelet Zerotree Image Coding
作者:
高西奇 甘露 邹采荣
东南大学无线电工程系, 南京 210096
Author(s):
Gao Xiqi Gan Lu Zou Cairong
Department of Radio Engineering, Southeast University, Nanjing 210096
关键词:
多小波变换 图像编码 零树 矢量量化
Keywords:
multiwavelet image coding zerotree vector quantization
分类号:
TN911.7
DOI:
10.3969/j.issn.1001-0505.2000.02.007
摘要:
研究多小波变换零树图像编码的性能.在标量零树方面,通过对图像多小波系数的重新排列,提出了新的多小波系数树的定义,并由实验证明它比直接采用单小波零树的组织更为有效; 在矢量零树方面,根据多小波变换处理的是矢量信号这一特点,提出了矢量四叉树的数据结构,并从最优率失真意义上设计了矢量量化的多小波零树编码方案,结果表明,在该方案下,多小波比优选的9-7单小波具有更好的压缩性能.
Abstract:
We investigate the performance of multiwavelet zerotree image coding. By rearranging the multiwavelet coefficients, a scalar zerotree coding algorithm can achieve better performance than the reported methods, which has been verified by experimental results. Furthermore, we propose a new vector quadtree structure and the corresponding optimal vector zerotree coding scheme in rate-distortion sense. This scheme can match the feature of mutiwavelet transform efficiently. By using this scheme, the coding efficiency of multiwavelet outperforms that of the 9-7 scalar-wavelet.

参考文献/References:

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相似文献/References:

[1]高西奇,连乃祥,邹采荣,等.基于格型矢量量化的小波零树图像编码方法[J].东南大学学报(自然科学版),1999,29(5):41.[doi:10.3969/j.issn.1001-0505.1999.05.008]
 Gao Xiqi,Lian Naixiang,Zou Cairong,et al.Wavelet Zerotree Image Coding Based on Lattice Vector Quantization[J].Journal of Southeast University (Natural Science Edition),1999,29(2):41.[doi:10.3969/j.issn.1001-0505.1999.05.008]
[2]蒋晓红,王曙光.一种适合于多分辨率静止图像的编码方法[J].东南大学学报(自然科学版),1996,26(3):35.[doi:10.3969/j.issn.1001-0505.1996.03.008]
 Jiang Xiaohong,Wang Shuguang.A New Code Scheme of Multiresolution Still Image[J].Journal of Southeast University (Natural Science Edition),1996,26(2):35.[doi:10.3969/j.issn.1001-0505.1996.03.008]

备注/Memo

备注/Memo:
基金项目:国家自然科学基金(69702007)和江苏省自然科学基金(BK97010)资助课题.
第一作者:男, 1967年生, 博士,副教授.
更新日期/Last Update: 2000-03-20