| 一种基于小波变换的有序四叉树编码算法 |
| |
| 引用本文： | 冯岩.一种基于小波变换的有序四叉树编码算法[J].信阳师范学院学报(自然科学版),2006,19(2):236-238. |
| |
| 作者姓名： | 冯岩 |
| |
| 作者单位： | 信阳师范学院,计算机科学系,河南,信阳,464000 |
| |
| 基金项目： | 河南省自然科学基金项目(0511014400)，河南省教育厅项目(2004922075) |
| |
| 摘 要： | 在分析零树(EZW)编码算法的基础上,提出了一种改进算法.即对低频子带进行单独编码,在高频子带内通过定义有序四叉树,以优先传输重要小波系数,对量化的结果作行程编码.理论分析和实验研究表明,该算法的编解时间及图像恢复质量都优于EZW编码算法.
|
| 关 键 词： | 嵌入式零树编码 图像编码 有序四叉树 |
| 文章编号： | 1003-0972（2006）02-0236-03 |
| 收稿时间： | 2005-10-26 |
| 修稿时间： | 2005年10月26 |
An Ordered Quad-tree Algorithm Based on Wavelet Transform |
| |
| FENG Yan.An Ordered Quad-tree Algorithm Based on Wavelet Transform[J].Journal of Xinyang Teachers College(Natural Science Edition),2006,19(2):236-238. |
| |
| Authors: | FENG Yan |
| |
| Institution: | Department of Computer Science, Xinyang Normal University, Xinyang 464000, China |
| |
| Abstract: | An improved algorithm is presented based on discussing the algorithm of EZW.Namely the lowest frequency subband is encoded separately,the ordered quad-tree is defined in high frequency subbands so that the important wavelet coefficients are transmitted by priority,and the run-length is applied.Theoretical analysis and experimental results show that the scheme is better than the EZW in the aspects of encoding/decoding time and recovery image quality. |
| |
| Keywords: | EZW image coding ordered quad-tree |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
