Research on medical image hybrid coding based on DPCM and EZW algorithm

doi:10.3778/j.issn.1002-8331.2010.31.068

Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (31): 243-245.DOI: 10.3778/j.issn.1002-8331.2010.31.068

• 工程与应用 • Previous Articles Next Articles

Research on medical image hybrid coding based on DPCM and EZW algorithm

ZHAI Guo¹，SONG Yu-qing¹，TAN Jia-ning¹，XU Qing²

1.Department of Computer Science and Telecommunication Engineering，Jiangsu University，Zhenjiang，Jiangsu 212013，China
2.School of Electromechanical Engineering，Xidian University，Xi’an 710071，China

Received:2008-09-03 Revised:2008-11-19 Online:2010-11-01 Published:2010-11-01
Contact: ZHAI Guo

DPCM与EZW混合编码在医学图像中的应用研究

翟国¹，宋余庆¹，谈佳宁¹，徐庆²

1.江苏大学计算机科学与通信工程学院，江苏镇江 212013
2.西安电子科技大学机电工程学院，西安 710071

通讯作者: 翟国

Abstract

Abstract: A great deal of medical images have been created by modern medical treatments.How to store，query and transmit these medical images have become a urgent problem.In this paper，the research on medical images based on integer to integer wavelet transform and embedded zero tree encoding is proposed.DPCM codes respectively the low-frequency sub-band（LL） of Wavelet image.The scanning method of the high-frequency sub-band is changed to get the best coding sort.Finally the Run-Length Encoding（RLE） achieves the output.The result shows that the algorithm can get better compressing efficiency and is feasible.

Key words: medical image, Integer Wavelet Transform（IWT）, Differential Pulse Code Modulation（DPCM）, lifting scheme, Embedded Zero-tree Wavelet（EZW）

摘要： 现代医疗成像设备产生了大量高价值的医学图像，如何对信息进行有效的存储、查询以及网络传输是一个亟待解决的问题。利用整数小波变换和零树编码算法对医学图像进行了压缩研究，在对嵌入零树小波编码（Embedded Zero-tree Wavelet，EZW）算法研究的基础上提出一种基于小波系数的嵌人零树小波编码算法。其主要包括：对小波图像的低频子带（LL）进行单独DPCM编码；对高频子带改变扫描方式以获得最佳编码排序，最后用游程编码（RLE）实现输出。实验结果表明，该方法是一种比较有效的编码方法。

关键词: 医学图像, 整数小波变换, 差分脉冲编码调制, 提升方法, 嵌入式零树小波

CLC Number:

TP391.4

ZHAI Guo¹，SONG Yu-qing¹，TAN Jia-ning¹，XU Qing². Research on medical image hybrid coding based on DPCM and EZW algorithm[J]. Computer Engineering and Applications, 2010, 46(31): 243-245.

翟国¹，宋余庆¹，谈佳宁¹，徐庆². DPCM与EZW混合编码在医学图像中的应用研究[J]. 计算机工程与应用, 2010, 46(31): 243-245.

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Research on medical image hybrid coding based on DPCM and EZW algorithm

DPCM与EZW混合编码在医学图像中的应用研究

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