| DPCM与小波变换结合的医学图像无损压缩 |
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| 引用本文： | 赵丽红,田亚男,沙永刚,李景华.DPCM与小波变换结合的医学图像无损压缩[J].东北大学学报(自然科学版),2007,28(10):1454-1457. |
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| 作者姓名： | 赵丽红 田亚男 沙永刚 李景华 |
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| 作者单位： | 东北大学,信息科学与工程学院,辽宁,沈阳,110004;东北大学,信息科学与工程学院,辽宁,沈阳,110004;东北大学,信息科学与工程学院,辽宁,沈阳,110004;东北大学,信息科学与工程学院,辽宁,沈阳,110004 |
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| 摘 要： | 为了解决经典无损压缩方法效率较低的问题,提出了改善医学图像无损压缩效率的方法,并对此方法的原理和算法实现作了详细的介绍和分析.简述了医学图像无损压缩的基本步骤,对差分脉冲编码调制(DPCM)在无损压缩中的作用进行了分析和实现,并在此基础上,提出将整数小波变换与DPCM相结合的医学图像无损压缩方法.通过对比和分析实验结果可知,采用该方法进行的医学图像无损压缩具有算法简洁、压缩比高,实用性强等特点.
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| 关 键 词： | 医学图像 整数小波变换 差分脉冲编码调制 无损压缩 |
| 文章编号： | 1005-3026（2007）10-1454-04 |
| 修稿时间： | 2006-07-29 |
Lossless Compression of Medical Images by Combining Integer Wavelet Transform with DPCM |
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| ZHAO Li-hong,TIAN Ya-nan,SHA Yong-gang,LI Jing-hua.Lossless Compression of Medical Images by Combining Integer Wavelet Transform with DPCM[J].Journal of Northeastern University(Natural Science),2007,28(10):1454-1457. |
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| Authors: | ZHAO Li-hong TIAN Ya-nan SHA Yong-gang LI Jing-hua |
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| Institution: | (1) School of Information Science and Engineering, Northeastern University, Shenyang 110004, China |
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| Abstract: | A new method is presented to improve the efficiency of lossless compression of medical images instead of the low-efficiency method conventionally used.Its operating principle and the implementation of relevant algorithm are described and discussed in detail.Base approach of medical image lossless compression is described briefly.After analyzing and implementing the effect of differential pulse code modulation(DPCM) on lossless compression,a new method combining integer wavelet transform(IWT) with DPCM is proposed and tested to compress medical images.Comparing the different methods and analyzing the test results,the method proposed shows simpler and more useful with high compression ratio and practicability in lossless compression of medical images. |
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| Keywords: | medical image IWT(integer wavelet transform) DPCM(differential pulse code modulation) lossless compression |
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