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基于多小波变换的医学图像压缩 被引量:3

Medical Image Coding Based on Multiwavelet Transform
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摘要 本文介绍了多小波变换的基本概念、多小变换变换的特点以及GHM多小波。同时对多小波变换的实现中的若干细节问题进行了说明,其中包括预处理、边界延拓、二维多小波变换等,最后对多小波用于医学图像压缩进行了研究,最终的实现结果表明,在现有的用于小波变换的编码模型中,选用适当的多小波函数,也能得到与小波变换相当的编码性能,这一结果说明,若针对多小波变换的特点,设计相应的编码方案,图像编码的性能可能还有一定的提升空间。 In this paper, we introduce the notion and advantages of multiwavelet transform and the GHM multiwavelet. Some detials of multivavelet transform such as preprocessing,boundary extension,2-D multiwavelet transform are discussed thoroughly, At last we focus on medical image coding based on multiwavelet transform, The experiment results show that we can get comparative performance after replacing the wavelet with multwavelet even using the existent coder designed for wavelet, so we believe the Image coding based on multiwavelet transform has potential merit.
出处 《中国医学物理学杂志》 CSCD 2006年第1期20-24,共5页 Chinese Journal of Medical Physics
基金 973基金(No.2003CB716104) 国家自然科学基金重点项目(No.30130180) 广东省科技计划项目(No.2003B30605)
关键词 图像编码 多小波变换 医学图像 SPIHT Image coding multiwavelet transform medical image SPIHT
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