几种小波图像编码方法的比较  

The comparison of several wavelet image coding methods

作　　者：王强[1] 卓力[1] 王素玉[1] 沈兰荪[1] 

机构地区：[1]北京工业大学信号与信息处理研究室,北京100022

出　　处：《电路与系统学报》2009年第6期105-110,共6页Journal of Circuits and Systems

基　　金：国家自然科学基金项目(60772069);863计划项目(2008AA01A313;2009AA12Z111)

摘　　要：小波变换具有良好的时频或空频局部特性,特别适合于按照人眼视觉系统特性设计的图像/视频编码方案。随着MPEG-4和JPEG-2000等基于小波变换的图像/视频编码标准的制定和推广,小波编码技术将被广泛采用。目前小波图像编码的方法有很多,其中嵌入式编码方法得到了人们的广泛关注。本文首先介绍EZW、SPIHT、SPECK等七种小波编码器的原理和方法,然后对这几种小波编码器的性能进行了比较。Wavelet transform has the good local features in the temporal frequency or spatial frequency domain, so it is especially suitable for image/video coding schemes, which are designed according to the characteristics of human visual system. Along with the establishment and application of the wavelet-based image/video coding standards, such as MPEG-4 and JPEG-2000, wavelet transform will be widely exploited. At present, there exist various wavelet coders, amongwhich the embedded coding method has attached wide attention. In this paper, seven wavelet coders, such as EZW, SPIHT, SPECK, are introduced first, and then the performance of these wavelet coders is compared.

关 键 词：图像编码 小波变换 嵌入式编码 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]