基于内容的嵌入零树小波图像编码算法  

New Content-Based Embedded Zerotree Wavelet Image Coding

作　　者：王向阳[1] 杨红颖[1] 

机构地区：[1]辽宁师范大学计算机与信息技术学院,辽宁大连116029

出　　处：《小型微型计算机系统》2004年第7期1372-1374,共3页Journal of Chinese Computer Systems

基　　金：辽宁省自然科学基金 (2 0 0 3 2 10 0 )资助

摘　　要：提出了一种基于内容的嵌入零树小波图像编码算法 ,该算法以 EZW编码方案为基础 ,但能够充分依据人眼视觉掩蔽特性自适应确定高频子带系数的扫描顺序 ,从而有效克服 EZW算法低比特率下图像边缘及纹理处复原质量不理想的弱点 .对比实验表明 :本文算法的图像复原质量明显优于In this paper, a new content based embedded zerotree wavelet image coding is presented . It can be viewed as an improved version of EZW algorithm. But unlike EZW, the coefficients in high frequency subband is scanned adaptively in the order of visual masking value in our compression algorithm, which improve the recovery quality of image edge and texture. The experiment results show that the new image compression scheme performs better than that of EZW and other improved coding on the aspects of recovery image quality.

关 键 词：小波变换 EZW算法 视觉掩蔽特性 图像块 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]