计算机与现代化Issue(9)：12-14,18,4.DOI:10.3969/j.issn.1006-2475.2011.09.004
基于提升小波变换和EZW编码的图像压缩算法
Image Compression Algorithm Based on Lifting Wavelet Transform and EZW Encoding
摘要
Abstract
The method of embedded zero tree wavelet code( EZW) is one kind of effective image coding method. The research for the zero tree method finds too many zero trees root in the output code of EZW and the high time complexity of the original EZW encoding algorithm. To reduce the number of bits for zero tree root, a fixed RLC is proposed to encode the continuous zero trees. In this algorithm the lifting wavelet is employed to reduce the time complexity of EZW. Experiment result shows that the proposed algorithm can improve the image compression ratio and the coding efficiency comparing with the traditional EZW algorithm.关键词
图像压缩/提升小波变换/EZW算法/游程编码Key words
image compression/ lifting wavelet transform/ EZW algorithm/ run-length coding分类
信息技术与安全科学引用本文复制引用
刘敬,李东晖,武永红..基于提升小波变换和EZW编码的图像压缩算法[J].计算机与现代化,2011,(9):12-14,18,4.基金项目
中央高校基本科研业务费(CDJZR10180011) （CDJZR10180011）
