一种新的无损小波图像压缩算法  

A New Lossless Wavelet Algorithm for Image Compression

作　　者：刘传才[1] 

机构地区：[1]福州大学计算机系,福建福州350002

出　　处：《小型微型计算机系统》2003年第3期474-479,共6页Journal of Chinese Computer Systems

基　　金：国家"973"资助项目 (G19980 3 0 60 0 )资助;福建省自然科学基金项目 (F0 0 0 13 )资助;福建省教育厅科研项目 (K990 2 7)资助

摘　　要：基于 Daubechies5 - 3旋转小波 ,本文提出了一种无损图像压缩新算法 .这一工作证实了小波压缩的如下问题 :小波压缩具有与 JPEG那样快的运行速度 ;在不改变变换系数的条件下 ,采用序贯处理方法能急剧地减小存储器的需要量 ;能用小波实现图像的无损压缩 .对比实验表明 ,这种快速、有效的无损图像压缩技术比标准的Based on the Daubechies 5 3 rational wavelet, this paper presents a new lossless wavelet algorithm for image compression. This work manages to demonstrate the following problems about wavelet compression: wavelet compression can run just as fast as JPEG; memory requirements can be drastically reduced by using sequential processing with no change in the transform coefficients; a lossless image compression could be implemented with Daubechies 5 3 wavelet. It is found that the performance of the proposed lossless wavelet algorithm for image compression is better than that of the international standard algorithms known as JBIG and lossless JPEG.

关 键 词：无损小波图像压缩算法 图像编码 图像处理 JPEG 无损压缩 小波变换 位平面编码 序贯变换 

分 类 号：TN919.81[电子电信—通信与信息系统] TP391.41[电子电信—信息与通信工程]