基于混合编码的分形图像压缩方法研究  

Fractal Image Compression Based on the Mixed Encoding

作　　者：张仲敏[1] 宋凭[2] 杨科利[2] 马海燕[2] 

机构地区：[1]西北工业大学自动化学院,陕西西安710072 [2]西安通信学院计算机与信息工程系,陕西西安710106

出　　处：《激光与红外》2006年第9期915-918,共4页Laser & Infrared

摘　　要：提出了一种基于混合编码的分形图像压缩方案,改进了分形编码与SPIHT算法,对提升小波变换后的最低频部分采用改进的分形编码,其他部分采用改进的SPIHT算法。试验结果表明,该方法在缩短了图像压缩时间的同时,明显减少了分形压缩恢复图像的方块效应。A fractal image compression project based on the mixed encoding algorithm is proposed. The algorithm is consisted of improved fractal encoding in the lowest- frequency part of lifting wavelet transform coefficients and improved SPIHT algorithm in the other parts. The experimental results show that the block effect of recovery image in fractal compression is improved at much less compression time.

关 键 词：图像压缩 混合编码 分形编码 SPIHT算法 

分 类 号：TN919.8[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]