一种基于DCT的快速分形图像编码方法  

A FAST DCT BASED FRACTAL IMAGE CODING APPROACH

作　　者：严宁[1] 李启炎[1] 

机构地区：[1]同济大学CAD研究中心,上海200092

出　　处：《计算机应用与软件》2003年第6期43-44,共2页Computer Applications and Software

摘　　要：分形图像编码能获得很高的压缩比,但存在编码时间过长的缺点。本文根据离散余弦变换(DCT)能量集中的特性,提出一种基于DCT的快速分形图像编码方法。实验结果表明,该方法与传统的分形块编码方法相比,编码速度有很大提高,并能获得较高的峰值信噪比(PSNR)。High Compression Ratio can be achieved through fractal image coding. But the coding time of fractal image coding is too much. In this paper, a fast fractal image coding approach based on DCT is proposed according to the energy compaction property of DCT. The simulation results show that the coding speed of the new approach is much faster than the traditional fractal block coding approach. And high PSNR is achieved.

关 键 词：快速分形图像编码方法 DCT 离散余弦变换 峰值信噪比 分形块编码 图像压缩 

分 类 号：TN919.81[电子电信—通信与信息系统]