一种改进的图像压缩方法及其Matlab实现  

An Improved Image Compression Method and Its Realization Based on Matlab

作　　者：陈勇[1] 郭金旭[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2007年第12期26-30,共5页Journal of Wuhan University of Technology：Information & Management Engineering

摘　　要：介绍了JPEG图像压缩算法,并对含有噪声的数字图像去除相关性差的问题,提出了先滤波再进行JPEG压缩的方法。在Matlab数学分析工具环境下仿真了该算法。实验结果表明,在图像客观保真度优于经典JPEG压缩方法的情况下,也能减小平均码长。同时也体现了Matlab用来实现JPEG的图像编解码过程,具有方法简单、速度快和误差小的优点。The algorithm of the JPEG image compression was introduced. A new JPEG compression method - pre -filtering before compressing was proposed, which can cope with the problem of impairing dependency of noised digital image. The new method was simulated under the environment of the experimentation with MATLA. The result indicates that the method can reduce the average length of code in situations when an image impersonal fidelity is superior to classical JPEG algorithm. Many simulation experiments show that the method proposed is simple and fast with few errors.

关 键 词：MATLAB 噪声 JPEG 图像压缩 

分 类 号：TN911.73[电子电信—通信与信息系统]