基于小波变换的图象压缩

要在模拟和移动通讯中传输数字图象，首先必须对图象实行高比率的压缩，本文对讨论小波变换的特征机理，建立了以小波变换为基础图象压缩软件模拟系统，并同标准ＪＰＥＧ的图象压缩方法做了对比实验，结果证明：在高压缩比时，基于小波变换压缩的重建图象ＰＳＤＮ和重建图象质量都明显地成于传统的ＤＣＴ压缩方法。

Image Compression Based on Wavelet Transform

Image compression at high ratios is essential for applications such as image transmission and services on analog and mobile networks. This paper gives a brief overview of the possibilities and characteristics of image compression techniques based on Wavelet Transform (WT). We have estimated the performance of available coding software based on WT in comparison with coding result based on the JPEG standard. The conclusions taken from the obtained results and approximations will give an approach of the possibilities of WT based coding techniques in future applications.