基于SA4向量小波的图像去噪

Image Denoising Based on SA4 Multiwavelets

本文介绍了向量小波变换的一般理论与SA4向量小波的性质,并比较了向量小波变换和标量小波变换之间的异同,并指出,预滤波是向量小波变换的必要环节。并把SA4向量小波用于图像去噪。实验结果表明:SA4向量小波去噪效果不仅优于标量小波,而且还略优于CL向量小波。

In this paper, some basic theory of multiwavelets and some features of SA4 multiwavelets are described. Moreover, multiwavelets transform is different from scalar wavelets transform for it needs prefiltenng before DMWT. As an example, SA4 multiwavelets is used in image denoising. The experiment results show: SA4 multiwavelets perform not only better than CL multiwavelets, but also better than scalar ones.