基于多小波变换的图像去噪改进算法

在介绍多小波理论的基础上，提出一种基于多小波的自适应图像去噪算法，该方法根据多小波系数在不同子带、不同方向上的特性自适应选取不同的最佳阈值，然后再与图像的分解尺度函数因子结合起来。实验表明，与单小波和其它使用不同预处理过程的传统多小波去噪方法相比，该方法有效地去除了白噪声，进一步提高了图像的峰值信噪比（PSNR）和最小均方误差（MSE）。

An improved image denoising method based on multiwavelet transform

Based on the basic theory of multi-wavelet,an improved adaptive image denoising method is proposed.According to the characteristic of the multi-wavelet coefficients in different directions of the different sub-band and combine with the image decomposition scaling function,this method can select different adaptive threshold of the best.Experiments show that this method can remove the white noise effectively.Comparing with the wavelet denoising and the traditional multi-wavelet denoising,it improves the PSNR ...