一种多模板的混合滤波乘性噪声图像去噪算法

A novel image denoising algorithm based on mulit-template with hybrid filter

提出了一种计算简单的去除图像乘性噪声的自适应混合算法，它通过事先定义一组实现简单的具有不同特性、不同大小窗口的中值和均值滤波器组，根据图像不同区域特征选择不同滤波器进行滤波。该算法能有效地利用空间滤波的特性，且便于硬件实现。实验结果表明，与现有的自适应去噪算法相比，该算法不但计算简单，而且在噪声抑制和细节保留方面综合平衡较好。

A novel image denoising algorithm based on the multi-template with a hybrid filter is proposed in this paper. It takes the advantages of both the group of mean filters and the group of median filters, and is convenient to implement in hardware due to its simple calculation. The experimental results show that in comparison with the existing filters, the hybrid filter outperforms others in achieving the better balance between speckle suppression and image detail preservation.