一种基于多级阈值的中值滤波算法设计

虽然加权中值滤波在一定程度上对图像有着良好的去噪效果,但是不能在对图像去噪的基础上很好地保留图像细节。针对该算法存在的缺点,提出了基于多级阈值的中值滤波算法。采用Matlab软件编程,通过设定多级阈值方法来检测当前像素点是否为噪声点,使算法在去噪的基础上对图像细节有良好的改善。实验结果表明改进的加权中值滤波算法对图像细节有明显的提高。

Design of median filtering algorithm with multistage threshold

Although the weighted median filter has good denoising effect on the image to some extent, but it cannot retain the details of the image on the basis of the image denoising. For the shortcomings of the algorithm, a median filtering algorithm with multi-level threshold is proposed. Programming with Matlab software, through the method of setting multistage threshold to detect whether the current pixel is a noise point, the algorithm can well improve the image details on the basis of denoising. The experimental results show that the improved weighted median filtering algorithm has an obvious improvement on image details.