一种基于多级阈值的中值滤波算法设计  

Design of median filtering algorithm with multistage threshold

作　　者：张文博 梁辰 高鑫 Zhang Wenbo;Liang Chen;Gao Xin(College of Information Engineering,Xijing University,Xi'an,Shaanxi 710123,China)

机构地区：[1]西京学院信息工程学院,陕西西安710123

出　　处：《计算机时代》2020年第5期9-12,共4页Computer Era

基　　金：陕西省科技厅重点项目“共享时代下的大数据安全研究与应用”(2019KRZ014)。

摘　　要：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。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.

关 键 词：图像去噪 加权中值滤波 MATLAB 多级阈值 

分 类 号：TP751.1[自动化与计算机技术—检测技术与自动化装置]