数字图像高密度脉冲噪声的非对称修正中值滤波算法研究  

The research on digital image UTMF of high-density impulse noise

作　　者：李勇[1] 陈琳[1] 崔道江 

机构地区：[1]新疆轻工职业技术学院信息与软件分院,新疆乌鲁木齐830021

出　　处：《电子设计工程》2017年第15期51-53,共3页Electronic Design Engineering

摘　　要：针对数字图像高密度脉冲噪声下常规中值滤波方法存在的不足,从滤波算法入手,通过设置对噪声点的检测判定和对其邻域取样范围的优化选择的方法来加以完善。经过滤波窗口对图像的遍历,检测并非对称地修正噪声点,计算得出取样值邻域中噪声点以外像素值的中值取而代之,重复直至无噪声点。仿真实验表明,此非对称修正中值滤波算法滤除此类噪声性能佳,图像细节保护良好。Aiming at the shortcomings of conventional median filtering method in high density impulse noise of digital image, this paper improves the filtering algorithm by setting the detection and determination of noise point and the optimal selection of its neighborhood sampling range. Through the filter window traversal on the image, the detection is not symmetrical to correct the noise point. The median of the pixel values outside the noise point in the neighborhood of the sample value is calculated and replaced by repeating until there is no noise point.The simulation results show that the proposed algorithm can filter out such noise better and the image details are well protected.

关 键 词：数字图像处理 中值滤波 高密度脉冲噪声 非对称修正中值滤波 

分 类 号：TN911.4[电子电信—通信与信息系统]