一种结合检测技术与四阶偏微分方程的去噪算法  

An impulse noise removal algorithm by detection technology and fourth-order PDE

作　　者：吕岚[1] 王美清[2] 厉才康[3] 

机构地区：[1]闽江学院软件学院,福州福建350011 [2]福州大学数学与计算机科学学院,福建福州350108 [3]格林威治大学数学与计算学院

出　　处：《闽江学院学报》2009年第5期53-57,共5页Journal of Minjiang University

摘　　要：针对脉冲噪声的特征,提出结合检测技术与四阶偏微分方程的MSDLC算法.该算法采用"先检测再复原"的两步策略:检测阶段,利用统计的思想定位受到脉冲噪声污染的噪声像素;复原阶段,采用LC四阶偏微分方程对噪声像素点进行复原.采用的LC四阶偏微分方程根据方程性质使用适当的系数函数.实验表明,MSDLC算法可以在脉冲噪声去除方面和保持图像细节方面获得极好的平衡.According to the characteristics of the impulse noise,proposes a new algorithm called MSDLC Algorithm,which combined with detective tenology and fourth-order Partial Different Equation（PDE）.The new algorithm takes the measure of ＂detection firstly then restoration＂.In the detection phase,MSDLC algorithm takes advantage of statistic idea to locate the pixels which are polluted by the impulse noise.In the restoration phase,MSDLC algorithm makes use of LC fourth-order PDE to remove the noises,and the chosen LC fourth-order PDE uses appropriate coefficient function according to the property of LC fourth-order PDE.The experiments show that MSDLC algorithm can achieve a good trade-off between noise removal and edge preservation.

关 键 词：图像去噪 脉冲噪声 四阶偏微分方程 检测 算法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]