一种改进的去除数字图像脉冲噪声方法  

Improved method of removing impulse noise of digital image

作　　者：严盟[1] 金聪[1] 文昌[1] 

机构地区：[1]华中师范大学计算机科学系,武汉430079

出　　处：《电子测量技术》2011年第12期39-41,69,共4页Electronic Measurement Technology

基　　金：教育部人文社会科学研究规划基金项目(11YJAZH040)

摘　　要：提出了一种新的高效的数字图像脉冲噪声检测和去噪方法。该方法主要由2部分组成:噪声的检测和噪声的去除。检测阶段主要的任务是将图像信号点和噪声点区分开来,噪声去除阶段的主要任务是对检测到的噪声进行滤波处理。用一种改进的中值滤波器和均值滤波器来去除检测到的噪声点。实验结果表明该方法与其他方法相比,在噪声去除和图像细节保护方面性能更好,尤其是高噪声率时。A new approach to detect the impulse noise from the corrupted image is proposed.The approach consists of two steps：impulse noise detection and removal.The main task of impulse noise detection phase is to dintinguish the image points and noise points,while the mission of removal phase is to filter the detected noise.Modified versions of the median filter and mean filter are proposed to remove the detected impulse noise.Experimental results show that the proposed approach can get better performance than the comparison filters in the cases of being effective in noise suppression and detail preservation,especially when the noise ratio is very high.

关 键 词：脉冲噪声 脉冲噪声检测器 去噪 滤波器 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]