机构地区: 九江学院电子工程学院
出 处: 《组合机床与自动化加工技术》 2011年第10期49-52,共4页
摘 要: 结合均值滤波器和中值滤波器各自在图像去噪中的优点,借助阈值图像分割思想,提出一种阈值开关空域滤波器设计新思想。在该滤波器设计中,先求解模块中未被噪声污染的像素点占模板总像素数的比值,然后设置一个阈值并用该阈值将比值划分为不同的分段,最后对每个分段采用不同空域滤波算法。将本设计方法与标准中值滤波、算术均值滤波以及修正的阿尔法均值滤波器进行仿真分析。实验结果表明,这种设计方法在图像去噪与保留细节方面都有很好的效果,即使是高密度的噪声,采用较小窗口滤波,也能取得较好的除噪效果。 With the mean filter and median filter's defferent denoising ability,and with the ideas of threshold image segmengation A new filtering algorithm based on threshold switch is presented.We can remove noise in this algorithm With setting a threshold and dividing the proportion into different segments by this threshold,and then using a different filtering algorithm in each segment.Experiment results show that the new algorithm is the best camparing to median filter,mean filter,alpha mean filter.The algorithm can achieved some good rusults in performance to keep the content of image and remove noise,especially in the case of strong noise and small window.