一种模糊自适应滤波算法的研究与实现
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摘要
为解决均值滤波和中值滤波算法在数字信号处理中存在的问题,提出一种模糊自适应滤波算法.根据每个元素噪声度的大小控制均值滤波窗口的大小,并做了大量的仿真.与普通的均值滤波和中值滤波进行比较发现,该方法不仅很好地去除了信号中混有的脉冲,而且在不损坏信号细节的前提下,很好地滤除了噪声信号.最后,使用了信噪比改善因子S来检验算法的滤波效果,证明其滤波效果好于传统的中值滤波和均值滤波,且具有算法简单、实时性好等特点,并已经应用在很多场合.
This paper introduces a kind of adaptive filtering algorithm of fuzzy to solve the mean filter and median filtering algorithm in digital signal processing problems.The algorithm in many simulations can control windows size of the mean filter according to degree of membership of each element's noise.Compared with normal mean filtering algorithm and median filtering algorithm,this algorithm filters not only pulse but also noise signal commendably at the condition of signal detail not damaged.Finally,using improvement factor"S"proved this algorithm's effectiveness of the filter.This algorithm proved better than the mean filter algorithm and median filter algorithm.The biggest advantage is that the algorithm is simple and has a good real time feature,and it has been used in many fields.
This paper introduces a kind of adaptive filtering algorithm of fuzzy to solve the mean filter and median filtering algorithm in digital signal processing problems.The algorithm in many simulations can control windows size of the mean filter according to degree of membership of each element's noise.Compared with normal mean filtering algorithm and median filtering algorithm,this algorithm filters not only pulse but also noise signal commendably at the condition of signal detail not damaged.Finally,using improvement factor"S"proved this algorithm's effectiveness of the filter.This algorithm proved better than the mean filter algorithm and median filter algorithm.The biggest advantage is that the algorithm is simple and has a good real time feature,and it has been used in many fields.
引文
[1]董付国,原达,王金鹏.中值滤波快速算法的进一步思考[J].计算机工程与应用,2007,43(26):48-49,64.
[2]刘财,李红星,陶春辉,等.模糊嵌套多级中值滤波方法及其在地震数据处理中的应用[J].地球物理学报,2007,50(5):1534-1542.
[3]金良海,李德华,姚行中.自适应距离加权的中值滤波算法[J].模式识别与人工智能,2007,20(4):577-581.
[4]NODES T A,GALLAGHER N C.Median Filters:Some Modifications and Their Properties[J].IEEE Trans on Acoustics,Speech and Signal Processing,1982,30(5):739-746.
[5]陈大力,薛定宇,高道祥.图像混合噪声的模糊加权均值滤波算法仿真[J].系统仿真学报,2007,19(3):527-530.
[6]王立梅,王建文.基于模糊加权均值滤波算法的三维重建[J].机械与电子,2007(2):75-78.
[2]刘财,李红星,陶春辉,等.模糊嵌套多级中值滤波方法及其在地震数据处理中的应用[J].地球物理学报,2007,50(5):1534-1542.
[3]金良海,李德华,姚行中.自适应距离加权的中值滤波算法[J].模式识别与人工智能,2007,20(4):577-581.
[4]NODES T A,GALLAGHER N C.Median Filters:Some Modifications and Their Properties[J].IEEE Trans on Acoustics,Speech and Signal Processing,1982,30(5):739-746.
[5]陈大力,薛定宇,高道祥.图像混合噪声的模糊加权均值滤波算法仿真[J].系统仿真学报,2007,19(3):527-530.
[6]王立梅,王建文.基于模糊加权均值滤波算法的三维重建[J].机械与电子,2007(2):75-78.
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