摘要
对多种中值滤波算法的去噪效果和耗时进行了研究,提出一种改进的快速中值滤波算法。先采用二分法删除第一列数据,插入窗口第三列数据来求得中值,接着对该像素点进行噪声的确定,然后根据判断结果进行中值滤波处理。此算法将中值滤波算法的排序比较次数降低了一半,使得滤波的速度提高了3.5倍;同时减少了图像细节信息的丢失,提高了中值滤波算法的信噪比。
The paper makes a comparative study of many algorithms of the median filter＇s effects of eliminating noise and its time cost. Based on it, an improved , fast algorithm of median filter is offered. First we delete the first column of data due to the dichotomy and insert into the windows the third column of data to locate the median. After that the noise point of that pixel will fixed and analysis of the median filter is done according to the results. This algorithm cuts into half the usual times of rankings and makes it as 3.5 times as faster the speed of the algorithm of standard median filter. At the same time it reduces the losing of the details of picture information and raises the signal noise ratio of the algorithm of median filter.
出处
《安徽建筑工业学院学报（自然科学版）》
2008年第4期24-26,90,共4页
Journal of Anhui Institute of Architecture(Natural Science)
关键词
中值
滤波
二分法
Median
Filter
Dichotomy
