摘要
提出了一种中值滤波的快速算法。与中值滤波的传统算法相比较,该算法的特点是考虑到了相邻的两个中值滤波窗口内信号数据的相关性。在运算过程中,保留前面窗口内数据的排序信息,作为下一个窗口内数据排序的参考。这样可将传统算法中相邻的两次中值滤波运算合并为一次进行,从而减少了中值滤波过程中比较运算的次数,很大程度上提高了运算效率。
A fast algorithm of median filtering is proposed. Compared with the old algorithm, the speciality of the fast algorithm is that the relation of data in the two neighboring median filtering windows is considered. In the process of median filtering, the result of sorting of data in former window is preserved as a reference for the sorting of data in the next window, so we can combine the two neighboring median filtering processes as one, and the times of comparison is reduced. By using this fast algorithm, the efficiency of computation is highly improved.
出处
《数据采集与处理》
CSCD
1995年第2期151-155,共5页
Journal of Data Acquisition and Processing
基金
安徽省教委基金
