Simplifying Standard Median Filtering Algorithm by Window Decomposition and Medians Combination Filtering

摘要：

As the properties of edge preservation and efficient noise attenuation, median filter is widely used. For data processing in low-cost hardware platform such as wireless sensor network nodes, the filtering algorithm must be simple and efficient. In order to reduce the calculation complexity of the median filter with larger window size, a new filtering algorithm which trades off between calculation complexity and noise attenuating ability is proposed. Based on the hierarchical structure of median hybrid filters and applying standard median filtering, the algorithm divides the filtering window into three sub-windows and properly selects the samples for each sub-window, then combines the medians of the subwindows and outputs the median of the combination. The simulation and calculation complexity analysis show that the simplified filtering algorithm effectively reduces the computations, retains the noise attenuating and edge preserving ability and is applicable to low-cost hardware.

关键词： median Jitter simplifying algorithm window decomposition and combination noise attenuating

作者: Shaoqiang Liu Z.K. Tan Lei Chen Xiaoping Fan Zhihua Qu

作者单位: School of Information Science and Engineering Central South University Changsha, China, 410075 Department of Electrics and Computer Engineering University of Central Florida Orlando, FL 32816-245

会议类型: 国际会议

会议名称: 2010 International Conference on Circuit and Signal Processing(2010年电路与信号处理国际会议 ICCSP 2010)

会议地点: 上海

会议语种:英文

页码: 60-63

在线出版日期: 2010-12-25（万方平台首次上网日期，不代表论文的发表时间）