变窗长秩排序统计滤波器与噪声图象滤波

Window—range Variable Order Sequencing Statistical Filter and Noise Image Filtering

基于信号分解理论,在非线性秩排序统计滤波器基础上,提出一种新型的非线性滤波器结构——二值秩排序统计滤波器。主要工作包括:(1)提出了滤波器的定义和实现结构;(2)实现算法;(3)滤波特性分析;(4)噪声图象滤波的计算机仿真。理论分析和实验结果表明,本文提出的滤波器具有良好的脉冲干扰抑制能力和边缘保持特性,硬件实现简单。

Based on the non—linear order sequencing filter and the theory of signal grouping,the author proposed the structure of a new kind of non—linear filter——double—value sequencing filter. The main work done includes: (1)proposed the definition and implementation structure of the filter; (2)implementation algorithm; (3)characteristic analysis of the filter; (4)computer simulation of noise image filtering. Theoretical analysis and experimental results show that the filter has a strong ability to restrain pulse interference and it has good edge—holding function. Its hardware implementatin is also easy.