摘要
以改进的数学形态学算法为基础,对其在数字滤波器设计中的应用进行了研究。根据数学形态学基本原理,通过分析,找出传统数学形态学算法边缘检测算子存在的缺点,在该算子基础上做进一步的改进和优化,采用多尺度多结构元边缘检测算子解决传统数学形态学存在的问题,将改进的数学形态算法用于自适应IIR数字滤波器的设计,在Matlab的环境下进行仿真验证。结果表明,采用改进数学形态学算法的数字滤波器可实现低通滤波,输入信号的低频信号经滤波器得到保留,高频信号部分被滤除,输出信号与有用信号相比,有一定延迟,其延迟特性符合FIR数字滤波器,有用信号波形和输出信号波形几乎相同。
In this paper,based on the improved mathematical morphology algorithm,its application in digital filter design is studied.According to the basic principle of mathematical morphology,through analysis,find out the existing traditional mathematical morphology algorithm of edge detection operator shortcomings,further improvements and Optimization in the operator based on the multi scale multi structure element edge detection operator to solve the existing problems of the traditional mathematical morphology,the mathematical morphology algorithm for adaptive IIR digital filter design.Simulation results show that under the Matlab environment,can be realized by using the low-pass filter digital filter improved mathematical morphology algorithm,the low frequency input signal has been retained by the filter,the high frequency signal is filtered,the output signal compared with the useful signal,with a certain delay,the delay characteristics with FIR digital filter,the signal wave and the output signal waveform are almost the same.
作者
肖鹏
XIAO Peng(Department of Basis, Jiangsu Urban and Rural Construction College, Changzhou, Jiangsu 213147, China)
出处
《铜仁学院学报》
2017年第9期57-61,共5页
Journal of Tongren University
关键词
形态学算法
数字滤波器
改进
应用
morphological algorithm
digital filter
improvement
application
