摘要
图像在传播时会受到各种噪音的影响,中值滤波器采用非线性计算方式,可很好地过滤脉冲噪音。但滤波窗口尺寸对去除脉冲噪音的功能具有干扰性,使其能提高图像画面感,但不能很好地保留细节的完整性。文章分析了中值滤波器的优劣,提出可以依照噪声点方位自适应地改变滤波器窗口尺寸的办法,避免了中值滤波容易导致图片边缘不清楚的问题。借助Matlab做了模拟检测,结果表明,该办法具有较好的滤波特性。
The image is affected by various noises when it is transmitted. The median filter, which adopts a nonlinear calculation method, can filter the pulse noise well. However, the size of the filter window is a disturbing to the function of removing the impulse noise, which can improve the image but not well preserve the integrity of the details. This paper analyzes the advantages and disadvantages of the median filter, and proposes that the filter window size can be adaptively adjusted according to the noise point orientation, which avoids the problem that median filtering makes the image edges unclear. The simulation results of Matlab show that the method has better filtering characteristics.
作者
燕红文
邓雪峰
Yan Hongwen;Deng Xuefeng(College of Information and Engineering,Shanxi Agricultural University,Jinzhong,Shanxi 030801,China)
出处
《计算机时代》
2020年第2期47-49,共3页
Computer Era
基金
“山西农业大学科技创新基金资博士科研启动资助”(2017YJ30)
“山西农业大学科技创新基金”(201318)
山西农业大学信科院教研管项目(XKY19206)
“山西省优秀博士来晋工作奖励资金科研项目”(SXYBKY201721)
