摘要
噪声的特点表现为临近像素值梯度的急剧变化,噪声点反映在频域上代表图像信号的高频分量,通过低通滤波器滤除这些高频分量,实现对图像的平滑抑噪。论文介绍了四种滤波器在图像处理中的应用实例。实验表明,四种滤波器均能够达到良好的去噪效果。
Noise characteristics of the performance of a dramatic change on the pixel value gradient, noise points reflect the high-frequency component of the image signal represented in the frequency domain, this high-frequency component is filtered through a low-pass filter, to achieve smooth noise suppression. This paper introduces application examples of four kinds of the filters in image processing. Experiments show that the four kinds of filter can achieve good denoising effect.
出处
《舰船电子工程》
2013年第8期53-54,57,共3页
Ship Electronic Engineering
关键词
低通滤波
傅里叶变换
滤波窗口
low-pass filtering, Fourier transform, filtering window
