基于中值滤波和小波变换的天气雷达回波图像处理

WEATHER RADAR ECHO IMAGE PROCESSING BASED ON MEDIAN FILTER AND WAVELET TRANSFORM

本文提出了一种中值滤波和小波变换相结合的天气雷达回波图像处理方法,分别从目标回波的视觉角度和统计量的客观角度对处理后图像进行了分析。实验结果表明,本文算法实现了去除回波图像中高斯和脉冲混合噪声的目的,有效的保留了回波图像边缘细节,视觉效果好,层次感较为丰富,处理效果明显优于传统图像处理方法,为自动识别回波种类的研究提供了良好的基础。

In this paper,a new image processing method was put forward based on median filter and wavelet transform about weather radar echo,and analysed from a vision standpoint of target echo and objective standpoint of statistic. The experiment results show that the method not only can efficiently remove mixed Gaussian and impulse noise in echo image, but also preserve the echo image edge information. Echo image processed by the method can obtain good vision effect and abundant level sense. The processing performance is obviously superior to traditional image processing method, offers good foundation for autorecognising echo sort research.