数字图像中值滤波技术研究

中值滤波作为图像处理中的一种非线性滤波技术，在有效抑制脉冲噪声的同时能很好地保护图像信号的细节信息，尤其是在处理椒盐噪声方面效果较好，得到了广泛的研究和应用。文章通过对中值滤波及其改进方法的研究，比较了不同方法的运算效率及对不同图像的去噪效果，分析中值滤波技术的研究方向。

Study on digital image median filtering technique

Median filtering which is a nonlinear filtering technique,can protect the detail information of images when effectively restraining impuls noises.h has better effect in especially processing the salt and pepper noise, and has been widely studied and applied.To study median filtering and improved methods,the author compares the efficiency of calculation and noise removal results of the different algorithms on different types of images,and analyses research direction of the median filter technique.