将lena图像（或别的）施加Pa=Pb=0.1的椒盐噪声，然后采用3 3中值滤波进行处理，给 出去噪前后的图像 将Pepper图像分别进行平滑和锐化处理，分别给出滤波后的图像-The lena image (or other) the imposition of Pa = Pb = 0.1 of the salt and pepper noise, then a 3 3 median filter processing, the image will be given before an