含不同噪声的图像，用同样的滤波器去噪效果也不同，而且对同一种噪声，用不同的滤波方法，效果亦不同，对特定的噪声选择合适的滤波方法很重要。 -Noise with different images, with the same results would be different de-noising filter, but also for the same type of noise, a different filtering method, the effect of different