图像噪声 (a)椒盐噪声 (b)高斯噪声 Pepper and Salt noise: similar intensity, random distribution Gaussian Noise: locate at every pixel, random intensity(a) 椒盐噪声 (b)高斯噪声 Pepper and Salt noise: similar intensity, random distribution Gaussian Noise: locate at every pixel, random intensity 图像噪声