gaosi.m是给图片2.jpg添加高斯噪声，再用3×3的均值滤波和中值滤波处理。lvbo.m是给图片2.jpg添加椒盐噪声，再用3×3的均值滤波和中值滤波处理。-Gaosi. M is for picture 2. JPG to add gaussian noise, with 3 x 3 average filtering and median filtering processing. Lvbo. M is for picture 2. JPG add salt and pepper noise, with 3 x 3 average filtering and median filtering processing.