中文说明：为图片进行添加高斯噪声均匀噪声以及椒盐噪声，并且采用a修正的均值滤波和自适应中值滤波进行除噪，并且进行除噪性能判断
English Description：
Gaussian noise, uniform noise and salt and pepper noise are added to the image, and A-modified mean filter and adaptive median filter are used for denoising, and the denoising performance is judged