对分别添加了椒盐噪声（密度为0.03）和高斯白噪声（均值为0，方差为0.02）的图像，利用三种方法进行去噪，显示原始图像、加噪图像和去噪图像-They were added to the salt and pepper noise (density 0.03) and white Gaussian noise (zero mean and variance 0.02) images, using three methods of de-noising, shows the original im