中文说明：应用背景由于图像易受噪声的影响，因此进行图像处理时，需要对加有噪声的图像进行去噪处理。关键技术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。
English Description：
Application backgroundBecause the image is easy to be affected by noise, so the image processing is needed.Key TechnologyTo add the salt and pepper noise (density of 0.03) and additive white Gaussian noise (with a mean of 0, the variance is 0.02) images, the use of three methods for denoising, show the original image, and image denoising and image denoising.