使用MAtlab语言，在一幅图像中添加各种噪声，比如：椒盐噪声，高斯噪声，均匀，指数，对数，厄尔等噪声。-Using Matlab language, to add a variety of noise in an image, such as: salt and pepper noise, Gaussian noise, uniform, exponential, logarithmic, El noise.