中文说明：
在matlab环境下最近邻插值法、双线性插值法对图像进行放大和缩小。以及对图像加入噪声椒盐，高斯，乘性噪声。
English Description：
Nearest neighbor interpolation method in the matlab environment, bilinear interpolation method for the image to zoom in and out.As well as to the images add salt and pepper noise, gaussian, multiplicative noise.