中文说明：实现二维图像的读取，输出，放大，缩小，旋转，进行傅里叶变化，图像增强，图像的几种降噪方法等功能。
English Description：
Realize the functions of two-dimensional image reading, output, amplification, reduction, rotation, Fourier transform, image enhancement, several noise reduction methods and so on.