中文说明：
（1）熟悉并掌握傅立叶变换
（2）了解傅立叶变换在图像处理中的应用
（3）通过实验了解二维频谱的分布特点
（4）用MATLAB实现傅立叶变换仿真
((1) be familiar with and master the Fourier transform (2) understand the Fourier transform in image processing applications (3) experiments to understand the characteristics of the two-dimensional distribution of the spectrum (4) simulation using MATLAB Fourier transform)
English Description：
(1) Familiar with Fourier transform