1了解图像变换的意义和手段；

2熟悉离散傅里叶变换、离散余弦变换、离散小波变换的基本性质；

3熟练掌握图像变换的方法及应用；

4通过实验了解二维频谱的分布特点；

5通过本实验掌握利用MATLAB编程实现数字图像的变换。

-An understanding of the meaning and image transformation means　2 familiar with the discrete Fourier transform, discrete cosine transform, discrete wavelet transform the fundamental nature　3 master image transformation method and its application　four experiments to understand the distribution characteristics of two-dimensional spectrum　5 Through this study, MATLAB programming master the use of digital image transformation.