此程序可实现广为应用的离散余弦变换（DCT).-the program can actualize image discrete cosine transform which is widely used.

一个DFT变化程序，可以实现图像的DFT变化，并且能够显示DFT域图像-A DCT transform program, you can achieve DFT change the image, and the image can be displayed DFT domain