实现图像处理的正交变换，包括离散傅里叶变换、余弦变换和Wlash变换-Orthogonal transformation to achieve image processing, including the discrete Fourier transform, cosine transform and Wlash transform

基于matlab的数字图像的二维傅立叶变换(FFT)以及二维离散余弦DCT变换，提供里详细代码，.m文件-Matlab-based digital image two-dimensional Fourier transform (FFT) and two-dimensional discrete cosine transform DCT offers in detailed code,. M file

正弦函数的离散傅里叶变换，输出傅里叶变换系数-Discrete Fourier sine transform, Fourier transform coefficients output