压缩文件中包含用小波变换、傅里叶变换、哈达玛变换、离散余弦变换实现图像压缩的源码，和一个绘制图像直方图及均衡化后的图像的直方图的程序。-Zip file contains the wavelet transform, Fourier transform, Hadamard transform, discrete cosine transform image compression source code, and a procedure of drawing image histogram .