关于频率域的数字图像水印的文字，有小波变换，傅里叶变换-On the frequency domain of digital image watermarking text, there are wavelet transform, Fourier transform

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 .

采用matlab进行傅里叶变换，将图像变换成频谱形式的图像。-Using MATLAB Fourier transform, the image is converted into a spectrum in the form of image.

用matlab实现的傅里叶变换，读入文件，显示时域图像和频域图像，可以进一步分析。-Using matlab to achieve the Fourier transform, read the file, display the time domain image and frequency domain image, you can further analysis.

图像处理的基本操作，主要以傅里叶变换为例，展示代码细节(The basic operation of image processing, mainly Fourier transform, for example, display code details)