一种基于小波变换的数字图像加密算法.PDF 利用matlab实现-based on wavelet transform digital image encryption algorithm. PDF achieved using Matlab

matlabf非常好基于Contourlet变换的水印算法.与小波变换不同的是Contourlet变换采用类似于线段（contoursegment的基得到一种多分辨、局部化、方向性的图像表示。水印信号通过基于内容的乘性方案加载到Contourlet 变换系数-matlabf very good Contourlet Transform-based watermarking algorithm. and wavelet transform is different Contourlet trans

Content based image retrieval in java using k-means clustering and haar wavelet transform