cor_recover

k-近邻算法 m文件 及其excel示范(this package invulved a m-file example of k-nearest neighbour and its corresponding excel file)

this paper is about the image watermarking using DWT+DCT+CDMA. it provides a good PSNR value then each technique seprately

MP3压缩域的音频水印的研究 基于压缩域的音频信息隐藏技术，主要研究在MP3等格式的音频文件中嵌入秘密信息达到版权保护的目的。(a audio watermarking based on modified discrete cosine transform ofmpeg/ audio layer III)

对原始灰度图像进行图像压缩，对此图进行 8×8 DCT 变换后，分别只保留 DC系数，以及保留前 4、8、16 个变换系数(DC＋AC) ，然后再分别进行 IDCT 变换 (The original gray image compression, this map for 8 × 8 DCT transform, respectively, to retain only the DC coefficient, and to retain the former 4,8,16 months transform coefficients (DC+ AC), and then separately IDCT transform)

矩形波傅里叶变换，n=1,3,5,9,19,39,79,159(Square wave Fourier transform)

LDPC MATLAB工具箱，提供LDPC编解码程序(LDPC MATLAB Toolbox provides procedures LDPC Codec)

混沌算法的详细讲解，及基本的matlab代码实现，入门必备的(Explain in detail the chaos algorithm matlab code and basic, entry-essential)

用Matlab R2009b进行数字音频减少泄漏处理编程(Using Matlab R2009b processing of digital audio programming to reduce leakage of)

This is a MATLAB program for Histogram Matching. Used In digital Image Processing.

包含matlab常用图像操作，概括全面，包含读写图像文件、图像的显示等(Contains matlab common image manipulation and comprehensive summary, including reading and writing image files, image display, etc.)