MPRO

M=512 原图像长度 N=64 K=8 I=zeros(M,M) J=zeros(N,N) BLOCK=zeros(K,K) 显示原图像 I=imread( f:ceshiyuanshitu.bmp ) figure imshow(I) xlabel( 原始图像 ) 显示水印图像 J=imread( f:ceshilogistic_nuaa64.bmp ) figure imshow(J) xlabel( 水印图像 ) 嵌入水印 tem=1 for p=1:N for q=1:N x=(p-1)*K+1 y=(q-1)*K+1 BLOCK=I(x:x+K-1,y:y+K-1) BLOCK=dct2(BLOCK) if J(p,q)==0 a=-1 else a=1 end BLOCK(2,1)=BLOCK(2,1)*(1+a*0.01) BLOCK=idct2(BLOCK) I(x:x+K-1,y:y+K-1)=BLOCK end end 显示嵌入水印后的图像 figure imshow(I) xlabel( 嵌入水印后的图像 ) imwrite(I, f:ceshiembedded.bmp )

说明：  对OFDM系统中的时频同步算法进行了仿真，采用的是SC算法！(OFDM systems on time and frequency synchronization algorithm for the simulation, using the SC algorithm!)

提出了一种基于小波变换可抗击几何攻击算法。在水印嵌人 部分# 首先对宿主图像进行小波分解 、 嵌人水印, 再通过余弦变换求得该水印图像的一个特征向量, 利用该特征向量和水印 信息通过12 31 函数生成一个二值逻辑系列, 将该序列作为密钥/ 水印提取部分为# 对待测的图像进行小波变换, 再通过余 弦变换求得待测图像的一个特征向量, 利用该特征向量和密钥通过1 2 4 1 函数提取出水印。(Proposed based on wavelet transform algorithm can be against geometric attacks.# Watermark embedded in the first part of the host image wavelet decomposition, embedded watermark, and then through the cosine transform of the watermarked image obtained by a feature vector, using the feature vector and the watermark information through 1231 to generate a binary logic function series, the sequence as the key/watermark extraction part is# treated transform measured image, and then obtained through the cosine transform the image of a feature vector under test, using the feature vector and the key function by 1241 to extract the watermark .)

matlab实用程序，可以直接拷贝复制,主要是图像的处理(matlab code for use)

说明：  E5去白噪声、高斯白噪声分析的源程序，用来处理做分析前的数据(E5 to white noise, Gaussian white noise analysis of the source)

Matlab人工免疫算法的利用,希望对大家有帮助(Matlab using artificial immune algorithm, we want to help)

Truss optimization using genetic alorithm in matlab under evolutionary computing.

1D standard Kalman Filter (Simulink model and program

说明：  这是一个利用FFT内插法求解载波频率问题，精确度很高。(This is to solve a carrier frequency problems using interpolation FFT.It is high degree of precision.)

sweb a pedestrian MATLAB web session starter