ofdm

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 )

将一张图片由直角坐标转换为极坐标，并且分别显示图片(the trans of coordination)

LEARN ABOUT MEASURES OF LENTGT

微电源并网，实现分布式电源构成的微电网,用于微电网仿真(Micro power grid, the realization of distributed power of micro grid，For micro power grid simulation)

Signal estimation using matlab

research paper on the development of mppt on varies artificial intelli algorithms

matlab 代码，主要用于计算一数据矩阵的标准差，方差，变异系数，话三维曲面图(matlab code, data matrix used to calculate a standard deviation, variance, coefficient of variation, then D surface chart)

Nonlinear Homework Problem - Shahrood university- session 22

模式识别课程作业，pca和kpca，以及一个人脸可。其中kpca的核函数是多项式。(Pattern Recognition course assignments, pca and kpca, and a person can face. Where the kernel function is polynomial kpca.)

基于matlab的车牌定位、字符分割和字符识别(car population in matlab)