nagakami

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 )

LU分解，基于MATLAB开发，求上三角函数和下三角函数(LU decomposition, based on the MATLAB development, and lower demand on the trigonometric functions trigonometric functions)

日常开支记录器,能够满足日常的记账需求，很不错的小软件(Daily expenses recorder, able to meet the daily accounting needs of a very good small software)

this is buck inverter with pwm control

这个matlab代码是实现基于最小二乘算法的常数模算法。较最小均方误差算法，该算法收敛速度较快。(Matlab code to achieve the constant modulus algorithm based on least squares algorithm. Than the minimum mean square error algorithm, the algorithm converges faster.)

斜磁化无限延伸程序使用很方便，matlab直接导入，直接出结果，图很漂亮(Unlimited extension of deep oblique magnetized magnetic plate body Abnormal Program)

本文说明 vb与matlab连接的教程(This article explains to connect vb and matlab tutorial)

说明：  可以通过输入刚度或阻尼数组，生成刚度（阻尼）矩阵。(The stiffness (damping) matrix can be generated by input stiffness or damping arrays.)

说明：  matlab学习例程，自动增益控制实现例程，方便初学者学习。(Matlab learning routines, automatic gain control routines, easy for beginners to learn.)

matlab源代码，包括基本编程，数学运算，绘图，数据分析等(matlab source code, including basic programming, mathematics, drawing and data analysis)