checkblock

采用改进的pso算法实现实现bspline曲线拟合，malab语言。(Pso algorithm using the improved implementation bspline curve fitting, malab language.)

说明：  适用Otsu方法做阈值分析。阈值决策的依据是最大类间方差，这种方法的依据就是类间方差，本程序仅仅适用与二分类问题。(thresholding algorithm using Otsu)

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 )

对lena.map先分块处理，然后做cs变换，观测矩阵用随机高斯矩阵，重构算法用l1算法(On lena.map first block processed, and then do cs transform, random Gaussian matrix with the observation matrix, reconstruction algorithm algorithm using l1)

CODE DE RESOLUTION DE L EQUATION D HELMOTZ EN FORMULATION INTEGRALE 2D Problème Fréquentiel Intérieur avec Condition en flux (Neumann)

lms算法，对ADC进行数字后台校正的算法(lms algorithm, the ADC digital background correction algorithm)

LMS的算法自适应均衡性能分析，很好的学习资料(Adaptive LMS algorithm balanced performance analysis )

用matlab程序编写的一个三维雷达跟踪粒子滤波器，超强(using Matlab procedures prepared by the three 3D radar tracking a particle filter, super)

vebyk is a flexible and user-friendly matlab-program, which performs ordinary kriging and can be easily adapted to other kriging methods.

Z-Chirp Transfor Matlab Code