Matlab-compute

把matlab计算后的数据保存成obj格式的文件，能保存点和点点之间的连接关系，即obj格式的中的v和f(Obj format to save data into files that can save the points and little connection between the relationship that the v in obj format and f)

will be very useful for those who need code for lsb steganography

M=63 J=(M-1)/2 Wp=0.5*pi Ws=0.6*pi Np=100 Ns=100 weightp=1 weights=100 通带和阻带的加权系数 WpN=linspace(0,Wp,Np) WsN=linspace(Ws,pi-0.05,Ns) Wm=[WpN WsN] p=[ones(1,50),ones(1,50)/2] d=[p,zeros(1,Ns)] W=diag([weightp*ones(1,Np),weights*ones(1,Ns)]) C=cos(Wm*[0:J]) Q=diag(cos(Wm*0.5)) g=(W*Q*C)(W*d) g=g h=(g(J:-1:2)+g(J+1:-1:3))/4 h=[g(J+1)/4 h g(1)*0.5+g(2)/4] h=[h fliplr(h)] W=linspace(0,pi-0.1,512) H=freqz(h,1,W) plot(W/pi,20*log10(abs(H))) (filter design)

This program show the effect of Gaussian filter. The output are four subfigures shown in the same figure:

多于22导位的EEG信号提取及功率谱分析，归一化处理(EEG selection and power spectrum analysis)

边界fisher判别，用于人脸识别，在yale库取得比较好的效果(Boundary fisher discriminant for face recognition, in the library to obtain better results yale)

Code in Matlab to find the wave and the radius of fiber.

由一个隐马尔可夫模型产生一个观测值序列和一个状态序列(Consists of a hidden Markov model to generate a sequence of observations and a state sequence)

主成分分析代码， 可以用于图像压缩等等，也叫PCAH或者KL变换(PCA or K_L transfer)

虹膜图像滤波，高斯滤波器，低通滤波器，巴特沃斯滤波器等(Iris image filtering, Gaussian filter, low pass filter, Butterworth filter, etc.)