train.m

是一个应用matlab编写的基于pca读取人脸的人脸识别和人脸检测软件

function [A ,mx ,facey]=train();%训练

%取出库中人脸堆叠
L=200;
startx=38;
endx=106;
starty=33;
endy=96;
x=endx-startx;
y=endy-starty;
a=30;
b=20;
facecol=zeros(a*b,L);
for i=1:L
    facecol(:,i)=getFacePile(getpicture(i));
end
%Average
mx=mean(facecol')';
%均差
facex=zeros(a*b,L);
for i=1:L
    facex(:,i)=facecol(:,i)-mx;
end
%协方差
Cf=facex*facex'/L;
%特征向量
[V D]=eig(Cf);
%得到核矩阵
A=V';
%特征脸
facey=A*facex;