builddatabase.m

基于小波的人脸识别算法的matlab实现

function BuildDatabase(imagedir);
info = imfinfo(strcat(imagedir,'0001.bmp'),'bmp');
load('wavelet.dat','-mat');
%a=columns(W);
%建库；
step=1;
for num=1:1
    %读图；得到I；
    I = rgb2gray(imread(strcat(imagedir,sprintf('%04d',num*2-1),'.bmp'),'bmp'));
    figure;
    imshow(I,256);
    %卷积，计算变换结果WI；
    for v=1:5
        for u=1:4:8
            %得到对应某个k的Wk；
            for x1=1:info.Width
                for x2=1:info.Height
                    Wk(x1,x2)=W(v,u,x1,x2);
                end
            end
            %figure;
            %WkReal=real(Wk);
            %xa1=[1:1:info.Width];
            %xa2=[1:1:info.Height];
            %surf(xa1,xa2,WkReal,'FaceColor','interp',...
            %   'EdgeColor','none',...
            %    'FaceLighting','phong');
            %surf(WkReal);
            %mesh(WkReal);
            %计算变换结果WIk；
            WIk=CalculateWIk(I,Wk,info.Width,info.Height,step);
            for x1=1:info.Width/step
                for x2=1:info.Height/step
                    WI(num,v,u,x1,x2)=WIk(x1,x2);
                end
            end
            figure;
            maxgray=max(max(WIk));
            WIk=WIk/maxgray;
            imshow(WIk);
        end
    end
end
%%save('d:\database.dat','WI')