6.5 Codes and library  (Page 2/2)

% varargout cell array for returning output args (see VARARGOUT);

% hObject handle to figure

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure

varargout{1} = handles.output;

%The following three functions are about the functionalities of

%the 3 buttons of our interface.

%Button 1 let the user to choose the input file.

%Then, it change the input file to gray picture for further

%use.

% --- Executes on button press in pushbutton1.

function pushbutton1_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton1 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

global im;

%get the path of the file, chosen by user

[filename,pathname]=uigetfile({'.bmp'},'choose a file');

str=[pathname,filename];

%read it

im=imread(str);

%change this picture to gray and show it to user in specific

%frame.

im=rgb2gray(im);

axes(handles.axes1);

imshow(im);

%

% --- Executes on button press in pushbutton2.

function pushbutton2_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton2 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

global im;

%get pictures in our library, change them to gray and store

%them to imgdata

imgdata=[];

for i=1:2

for j=1:5

a=imread(strcat('C:\NewLib\P',num2str(i),'\',num2str(j),'.bmp'));

%a=rgb2gray(a);

%subplot(ceil(sqrt(5)),ceil(sqrt(5)),j)

%imshow(a)

%if i==2

% title('Training set','fontsize',18)

%end

%drawnow;

%standarize the size of each image.

b=a(1:250*360);

b=double(b);

imgdata=[imgdata;b];

%imgdata is a m*n matrix. Each row of it stores an image.

end

end

%get the mean image of images in imgdata

imgdata=imgdata';

imgmean=mean(imgdata,2);

%get minus, a m*n matrix. Each row of it stores

%(each image)-(mean image)

for i=1:10

minus(:,i)=imgdata(:,i)-imgmean;

end

%conve is a m*m matrix

%get coefficients from convex for later use.

convex=minus'*minus;

[coeff,latent,explained]=pcacov(convex');

%get 95% power

i=1;

proportion=0;

while(proportion<95)

proportion=proportion+explained(i);

i=i+1;

end

p=i-1;

i=1;

%make a coordinate system for the traits of ears.

while(i<=p&&latent(i)>0)

base(:,i)=latent(i)^(-1/2)*minus*coeff(:,i);

i=i+1;

end

reference=base'*minus;

%test and show

a=im;

b=a(1:90000);

b=double(b);

b=b';

object=base'*(b-imgmean);

distance=10000;

for k=1:10

temp=norm(object-reference(:,k));

if(distance>temp)

which=k;

distance=temp;

end

end

if (which==10)

title('the person is not in the lib');

end

num1=ceil(which/5);

num2=mod(which,5);

if(num2==0)

num2=5;

end

I=imread(strcat('C:\NewLib\P',num2str(num1),'\',num2str(num2),'.bmp'));

axes(handles.axes2);

switch num1

case 1

imshow(I);

title('this is Gino');

case 2

imshow(I);

title('this is Mark ');

end

%button 3 just close the program.

% --- Executes on button press in pushbutton3.

function pushbutton3_Callback(hObject, eventdata, handles)

% hObject handle to pushbutton3 (see GCBO)

% eventdata reserved - to be defined in a future version of MATLAB

% handles structure with handles and user data (see GUIDATA)

close(gcf);