Importing 4 jpg files to face_GUI

I am trying to capture 4 jpg images to a GUI. The picture is captured and opens in Matlab as subplot. How to modify it to open in my face_GUI?

function varargout = face_GUI(varargin)

% FACE_GUI M-file for face_GUI.fig
%      FACE_GUI, by itself, creates a new FACE_GUI or raises the existing
%      singleton*.
%
%      H = FACE_GUI returns the handle to a new FACE_GUI or the handle to
%      the existing singleton*.
%
%      FACE_GUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in FACE_GUI.M with the given input arguments.
%
%      FACE_GUI('Property','Value',...) creates a new FACE_GUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before face_GUI_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to face_GUI_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help face_GUI

% Last Modified by GUIDE v2.5 24-Mar-2013 10:57:27

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @face_GUI_OpeningFcn, ...
                   'gui_OutputFcn',  @face_GUI_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT

% --- Executes just before face_GUI is made visible.
function face_GUI_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to face_GUI (see VARARGIN)

% Choose default command line output for face_GUI
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes face_GUI wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = face_GUI_OutputFcn(hObject, eventdata, handles) 
% 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;

% --- 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)
varargout{1} = handles.output;
m=4;
s=[];
figure(1);
prefix_image='t';
fileformat='.jpg';
for i=1:m
 image1= imread(strcat(prefix_image,num2str(i),fileformat));
 %figure(i);

   img=rgb2gray(image1);
   %whos

   subplot(2,2,i);
     imshow(img);

   [iraw icol]=size(img);
   temp=reshape(img,iraw*icol,1);
      s=[s temp];

   end
  %part2 normalizt the images to reduce lighting conditions
  for i=1:m
   temp=double(s(:,i));
   m2=mean(temp);
   st2=std(temp);
   s(:,i)=((temp-m2)*60/st2)+120;

end

% --- 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)
varargout{1} = handles.output;
m=4;
s=[];
figure(2);
prefix_image='t';
fileformat='.jpg';
for i=1:m
 image1= imread(strcat(prefix_image,num2str(i),fileformat));
 %figure(i);
 img=rgb2gray(image1);
 %whos

   subplot(2,2,i);
    imshow(img);
   [iraw icol]=size(img);
   temp=reshape(img',iraw*icol,1);

     s=[s temp];

end
%part2 normalizt the images to reduce lighting conditions
for i=1:m
 temp=double(s(:,i));
 m2=mean(temp);
 st2=std(temp);
 s(:,i)=(temp-m2)*60/st2+120;
end

for i=1:m
    img=reshape(s(:,i),icol,iraw);
    img=img';
    subplot(2,2,i);
  imshow(img);
end
m2=mean(s,2);
tmimg=uint8(m2);
img=reshape(tmimg,icol,iraw);
img=img';

% --- 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)
varargout{1} = handles.output;
m=4;
s=[];
figure(3);
prefix_image='t';
fileformat='.jpg';
for i=1:m
 image1= imread(strcat(prefix_image,num2str(i),fileformat));
 %figure(i);
 img=rgb2gray(image1);
 %whos

   subplot(2,2,i);
    imshow(img);
   [iraw icol]=size(img);
   temp=reshape(img',iraw*icol,1);

     s=[s temp];

end
%part2 normalizt the images to reduce lighting conditions
for i=1:m
 temp=double(s(:,i));
 m2=mean(temp);
 st2=std(temp);
 s(:,i)=(temp-m2)*60/st2+120;
end

for i=1:m
    img=reshape(s(:,i),icol,iraw);
    img=img';
    subplot(2,2,i);
  imshow(img);
end
m2=mean(s,2);
tmimg=uint8(m2);
img=reshape(tmimg,icol,iraw);
img=img';

imshow(img);
dbx=[];
for i=1:m
    temp=double(s(:,i));
    dbx=[dbx temp];
end
A=dbx';
L=A*A';
[vv dd]=eig(L);
v=[];
d=[];
for i=1:size(vv,2)
    if (dd(i,i)>1.0e-4)
        v=[v vv(:,i)];
        d=[d dd(i,i)];
    end
end
%sort, will return an ascending sequence
[B index]=sort(d);
ind=zeros(size(index));
dtemp=zeros(size(index));
vtemp=zeros(size(v));
len=length(index);
for i=1:len
dtemp(i)=B(len+1-i);
ind(i)=len+1-index(i);
vtemp(:,ind(i))=v(:,i);
end
d=dtemp;
v=vtemp;

%Normalization of eigenvectors
for i=1:size(v,2) %access each column
kk=v(:,i);
temp=sqrt(sum(kk.^2));
v(:,i)=v(:,i)./temp;
end

%Eigenvectors of C matrix
u=[];
for i=1:size(v,2)
temp=sqrt(d(i));
u=[u (dbx*v(:,i))./temp];
end

%Normalization of eigenvectors
for i=1:size(u,2)
kk=u(:,i);
temp=sqrt(sum(kk.^2));
u(:,i)=u(:,i)./temp;
end

% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
varargout{1} = handles.output;
m=4;
s=[];
figure(4);
prefix_image='t';
fileformat='.jpg';
for i=1:m
 image1= imread(strcat(prefix_image,num2str(i),fileformat));
 %figure(i);
 img=rgb2gray(image1);
 %whos

   subplot(2,2,i);
    imshow(img);
   [iraw icol]=size(img);
   temp=reshape(img',iraw*icol,1);

     s=[s temp];

end
%part2 normalizt the images to reduce lighting conditions
for i=1:m
 temp=double(s(:,i));
 m2=mean(temp);
 st2=std(temp);
 s(:,i)=(temp-m2)*60/st2+120;
end

for i=1:m
    img=reshape(s(:,i),icol,iraw);
    img=img';
    subplot(2,2,i);
  imshow(img);
end
m2=mean(s,2);
tmimg=uint8(m2);
img=reshape(tmimg,icol,iraw);
img=img';

imshow(img);
dbx=[];
for i=1:m
    temp=double(s(:,i));
    dbx=[dbx temp];
end
A=dbx';
L=A*A';
[vv dd]=eig(L);
v=[];
d=[];
for i=1:size(vv,2)
    if (dd(i,i)>1.0e-4)
        v=[v vv(:,i)];
        d=[d dd(i,i)];
    end
end
%sort, will return an ascending sequence
[B index]=sort(d);
ind=zeros(size(index));
dtemp=zeros(size(index));
vtemp=zeros(size(v));
len=length(index);
for i=1:len
dtemp(i)=B(len+1-i);
ind(i)=len+1-index(i);
vtemp(:,ind(i))=v(:,i);
end
d=dtemp;
v=vtemp;

%Normalization of eigenvectors
for i=1:size(v,2) %access each column
kk=v(:,i);
temp=sqrt(sum(kk.^2));
v(:,i)=v(:,i)./temp;
end

%Eigenvectors of C matrix
u=[];
for i=1:size(v,2)
temp=sqrt(d(i));
u=[u (dbx*v(:,i))./temp];
end

%Normalization of eigenvectors
for i=1:size(u,2)
kk=u(:,i);
temp=sqrt(sum(kk.^2));
u(:,i)=u(:,i)./temp;
end

% show eigenfaces

for i=1:size(u,2)
img=reshape(u(:,i),icol,iraw);
img=img';
img=histeq(img,255);
subplot(2,2,i);
imshow(img);
drawnow;
end
%find weights
omega = [];
for h=1:size(dbx,2)
WW=[]; 
for i=1:size(u,2)
t = u(:,i)'; 
WeightOfImage = dot(t,dbx(:,h)');
WW = [WW; WeightOfImage];
end
omega = [omega WW];
end

% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, ~, handles)
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% --- Executes on button press in pushbutton6.
function pushbutton6_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% --- Executes on selection change in popup.
function popup_Callback(hObject, eventdata, handles)
% hObject    handle to popup (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

           % Set current data to the selected data set.

% Hints: contents = cellstr(get(hObject,'String')) returns popup contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popup

% --- Executes during object creation, after setting all properties.
function popup_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popup (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called
% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor','white');
end

% --- Executes on key press with focus on popup and none of its controls.
function popup_KeyPressFcn(hObject, eventdata, handles)
% hObject    handle to popup (see GCBO)
% eventdata  structure with the following fields (see UICONTROL)
%  Key: name of the key that was pressed, in lower case
%  Character: character interpretation of the key(s) that was pressed
%  Modifier: name(s) of the modifier key(s) (i.e., control, shift) pressed
% handles    structure with handles and user data (see GUIDATA)

Answer 1

[Walter Roberson]

Your four pushbuttons have in them calls such as

figure(3)

Change that to

figure(handles.output)

to have the graphics that would normally go to figure 1, 2, 3, or 4 go instead to Face_GUI .