[chapter 07 face QR code recognition based on principal component analysis matlab deep learning practical case]

Face two-dimensional code recognition based on principal component analysis MATLAB In depth learning practical cases
Face database

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The analysis is as follows ：

Master file

function varargout = MainForm(varargin)
% MAINFORM MATLAB code for MainForm.fig
%      MAINFORM, by itself, creates a new MAINFORM or raises the existing
%      singleton*.
%
%      H = MAINFORM returns the handle to a new MAINFORM or the handle to
%      the existing singleton*.
%
%      MAINFORM('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in MAINFORM.M with the given input arguments.
%
%      MAINFORM('Property','Value',...) creates a new MAINFORM or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before MainForm_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to MainForm_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 MainForm

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
    'gui_Singleton',  gui_Singleton, ...
    'gui_OpeningFcn', @MainForm_OpeningFcn, ...
    'gui_OutputFcn',  @MainForm_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 MainForm is made visible.
function MainForm_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 MainForm (see VARARGIN)

% Choose default command line output for MainForm
handles.output = hObject;
clc;
set(handles.axes1, 'XTick', [], 'YTick', [], ...
    'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], 'Box', 'On',...
    'xlim', [-1 1], 'ylim', [-1 1]);
set(handles.axes2, 'XTick', [], 'YTick', [], ...
    'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], 'Box', 'On',...
    'xlim', [-1 1], 'ylim', [-1 1]);
set(handles.axes3, 'XTick', [], 'YTick', [], ...
    'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], 'Box', 'On',...
    'xlim', [-1 1], 'ylim', [-1 1]);
handles.Ims = 0;
handles.c = 0;
handles.Im = 0;
handles.f = 0;
handles.Img = 0;
% Update handles structure
guidata(hObject, handles);

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


% --- Outputs from this function are returned to the command line.
function varargout = MainForm_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;



function edit1_Callback(hObject, eventdata, handles)
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'String') returns contents of edit1 as text
%        str2double(get(hObject,'String')) returns contents of edit1 as a double


% --- Executes during object creation, after setting all properties.
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: edit 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 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)
filePath = OpenImageFile();
if filePath == 0
    return;
end
Img = imread(filePath);
if ndims(Img) == 3
    Img = rgb2gray(Img);
end
sz = size(Img);
sz0 = [112 92];
if ~isequal(sz, sz0);
    Img = imresize(Img, sz0, 'bilinear');
end
% wh = 600;
% if sz(1) > wh
%     rate = wh/sz(1);
%     Img = imresize(Img, rate, 'bilinear');
% end
%  Show 
imshow(Img, [], 'Parent', handles.axes1);
handles.Img = Img;
handles.sz = size(Img);
guidata(hObject, handles);


% --- 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)
if isequal(handles.Img, 0)
    return;
end
f = GetFaceVector(handles.Img);
f = f(1:round(length(f)*0.9));
handles.f = f;
guidata(hObject, handles);
msgbox(' Dimension reduction succeeded ！', ' Prompt information ');


% --- 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)
if isequal(handles.f, 0)
    return;
end
Im = QrGen(handles.f);
%  Show 
imshow(Im, [], 'Parent', handles.axes2);
handles.Im = Im;
guidata(hObject, handles);


% --- 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)
if isequal(handles.Im, 0)
    return;
end
c = QrDen(handles.Im);
set(handles.edit1, 'String', c);
handles.c = c;
guidata(hObject, handles);


% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, 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)
if isequal(handles.c, 0)
    return;
end
Ims = FaceRec(handles.c, handles.sz);
%  Show 
imshow(Ims, [], 'Parent', handles.axes3);
handles.Ims = Ims;
guidata(hObject, handles);


% --- 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)
%  Clean up the workspace 
axes(handles.axes1); cla reset;
axes(handles.axes2); cla reset;
axes(handles.axes3); cla reset;
set(handles.axes1, 'XTick', [], 'YTick', [], ...
    'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], 'Box', 'On');
set(handles.axes2, 'XTick', [], 'YTick', [], ...
    'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], 'Box', 'On');
set(handles.axes3, 'XTick', [], 'YTick', [], ...
    'XTickLabel', '', 'YTickLabel', '', 'Color', [0.7020 0.7804 1.0000], 'Box', 'On');
set(handles.edit1, 'String', '');


% --- Executes on button press in pushbutton7.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
choice = questdlg(' Are you sure you want to exit the system ?', ...
    ' sign out ', ...
    ' determine ',' Cancel ',' Cancel ');
switch choice
    case ' determine '
        close;
    case ' Cancel '
        return;
end

The application effect is as shown in the figure