Face , Nose , Eyes Detection (Complete Project Explanation ) with code| Image Processing with MATLAB

Code:

function varargout = Demo3(varargin)

% DEMO3 MATLAB code for Demo3.fig

%      DEMO3, by itself, creates a new DEMO3 or raises the existing

%      singleton*.

%

%      H = DEMO3 returns the handle to a new DEMO3 or the handle to

%      the existing singleton*.

%

%      DEMO3('CALLBACK',hObject,eventData,handles,...) calls the local

%      function named CALLBACK in DEMO3.M with the given input arguments.

%

%      DEMO3('Property','Value',...) creates a new DEMO3 or raises the

%      existing singleton*.  Starting from the left, property value pairs are

%      applied to the GUI before Demo3_OpeningFcn gets called.  An

%      unrecognized property name or invalid value makes property application

%      stop.  All inputs are passed to Demo3_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 Demo3

% Last Modified by GUIDE v2.5 07-Sep-2020 11:09:27

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @Demo3_OpeningFcn, ...

                   'gui_OutputFcn',  @Demo3_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 Demo3 is made visible.

function Demo3_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 Demo3 (see VARARGIN)

% Choose default command line output for Demo3

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes Demo3 wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = Demo3_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 Start_Webcam.

function Start_Webcam_Callback(hObject, eventdata, handles)

% hObject    handle to Start_Webcam (see GCBO)

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

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

global c;

global loopFlag;

loopFlag = true;

c=webcam;

 while true

     if(loopFlag ==false)

         break;

     else

    e=c.snapshot;

     axes(handles.axes1);

 imshow(e);

 drawnow;

     end

 end

% --- Executes on button press in Face_Detection.

function Face_Detection_Callback(hObject, eventdata, handles)

% hObject    handle to Face_Detection (see GCBO)

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

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

FDetect=vision.CascadeObjectDetector;

global loopFlag;

global c ;

while true

     if(loopFlag ==false)

         break;

     else

    e=c.snapshot;

    BB=step(FDetect,e);

    imshow(e);

    hold on;

    for i=1:size(BB,1)

rectangle('Position',BB(i,:),'Linewidth',5,'LineStyle','-','EdgeColor','r');

end

hold off;

    drawnow;

     end

end

% --- Executes on button press in Eye_Detection.

function Eye_Detection_Callback(hObject, eventdata, handles)

% hObject    handle to Eye_Detection (see GCBO)

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

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

FDetect=vision.CascadeObjectDetector('EyePairBig','MergeThreshold',50);

global loopFlag;

global c ;

while true

     if(loopFlag ==false)

         break;

     else

    e=c.snapshot;

    BB=step(FDetect,e);

    imshow(e);

    hold on;

    for i=1:size(BB,1)

rectangle('Position',BB(i,:),'Linewidth',5,'LineStyle','-','EdgeColor','r');

end

hold off;

    drawnow;

     end

end

% --- Executes on button press in Nose_Detection.

function Nose_Detection_Callback(hObject, eventdata, handles)

% hObject    handle to Nose_Detection (see GCBO)

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

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

global loopFlag;

global c ;

FDetect=vision.CascadeObjectDetector('Nose','MergeThreshold',30);

while true

     if(loopFlag ==false)

         break;

     else

    e=c.snapshot;

    BB=step(FDetect,e);

    imshow(e);

    hold on;

    for i=1:size(BB,1)

rectangle('Position',BB(i,:),'Linewidth',5,'LineStyle','-','EdgeColor','r');

end

hold off;

    drawnow;

     end

end

% --- Executes on button press in Close_Webcam.

function Close_Webcam_Callback(hObject, eventdata, handles)

% hObject    handle to Close_Webcam (see GCBO)

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

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

global loopFlag;

loopFlag=false;

clear global c;

axes(handles.axes1);

imshow('Thank.JPG');

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