error when starting the camera of this gui code

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

% Last Modified by GUIDE v2.5 10-Sep-2018 11:35:14

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

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

% Update handles structure guidata(hObject, handles);

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

% --- Outputs from this function are returned to the command line. function varargout = gui_face_detect_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 startcam. function startcam_Callback(hObject, eventdata, handles) % hObject handle to startcam (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %function start_camera global vid global Im2 vid = videoinput('winvideo',2); triggerconfig(vid,'manual'); set(vid,'FramePerTrigger',1); set(vid,'TriggerRepeat',Inf); set(vid,'ReturnedColorSpace','rgb'); start(vid); faceDetector = vision.CascadeObjectDetector(); while (1) try trigger(vid); temp = getdata(vid,1); axes(handles.axes1); imshow(temp); g = getsnapshot(vid); data = g; videoFrame = data; bb = step(faceDetector, videoFrame); [Im1,Im2] = separate(data,bb); axes(handles.axes2); imshow(Im2); pause(2); catch break; end end

% --- Executes on button press in capture_image. function capture_image_Callback(hObject, eventdata, handles) % hObject handle to capture_image (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %function capture_face global vid; global Im2; try stop(vid); end faceI = Im2; axes(handles.axes3); imshow(faceI)

% --- Executes on button press in train. function train_Callback(hObject, eventdata, handles) % hObject handle to train (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %function training global Im2 global className; try load dbs; feature = lbp_sir(rgb2gray(Im2)); dbs = [dbs; features]; f = find(classes == className); f = length(f); f = f + 1; fname = strcat(num2str(className),'_',num2str(f),'.png'); imwrite(Im2,fname,'png'); classes = [classes; className]; save dbs dbs classes; catch dbs = []; classes = []; feature = lbp_sir(rgb2gray(Im2)); dbs = [dbs; feature]; classes = [classes; className]; fname = strcat(num2str(className),'_',num2str(1),'.png'); imwrite(Im2,fname,'png'); save dbs dbs classes; end axes(handles.axes3); plot(feature);

% --- Executes on button press in test. function test_Callback(hObject, eventdata, handles) % hObject handle to test (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %function testing global vid; global Im2; stop(vid); %% extract face rectangle faceI = Im2; axes(handles.axes3); imshow(faceI); %recognize load dbs db = dir('*.png'); n = ceil(sqrt(length(db))); F = []; for(i = 1 : length(db)) im = imread(db(i).name); im = imresize(im,[128 128]); f = lbp_sir(rgb2gray(im)); F = [F;f]; title(num2str(classes(i))); end size(Im2) Im2 = imresize(Im2,[128 128]); ftest = lbp_sir(rgb2gray(Im2)); for(i = 1 : length(db)) D(i,:) = abs(F(i,:) - ftest); end score = Inf; match = -1; for(i = 1 : length(db)) s = sum(D(i,:)); if(s < score) match = i; score = s; end end match detected = classes(match); fname = db(match).name; axes(handles.axes3); imshow(imread(fname)); title(strcat('detected class is:',num2str(detected)));

% --- 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)