How to create webcam in MATLAB

How to create webcam in MATLAB

classdef app2 < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure                  matlab.ui.Figure
        UIAxes                    matlab.ui.control.UIAxes
        TabGroup                  matlab.ui.container.TabGroup
        ManualmodeTab             matlab.ui.container.Tab
        ClickimageButton          matlab.ui.control.Button
        BrustmodeTab              matlab.ui.container.Tab
        CameraInputDropDownLabel  matlab.ui.control.Label
        CameraInputDropDown       matlab.ui.control.DropDown
    end

https://amzn.to/2SotVlZ
 
    properties (Access = private)
        numOfPictures = 5;
        waitTime = 1;
        mode = 1;
        vidObj;
        videoInputNumber = 1;
    end
 

    methods (Access = private)

        % Code that executes after component creation
        function startupFcn(app)
        mkdir "Session Data"
       app.vidObj = videoinput ('winvideo', app.videoInputNumber);
        preview (app.vidObj);
        end

        % Button pushed function: ClickimageButton
        function ClickimageButtonPushed(app, event)
            img = clickSingleImage (app.vidObj);
            imshow (ycbcr2rgb (img), 'Parent' , app.UIAxes);
        end

        % Value changed function: CameraInputDropDown
        function CameraInputDropDownValueChanged(app, event)
            app.videoInputNumber = app.CameraInputDropDown.Value;
            delete(app.vidObj)
            app.vidObj = videoinput ('winvideo', app.videoInputNumber);
            preview (app.vidObj);
         
        end
    end

    % App initialization and construction
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure
            app.UIFigure = uifigure;
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'UI Figure';

            % Create UIAxes
            app.UIAxes = uiaxes(app.UIFigure);
            title(app.UIAxes, 'Title')
            xlabel(app.UIAxes, 'X')
            ylabel(app.UIAxes, 'Y')
            app.UIAxes.Position = [206 153 168 146];

            % Create TabGroup
            app.TabGroup = uitabgroup(app.UIFigure);
            app.TabGroup.Position = [12 165 177 122];

            % Create ManualmodeTab
            app.ManualmodeTab = uitab(app.TabGroup);
            app.ManualmodeTab.Title = 'Manual mode';

            % Create ClickimageButton
            app.ClickimageButton = uibutton(app.ManualmodeTab, 'push');
            app.ClickimageButton.ButtonPushedFcn = createCallbackFcn(app, @ClickimageButtonPushed, true);
            app.ClickimageButton.Position = [1 50 100 22];
            app.ClickimageButton.Text = 'Click image';

            % Create BrustmodeTab
            app.BrustmodeTab = uitab(app.TabGroup);
            app.BrustmodeTab.Title = 'Brust mode';

            % Create CameraInputDropDownLabel
            app.CameraInputDropDownLabel = uilabel(app.UIFigure);
            app.CameraInputDropDownLabel.HorizontalAlignment = 'right';
            app.CameraInputDropDownLabel.Position = [-5 401 78 22];
            app.CameraInputDropDownLabel.Text = 'Camera Input';

            % Create CameraInputDropDown
            app.CameraInputDropDown = uidropdown(app.UIFigure);
            app.CameraInputDropDown.Items = {'1', '2'};
            app.CameraInputDropDown.ValueChangedFcn = createCallbackFcn(app, @CameraInputDropDownValueChanged, true);
            app.CameraInputDropDown.Position = [88 401 100 22];
            app.CameraInputDropDown.Value = '1';
        end
    end

    methods (Access = public)

        % Construct app
        function app = app2

            % Create and configure components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            % Execute the startup function
            runStartupFcn(app, @startupFcn)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end