matlab窗口调用摄像头
这里介绍使用guide创建图形界面，调用摄像头并捕获图像的方法。
操作方法
- 01
首先确定安装好了摄像头的驱动，打开“应用程序”>“image acquisition”查看
- 02
新建图形用户界面：“新建”>“图形用户界面”
- 03
从左侧选择控件，添加到面板
- 04
双击空间进行属性设置，“string”为显示名称，“tag”为id。将两个axes的“visable“属性设置为”off“
- 05
更改”.m“文件： function varargout = untitled1(varargin) % UNTITLED1 MATLAB code for untitled1.fig % UNTITLED1, by itself, creates a new UNTITLED1 or raises the existing % singleton*. % % H = UNTITLED1 returns the handle to a new UNTITLED1 or the handle to % the existing singleton*. % % UNTITLED1('CALLBACK',hObject,eventData,handles,...) calls the local % function named CALLBACK in UNTITLED1.M with the given input arguments. % % UNTITLED1('Property','Value',...) creates a new UNTITLED1 or raises the % existing singleton*. Starting from the left, property value pairs are % applied to the GUI before untitled1_OpeningFcn gets called. An % unrecognized property name or invalid value makes property application % stop. All inputs are passed to untitled1_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 untitled1 % Last Modified by GUIDE v2.5 12-Mar-2015 20:53:43 % Begin initialization code - DO NOT EDIT gui_Singleton = 1; gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @untitled1_OpeningFcn, ... 'gui_OutputFcn', @untitled1_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 untitled1 is made visible. function untitled1_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 untitled1 (see VARARGIN) % Choose default command line output for untitled1 handles.output = hObject; % Update handles structure guidata(hObject, handles); % UIWAIT makes untitled1 wait for user response (see UIRESUME) % uiwait(handles.figure1); % --- Outputs from this function are returned to the command line. function varargout = untitled1_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; global vid; vid = videoinput('winvideo'); %set(vid,'ReturnedColorSpace','grayscale'); function pushbutton1_Callback(hObject, eventdata, handles) axes(handles.axes1); global vid; vidRes = vid.VideoResolution; nBands = vid.NumberOfBands; hImage = image( zeros(vidRes(2), vidRes(1), nBands) ); preview(vid, hImage); % --- 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) axes(handles.axes2); global vid; f=getsnapshot(vid); imshow(f);
- 06
点击运行，单击”preview“进行预览，单击”snapshot“捕获图像