1、首先确定安装好了摄像头的驱动，打开“应用程序”>“image acquisition”查看
2、新建图形用户界面：“新建”>“图形用户界面”
3、从左侧选择控件，添加到面板
4、双击空间进行属性设置，“string”为显示名称，“tag”为id。将两个axes的“vi衡痕贤伎sable“属性设置为”off“
5、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 EDITgui_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});endif 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 untitled1handles.output = hObject;% Update handles structureguidata(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 structurevarargout{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);
6、点击运行，单击”preview“进行预览，单击”snapshot“捕获图像
