function varargout = MyUSBShow(varargin)
% MYUSBSHOW MATLAB code for MyUSBShow.fig
% MYUSBSHOW, by itself, creates a new MYUSBSHOW or raises the existing
% singleton*.
%
% H = MYUSBSHOW returns the handle to a new MYUSBSHOW or the handle to
% the existing singleton*.
%
% MYUSBSHOW('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in MYUSBSHOW.M with the given input arguments.
%
% MYUSBSHOW('Property','Value',...) creates a new MYUSBSHOW or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before MyUSBShow_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to MyUSBShow_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 MyUSBShow
% Last Modified by GUIDE v2.5 13-Sep-2018 20:22:37
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @MyUSBShow_OpeningFcn, ...
'gui_OutputFcn', @MyUSBShow_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 MyUSBShow is made visible.
function MyUSBShow_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 MyUSBShow (see VARARGIN)
global cap isstop numFrame
cap = webcam(1);
isstop = false;
numFrame = 1;
% Choose default command line output for MyUSBShow
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes MyUSBShow wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = MyUSBShow_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 pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
global cap isstop numFrame
if isstop
isstop = false;
else
isstop = true;
end
axes(handles.axes1);
ts1 = 0;
while exist('isstop','var')&&isstop
numFrame = numFrame+1;
[frame,ts] = snapshot(cap);
frameRate = 1./(ts-ts1);
ts1 = ts;
showText = sprintf('frameRate:%d\n Frame:%d\n',round(frameRate),numFrame);
draw = insertText(frame,[10,20],showText,'FontSize',20);
imshow(draw);
drawnow;
end
% --- Executes during object deletion, before destroying properties.
function figure1_DeleteFcn(hObject, eventdata, handles)
% hObject handle to figure1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% 关闭窗口的回调函数
clear all;
