function varargout = f_8_2(varargin)
% F_8_2 MATLAB code for f_8_2.fig
%      F_8_2, by itself, creates a new F_8_2 or raises the existing
%      singleton*.
%
%      H = F_8_2 returns the handle to a new F_8_2 or the handle to
%      the existing singleton*.
%
%      F_8_2('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in F_8_2.M with the given input arguments.
%
%      F_8_2('Property','Value',...) creates a new F_8_2 or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before f_8_2_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to f_8_2_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 f_8_2

% Last Modified by GUIDE v2.5 11-Mar-2018 23:30:39

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @f_8_2_OpeningFcn, ...
                   'gui_OutputFcn',  @f_8_2_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 f_8_2 is made visible.
function f_8_2_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 f_8_2 (see VARARGIN)

% Choose default command line output for f_8_2
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes f_8_2 wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = f_8_2_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 slider movement.
function slider1_Callback(hObject, eventdata, handles)
% hObject    handle to slider1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'Value') returns position of slider
%        get(hObject,'Min') and get(hObject,'Max') to determine range of slider
im=imread('cameraman.tif');     %读原始图像
axes(handles.axes2);            %显示画图轴      
imshow(im);                     %显示图像  
k=get(hObject,'value');         %获取滑动条值
imshow(k.*im)                   %显示灰度变换后图像
% --- Executes during object creation, after setting all properties.
function slider1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to slider1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: slider controls usually have a light gray background.
if isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
    set(hObject,'BackgroundColor',[.9 .9 .9]);
end


% --- If Enable == 'on', executes on mouse press in 5 pixel border.
% --- Otherwise, executes on mouse press in 5 pixel border or over slider1.
function slider1_ButtonDownFcn(hObject, eventdata, handles)
% hObject    handle to slider1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- 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)
im=imread('cameraman.tif')       %读入原始图像
axes(handles.axes1)              %当前画图轴 
imshow(im);                      %显示原始图像  
