function varargout = untitled(varargin)
% UNTITLED MATLAB code for untitled.fig
% UNTITLED, by itself, creates a new UNTITLED or raises the existing
% singleton*.
%
% H = UNTITLED returns the handle to a new UNTITLED or the handle to
% the existing singleton*.
%
% UNTITLED('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in UNTITLED.M with the given input arguments.
%
% UNTITLED('Property','Value',...) creates a new UNTITLED or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before untitled_OpeningFcn gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to untitled_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 untitled
% Last Modified by GUIDE v2.5 20-Mar-2021 09:33:03
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @untitled_OpeningFcn, ...
'gui_OutputFcn', @untitled_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 untitled is made visible.
function untitled_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 untitled (see VARARGIN)
% Choose default command line output for untitled
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes untitled wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = untitled_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 open.
function open_Callback(hObject, eventdata, handles)
%选择图片，可以是以下格式（*这个符号是通配符，表示可以是任意长度的任意字符）
[filename,pathname]=uigetfile({'*.*';'*.bmp';'*.jpg';'*.tif';'*.jpeg'},'选择图像');
%将im定义成全局变量，这样在代码的任何位置都可以使用im了。
global im;
%如果没有输入路径，则弹出错误对话框
if isequal(filename,0)||isequal(pathname,0)
errordlg('您还没有选取图片！！','程序员哥哥告诉你');
return;
else
%合成路径+文件名
image=[pathname,filename];
%读取图像
im=imread(image);
gray = rgb2gray(im);
%打开坐标，方便操作
set(handles.before,'HandleVisibility','ON');
%使用图像，操作在坐标before里
axes(handles.before);
%在坐标图before里显示原图像
imshow(gray);
end
% hObject handle to open (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 mean.%均值除噪
function mean_Callback(hObject, eventdata, handles)
global Xnoised;
global X;
g1 = imfilter(Xnoised, fspecial('average'));%均值滤波
P = psnr(X,g1);
set(handles.final,'HandleVisibility','ON');
%使用图像，操作在坐标before里
axes(handles.final);
%在坐标图before里显示原图像
%imshow(im);
imshow(g1);
title(['均值去噪 PSNR = ',num2str(P)]);
% hObject handle to mean (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
function edit1_Callback(hObject, eventdata, handles)
% hObject handle to edit1 (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,'String') returns contents of edit1 as text
% str2double(get(hObject,'String')) returns contents of edit1 as a double
% --- Executes during object creation, after setting all properties. 接受噪声系数
function edit1_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- Executes during object creation, after setting all properties.
function noise_CreateFcn(hObject, eventdata, handles)
% hObject handle to noise (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: popupmenu controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- Executes on button press in clc.清除内容
function clc_Callback(hObject, eventdata, handles)
clc;
set(handles.edit1,'string','');
%清除图片
delete(allchild(handles.after));
delete(allchild(handles.before));
delete(allchild(handles.final));
cla reset
clear all
axis off
% hObject handle to clc (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 Addnoise.加高斯噪音
function Addnoise_Callback(hObject, eventdata, handles)
%打开坐标，方便操作
global im;
global Xnoised;
global X;
I=im;
X=rgb2gray(I);
%给图像加噪
t =str2double( get(handles.edit1,'String'));
Xnoised=imnoise(X,'gaussian',0,t);
set(handles.after,'HandleVisibility','ON');
%使用图像，操作在坐标after里
axes(handles.after);
%在坐标图before里显示原图像
%imshow(im);
imshow(Xnoised);
% hObject handle to Addnoise (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 pushbutton7. 加椒盐噪声
function pushbutton7_Callback(hObject, eventdata, handles)
%打开坐标，方便操作
global im;
global Xnoised;
global X;
I=im;
X=rgb2gray(I);
%给图像加噪
t =str2double( get(handles.edit1,'String'));
Xnoised=imnoise(X,'salt & pepper',t);
set(handles.after,'HandleVisibility','ON');
%使用图像，操作在坐标after里
axes(handles.after);
%在坐标图before里显示原图像
%imshow(im);
imshow(Xnoised);
% hObject handle to pushb
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