数字图像处理实验四、基于GUIDE图像处理软件开发

实验四、基于GUIDE的图像处理软件开发一、实验目的（1）学习使用MATLAB GUIDE的基本操作。

（2）以图像增强为例完成基本图像处理功能的回调函数编写。

二、实验主要仪器设备（1）台式机或笔记本电脑。

（2）MATLAB软件（含GUIDE开发环境）。

三、实验原理（1）基于灰度直方图变换的图像增强。

（2）灰度修正图像增强。

（3）图像平滑滤波。

（4）图像锐化处理。

四、实验容（1）直方图的计算及用直方图均衡原理增强图像。

（2）线性灰度变换图像增强。

（3）对受椒盐噪声污染的图像采用低通处理模板去燥。

（4）对受椒盐噪声污染的图像采用中值滤波去噪。

（5）对图像采用梯度算子和拉普拉斯算子进行锐化。

五、实验步骤（1）建立开发环境。

（2）编写相关回调函数。

（3）不断调试、优化，获得较满意的人机交互效果。

六、实验程序function varargout = test4(varargin)% TEST4 MATLAB code for test4.fig% TEST4, by itself, creates a new TEST4 or raises the existing% singleton*.%% H = TEST4 returns the handle to a new TEST4 or the handle to% the existing singleton*.%% TEST4('CALLBACK',hObject,eventData,handles,...) calls the local% function named CALLBACK in TEST4.M with the given input arguments. %% TEST4('Property','Value',...) creates a new TEST4 or raises the% existing singleton*. Starting from the left, property value pairs are% applied to the GUI before test4_OpeningFcn gets called. An% unrecognized property name or invalid value makes property application % stop. All inputs are passed to test4_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 test4% Last Modified by GUIDE v2.5 30-May-2017 17:23:54% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', mfilename, ...'gui_Singleton', gui_Singleton, ...'gui_OpeningFcn', test4_OpeningFcn, ...'gui_OutputFcn', test4_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{:});elsegui_mainfcn(gui_State, varargin{:});end% End initialization code - DO NOT EDIT% --- Executes just before test4 is made visible.function test4_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 test4 (see VARARGIN)% Choose default command line output for test4handles.output = hObject;I = ones(256,256);axes(handles.axes1);imshow(I);axes(handles.axes2);imshow(I);axes(handles.axes3);imshow(I);axes(handles.axes4);imshow(I);axes(handles.axes5);imshow(I);axes(handles.axes6);imshow(I);% Update handles structureguidata(hObject, handles);% UIWAIT makes test4 wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line. function varargout = test4_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 OpenFile.function OpenFile_Callback(hObject, eventdata, handles)[file path] = uigetfile('*.bmp;*.jpg;*.png','ÇëÑ¡ÔñÒ»·ùͼÏñ');if file == 0 warndlg('ÄãµÃÊäÈëÒ»·ùͼÏñ');%¾¯¸æ¶Ô»°¿òÌáʾÊäÈëºÏ·¨Í¼ÏñÎļþelse I = imread(fullfile(path,file));axes(handles.axes1);imshow(I);handles.I = I;end% Update handles structureguidata(hObject,handles);% hObject handle to OpenFile (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 noise.function noise_Callback(hObject, eventdata, handles)I = handles.I;I = imnoise(I,'salt & pepper',0.04); %¼Ó½·ÑÎÔëÉù¡£ÔëÉùÇ¿¶ÈΪ0.04 axes(handles.axes2);imshow(I,[]);title('¼Ó½·ÑÎÔëÉù');handles.I = I;% hObject handle to noise (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 Exit.function Exit_Callback(hObject, eventdata, handles)close(gcf) %¹Ø±Õµ±Ç°Figure´°¿Ú¾ä±ú% hObject handle to Exit (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 filter2.function filter2_Callback(hObject, eventdata, handles)I = handles.I;h0 = 1/9.*[1 1 1 1 1 1 1 1]; %¶¨Òåƽ»¬Ä£°åg0 = filter2(h0,I);axes(handles.axes3);imshow(g0,[]);title('µÍͨÂ˲¨');% hObject handle to filter2 (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 medfilt2.function medfilt2_Callback(hObject, eventdata, handles)I = handles.I;M = medfilt2(I); %¶þάÖÐÖµÂ˲¨axes(handles.axes4);imshow(M);title('¶þάÖÐÖµÂ˲¨');handles.M = M;% hObject handle to medfilt2 (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 Roberts.function Roberts_Callback(hObject, eventdata, handles)R = handles.I;BW = edge(R,'roberts',0.1); %¶ÔͼÏñÇóÂÞ²®´ÄÌݶÈaxes(handles.axes3);imshow(BW,[]);title('robertsËã×Ó');% hObject handle to Roberts (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 Laplacian.function Laplacian_Callback(hObject, eventdata, handles)L = handles.I;H = [0 -1 0;-1 4 -1;0 -1 0];J = imfilter(L,H);handles.J = J;axes(handles.axes4);imshow(J,[]);title('À­ÆÕÀ­Ë¹Ëã×Ó');% hObject handle to Laplacian (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 imhist.function imhist_Callback(hObject, eventdata, handles)I = handles.I;axes(handles.axes2);imhist(I);title('ԭʼͼÏñÖ±·½Í¼');% hObject handle to imhist (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 linear.function linear_Callback(hObject, eventdata, handles)I = handles.I;J = imadjust(I,[0.3 0.7],[]); %ʹÓÃimadjustº¯Êý½øÐлҶȵÄÏßÐԱ任axes(handles.axes3);imshow(J);title('ÏßÐԱ任');axes(handles.axes4);imhist(J);title('ÏßÐԱ任ֱ·½Í¼'); %ÏÔʾ±ä»»ºóµÄͼÏñÖ±·½Í¼% hObject handle to linear (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 histeq.function histeq_Callback(hObject, eventdata, handles)I = handles.I;J = histeq(I); %Íê³ÉÖ±·½Í¼¾ùºâ»¯axes(handles.axes5);imshow(J);title('¾ùºâ»¯ºóͼÏñ');axes(handles.axes6);imhist(J);title('¾ùºâ»¯µÄÖ±·½Í¼');% hObject handle to histeq (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 Clean.function Clean_Callback(hObject, eventdata, handles)I = ones(256,256);axes(handles.axes1);imshow(I);axes(handles.axes2);imshow(I);axes(handles.axes3);imshow(I);axes(handles.axes4);imshow(I);axes(handles.axes5);imshow(I);axes(handles.axes6);imshow(I);% hObject handle to Clean (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)function edit7_Callback(hObject, eventdata, handles)% hObject handle to edit7 (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 edit7 as text% str2double(get(hObject,'String')) returns contents of edit7 as a double % --- Executes during object creation, after setting all properties.function edit7_CreateFcn(hObject, eventdata, handles)% hObject handle to edit7 (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七、实验结果八、思考题（1）结合教材第6章介绍的图像增强编程方法，说明采用GUIDE环境开发在此方面具有的特点。