1 簡介

本文是基于MATLAB的GUI來對不同的（彩色或灰色）圖像進行圖像增強的相關(guān)處理，主要包括以下四點：

頻域變換：傅里葉變換和離散余弦變換及其反變換，可將圖像在空域上的特性轉(zhuǎn)化到頻域上；

疊加噪聲：對圖像添加高斯噪聲和椒鹽噪聲；

空域濾波：對噪聲污染后的圖像添加不同模板下的平滑濾波和銳化濾波，可選擇不同模板尺寸；

頻域濾波：對噪聲污染后的圖像添加理想低通濾波器、巴特沃斯低通濾波器、理想高通濾波器、巴特沃斯高通濾波器、帶通濾波器、帶阻濾波器等，可實現(xiàn)平滑圖像的效果。

2 部分代碼

function varargout = untitled2(varargin)% UNTITLED2 M-file for untitled2.fig% ? ? ?UNTITLED2, by itself, creates a new UNTITLED2 or raises the existing% ? ? ?singleton*.%% ? ? ?H = UNTITLED2 returns the handle to a new UNTITLED2 or the handle to% ? ? ?the existing singleton*.%% ? ? ?UNTITLED2('CALLBACK',hObject,eventData,handles,...) calls the local% ? ? ?function named CALLBACK in UNTITLED2.M with the given input arguments.%% ? ? ?UNTITLED2('Property','Value',...) creates a new UNTITLED2 or raises the% ? ? ?existing singleton*. ?Starting from the left, property value pairs are% ? ? ?applied to the GUI before untitled2_OpeningFunction gets called. ?An% ? ? ?unrecognized property name or invalid value makes property application% ? ? ?stop. ?All inputs are passed to untitled2_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 untitled2% Last Modified by GUIDE v2.5 29-Apr-202110:27:36% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', ? ? ? mfilename, ... ? ? ? ? ? ? ? ? ? 'gui_Singleton', ?gui_Singleton, ... ? ? ? ? ? ? ? ? ? 'gui_OpeningFcn', @untitled2_OpeningFcn, ... ? ? ? ? ? ? ? ? ? 'gui_OutputFcn', ?@untitled2_OutputFcn, ... ? ? ? ? ? ? ? ? ? 'gui_LayoutFcn', ?[] , ... ? ? ? ? ? ? ? ? ? 'gui_Callback', ? []);if nargin & isstr(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 untitled2 is made visible.function untitled2_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 untitled2 (see VARARGIN)% Choose default command line output for untitled2handles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes untitled2 wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = untitled2_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;%四個下拉菜單% --- Executes during object creation, after setting all properties.function popupmenu1_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to popupmenu1 (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 ? ?set(hObject,'BackgroundColor','white');else ? ?set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));end% --- Executes on selection change in popupmenu1.function popupmenu1_Callback(hObject, eventdata, handles)% hObject ? ?handle to popupmenu1 (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = get(hObject,'String') returns popupmenu1 contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from popupmenu1% --- Executes during object creation, after setting all properties.function popupmenu2_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to popupmenu2 (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

3 仿真結(jié)果

4 參考文獻

[1]崔艷萌. 聯(lián)合空域和頻域的圖像去噪算法及其應(yīng)用研究[D]. 河南師范大學(xué), 2016.

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