1 簡(jiǎn)介

直方圖均衡化 （ Histogram Equalization ， HE ）技術(shù) 可以在圖像增強(qiáng) [2] 、光照補(bǔ)償 [3] 、圖像去霧 [4-5] 多個(gè)領(lǐng)域取 得很好的效果，可見其應(yīng)用范圍廣。

2 部分代碼

function varargout = main ( varargin ) % MAIN MATLAB code for main.fig %     MAIN, by itself, creates a new MAIN or raises the existing %     singleton*. % %     H = MAIN returns the handle to a new MAIN or the handle to %     the existing singleton*. % %     MAIN(’CALLBACK’,hObject,eventData,handles,...) calls the local %     function named CALLBACK in MAIN.M with the given input arguments. % %     MAIN(’Property’,’Value’,...) creates a new MAIN or raises the %     existing singleton*. Starting from the left, property value pairs are %     applied to the GUI before main_OpeningFcn gets called. An %     unrecognized property name or invalid value makes property application %     stop. All inputs are passed to main_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 main % Last Modified by GUIDE v2.5 19-Apr-2016 17:05:45 % Begin initialization code - DO NOT EDIT gui_Singleton = 1 ; gui_State = struct ( ’gui_Name’ ,       mfilename , ...                   ’gui_Singleton’ ,   gui_Singleton , ...                   ’gui_OpeningFcn’ , @ gui_OpeningFcn , ...                   ’gui_OutputFcn’ ,   @ main_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 % --- Outputs from this function are returned to the command line. function varargout = main_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 ; %%GUI界面初始化 function gui_OpeningFcn ( hObject , eventdata , handles , varargin ) axes ( handles . axes1 ) imshow ( ’GUI問號(hào).jpg’ ) ; axes ( handles . axes2 ) imshow ( ’GUI問號(hào).jpg’ ) ; axes ( handles . axes3 ) imshow ( ’GUI問號(hào).jpg’ ) ; axes ( handles . axes4 ) imshow ( ’GUI問號(hào).jpg’ ) ; handles . output = hObject ; set ( handles . slider1 , ’Value’ , 0.8 ); set ( handles . edit1 , ’String’ , 0.8 ) ; guidata ( hObject , handles ); %%打開測(cè)試圖像 % --- Executes on button press in open_test_img. function open_test_img_Callback ( hObject , eventdata , handles ) % hObject   handle to open_test_img (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles   structure with handles and user data (see GUIDATA) global file %定義全局變量 [ filename , pathname ]= uigetfile ({ ’*.jpg’ ; ’*.bmp’ ; ’*.gif’ ; ’*.png’ ; ’*.tif’ ; ’*.tga’ }, ’選擇測(cè)試圖像’ ); %跳出對(duì)話框 file = strcat ( pathname , filename ); %生成完成的圖像路徑和圖像名 I = imread ( file ); %讀取圖像 axes ( handles . axes1 ); %在第一個(gè)坐標(biāo)系中顯示打開的圖片 imshow ( I ); %%進(jìn)行訓(xùn)練 % --- Executes on button press in start_test. function start_test_Callback ( hObject , eventdata , handles ) % hObject   handle to start_test (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles   structure with handles and user data (see GUIDATA) global   filename   wav_num mydir wav_path_list %全局變量 h = waitbar ( 0 , ’正在訓(xùn)練，請(qǐng)稍等...’ ); for j = 1 : wav_num     str = strcat ( fullfile ( mydir , wav_path_list ( j ) . name ));     I = imread ( str );   [ count1 , I ] = GetRgbHist ( str );     Count { j }= count1 ;     II { j }= I ;     waitbar ( j / wav_num ) ; end save ( ’Parametre.mat’ , ’Count’ , ’II’ ); close ( h ); %%退出按鈕 % --- Executes on button press in close. function close_Callback ( hObject , eventdata , handles ) % hObject   handle to close (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles   structure with handles and user data (see GUIDATA) close ; % --- Executes on button press in open_xunlian. function open_xunlian_Callback ( hObject , eventdata , handles ) % hObject   handle to open_xunlian (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles   structure with handles and user data (see GUIDATA) global   filename   wav_num mydir wav_path_list %全局變量 mydir = uigetdir ( ’c:’ , ’請(qǐng)選擇訓(xùn)練樣本所在的目錄’ ); %跳出對(duì)話框 wav_path_list = dir ( fullfile ( mydir , ’*.jpg’ )); wav_num = length ( wav_path_list ); filename ={ wav_path_list . name }; str = sprintf ( ’該目錄包含%d個(gè)圖像文件’ , wav_num ); msgbox ( str ); %%開始檢測(cè) % --- Executes on button press in start_jiance. function start_jiance_Callback ( hObject , eventdata , handles ) % hObject   handle to start_jiance (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles   structure with handles and user data (see GUIDATA) load ’Parametre.mat’ ; [ a , b ]= size ( II ); global file   [ count2 , I2 ] = GetRgbHist ( file ); %bbbbb=count2 for i = 1 : b value ( i ) = imsimilar ( Count { i }, count2 , 2 ); end maxvalue = max ( value ); [ row col ]= find ( maxvalue == value ); axes ( handles . axes2 ); imshow ( II { col }); axes ( handles . axes3 ); plot ( Count { col }); hold on ; plot ( count2 , ’r’ ); legend ( ’測(cè)試圖’ , ’近似圖’ , 2 ); str = sprintf ( ’圖像直方圖 相似測(cè)試 相似度為：%s %%’ , num2str ( value ( col ))); title ( str ); A =( get ( handles . slider1 , ’Value’ )) * 100 if maxvalue > = A     axes ( handles . axes4 );     imshow ( ’危險(xiǎn)品.jpg’ );   [ y , fs ]= audioread ( ’警報(bào).mp3’ );     sound ( y , fs ); else     axes ( handles . axes4 );     imshow ( ’正常.png’ ); end guidata ( hObject , handles ) ; % --- 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 temp_Invisible_w = get ( hObject , ’Value’ ) ; set ( handles . edit1 , ’String’ , num2str ( temp_Invisible_w ) ) ; handles . Invisible_w = temp_Invisible_w ; guidata ( hObject , handles ) ; % --- 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 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 value0 = str2double ( get ( hObject , ’String’ ) ) ; if isnan ( value0 )     msgbox ( ’要輸入數(shù)字才行哦!’ );     set ( hObject , ’String’ , ’0’ );     set ( handles . slider1 , ’Value’ , 0 ); elseif value0 < 0 | value0 > 1     msgbox ( ’只能數(shù)入0－1才行哦！’ );     set ( hObject , ’String’ , ’0’ );     set ( handles . slider1 , ’Value’ , value0 ); else     set ( handles . slider1 , ’Value’ , value0 );     handles . edit1 = value0 ;     guidata ( hObject , handles ) ; end % --- Executes during object creation, after setting all properties. 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

3 仿真結(jié)果

4 參考文獻(xiàn)

[1]張懿, 劉旭, and 李海峰. "自適應(yīng)圖像直方圖均衡算法." 浙江大學(xué)學(xué)報(bào)(工學(xué)版) 41.4(2007):630-633.

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