Segmentasi warna merupakan salah satu metode segmentasi citra yang memisahkan antara objek dengan background berdasarkan ciri warna tertentu dari objek tersebut.
Proses segmentasi warna diawali dengan mengkonversi ruang warna citra yang semula RGB (Red, Green, Blue) menjadi ruang warna HSV (Hue, Saturation, Value).
Komponen Hue merupakan komponen yang merepresentasikan warna dari berbagai panjang gelombang cahaya.
Komponen Hue dari ruang warna HSV
kemudian diekstrak dan dibagi-bagi menjadi beberapa daerah warna seperti
ditunjukkan pada gambar berikut ini:
Contoh tampilan program segmentasi warna ditunjukkan pada gambar berikut:
Gambar di atas merupakan hasil segmentasi warna citra untuk deteksi Band Neutrophil pada sampel darah.
File source code lengkap beserta citra untuk segmentasi warna pada materi di atas dapat diperoleh melalui halaman berikut ini: Source code
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Starting from the left, property value pairs are% applied to the GUI before Segmentasi_Warna_2_OpeningFcn gets called. An% unrecognized property name or invalid value makes property application% stop. All inputs are passed to Segmentasi_Warna_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 Segmentasi_Warna_2% Last Modified by GUIDE v2.5 22-Jun-2014 16:01:09% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', mfilename, ... 'gui_Singleton', gui_Singleton, ... 'gui_OpeningFcn', @Segmentasi_Warna_2_OpeningFcn, ... 'gui_OutputFcn', @Segmentasi_Warna_2_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{:});else gui_mainfcn(gui_State, varargin{:});end% End initialization code - DO NOT EDIT% --- Executes just before Segmentasi_Warna_2 is made visible.function Segmentasi_Warna_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 Segmentasi_Warna_2 (see VARARGIN)% Choose default command line output for Segmentasi_Warna_2handles.output = hObject;% Update handles structureguidata(hObject, handles);movegui(hObject,'center');% UIWAIT makes Segmentasi_Warna_2 wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = Segmentasi_Warna_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 structurevarargout{1} = handles.output;% --- 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)global IA DeviceID Format CAMIAHI = imaqhwinfo;IA = (IAHI.InstalledAdaptors);D = menu('Select Video Input Device:',IA);if isempty(IA)||D==0 msgbox({'You don''t have any VideoInput Installed Adaptors!',... 'OR',... 'Please! try again and select Adaptor properly.'}) returnendIA = char(IA);IA = IA(D,:);IA(IA==' ')=[];x = imaqhwinfo(IA);tryDeviceID = menu('Select Device ID',x.DeviceIDs);F = x.DeviceInfo(DeviceID).SupportedFormats;nF = menu('Select FORMAT',F);Format = F{nF};catch warndlg({'Try Another Device or ID ';... 'You Don''t Have Installed This Device (VideoInputDevice)'}) returnendtryVidObj = videoinput(IA, DeviceID, Format);handles.VidObj = VidObj;CAM = 1;vidRes = get(handles.VidObj, 'VideoResolution');nBands = get(handles.VidObj, 'NumberOfBands');axes(handles.axes1)hImage = image( zeros(vidRes(2), vidRes(1), nBands) );preview(handles.VidObj, hImage)set(VidObj,'returnedcolorspace','rgb');catch E msgbox({'Configure The Cam Correctly!',' ',E.message},'CAM INFO')endguidata(hObject, handles);set(handles.pushbutton3,'enable','on')set(handles.pushbutton4,'enable','on')set(handles.pushbutton5,'enable','on')set(handles.pushbutton6,'enable','on')set(handles.pushbutton7,'enable','on')set(handles.pushbutton8,'enable','on')set(handles.pushbutton9,'enable','on')set(handles.pushbutton10,'enable','on')set(handles.pushbutton11,'enable','on')set(handles.pushbutton12,'enable','on')set(handles.edit1,'enable','on')set(handles.text1,'enable','on')axes(handles.axes2)cla resetset(gca,'XTick',[])set(gca,'YTick',[])axes(handles.axes3)cla resetset(gca,'XTick',[])set(gca,'YTick',[])% --- Executes on button press in pushbutton2.function pushbutton2_Callback(hObject, eventdata, handles)% hObject handle to pushbutton2 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)[filename,pathname] = uigetfile({'*.jpg';'*.bmp';'*.png';'*.tif';'*.gif'});if ~isequal(filename,0) Img = imread(fullfile(pathname,filename)); axes(handles.axes1) imshow(Img) axes(handles.axes2) imshow(Img)else returnendhandles.Img = Img;guidata(hObject,handles)set(handles.pushbutton3,'enable','off')set(handles.pushbutton4,'enable','on')set(handles.pushbutton5,'enable','on')set(handles.pushbutton6,'enable','on')set(handles.pushbutton7,'enable','on')set(handles.pushbutton8,'enable','on')set(handles.pushbutton9,'enable','on')set(handles.pushbutton10,'enable','on')set(handles.pushbutton11,'enable','on')set(handles.pushbutton12,'enable','on')set(handles.edit1,'enable','off')set(handles.text1,'enable','off')axes(handles.axes3)cla resetset(gca,'XTick',[])set(gca,'YTick',[])% --- Executes on button press in pushbutton3.function pushbutton3_Callback(hObject, eventdata, handles)% hObject handle to pushbutton3 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)VidObj = handles.VidObj;Img = getsnapshot(VidObj);axes(handles.axes2)imshow(Img)image_num = str2double(get(handles.edit1,'string'));image_num = image_num + 1;set(handles.edit1, 'string', image_num);imwrite(Img,['MyImage_' num2str(image_num) '.png'],'png')handles.Img = Img;guidata(hObject,handles)% --- Executes on button press in pushbutton4.function pushbutton4_Callback(hObject, eventdata, handles)% hObject handle to pushbutton4 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==0/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton5.function pushbutton5_Callback(hObject, eventdata, handles)% hObject handle to pushbutton5 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==21/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton6.function pushbutton6_Callback(hObject, eventdata, handles)% hObject handle to pushbutton6 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==43/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton5.function pushbutton7_Callback(hObject, eventdata, handles)% hObject handle to pushbutton5 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==85/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton8.function pushbutton8_Callback(hObject, eventdata, handles)% hObject handle to pushbutton8 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==128/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton9.function pushbutton9_Callback(hObject, eventdata, handles)% hObject handle to pushbutton9 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==170/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton6.function pushbutton10_Callback(hObject, eventdata, handles)% hObject handle to pushbutton6 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==191/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton9.function pushbutton11_Callback(hObject, eventdata, handles)% hObject handle to pushbutton9 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==213/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);% --- Executes on button press in pushbutton12.function pushbutton12_Callback(hObject, eventdata, handles)% hObject handle to pushbutton12 (see GCBO)% eventdata reserved - to be defined in a future version of MATLAB% handles structure with handles and user data (see GUIDATA)Img = handles.Img;[tinggi,lebar,~] = size(Img);hsv = rgb2hsv(Img);H = hsv(:,:,1);S = hsv(:,:,2);V = hsv(:,:,3);for y=1: tinggi for x=1: lebar h = H(y,x); % Ubah warna if h < 11/255 % merah h = 0; elseif h < 32/255 % jingga h = 21/255; elseif h < 54/255 % kuning h = 43/255; elseif h < 116/255 % hijau h = 85/255; elseif h < 141/255 % cyan h = 128/255; elseif h < 185/255 % biru h = 170/255; elseif h < 202/255 % ungu h = 191/255; elseif h < 223/255 % magenta h = 213/255; elseif h < 244/255 % merah muda h = 234/255; else h = 0; % merah end % Ubah komponen H H(y,x) = h; % Ubah komponen S if S(y,x) >= 200/255 S(y,x) = 255/255; elseif S(y,x) <= 20/255 S(y,x) = 0; else S(y,x) = 128/255; end % Ubah komponen V if V(y,x) >= 200/255 V(y,x) = 255/255; elseif V(y,x) <= 20/255 V(y,x) = 0; else V(y,x) = 128/255; end endendH_aksen = H==234/255;H_aksen = logical(H_aksen);R = Img(:,:,1);G = Img(:,:,2);B = Img(:,:,3);R(~H_aksen) = 255;G(~H_aksen) = 255;B(~H_aksen) = 255;RGB = cat(3,R,G,B);axes(handles.axes3)imshow(RGB);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.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 |
