Berikut ini merupakan pemrograman GUI Matlab mengenai aplikasi pengolahan citra digital untuk melakukan analisis citra sampel darah mikroskopis yang terjangkit malaria.

GUI yang dirancang merupakan bagian dari penelitian yang berjudul The Automatic Counting of The Number of Red Blood Cells and Identification of Plasmodium Falciparum Phase using Morphological Operations

Tujuan dari penelitian tersebut adalah:
1. Menghitung jumlah sel darah merah total,
2. Menghitung jumlah parasit yaitu plasmodium falciparum, dan
3. Mengidentifikasi fase perkembangan plasmodium falciparum

Proses pemisahan sel bertumpuk dilakukan dengan menggunakan operasi morfologi. Proses pemisahan ini dilakukan agar hasil penghitungan sel darah merah menjadi lebih akurat.

Sedangkan proses penghitungan dan identifikasi fase plasmodium falciparum dilakukan dengan melakukan ekstraksi ciri morfologi parasit.

Perkembangan parasit penyebab malaria terdiri dari tiga fase yaitu fase trophozoite (pertumbuhan), fase schizont (pembiakan), dan fase gametocyte (pembentukan kelamin).

Parasit pada fase trophozoite dikenali dengan ukurannya yang sangat kecil dibandingkan dengan ukuran sel normal. Parasit pada fase schizont dikenali dengan bentuknya yang hampir bulat. Sedangkan parasit pada fase gametocyte dikenali dengan bentuknya yang memanjang atau cenderung elips.

GUI Matlab untuk melakukan analisis citra sampel darah mikroskopis yang terjangkit malaria terdiri dari tiga buah tampilan yaitu:

1. Tampilan menu awal

2. Tampilan menu penghitungan step by step

3. Tampilan menu penghitungan otomatis

Langkah-langkah untuk melakukan penghitungan dan identifikasi pada menu step by step adalah sebagai berikut:
4.1. Buka citra sel darah merah

4.2. Normalisasi citra

4.3. Binerisasi sel total

4.4. Pemisahan sel total

4.5. Hitung jumlah sel total

4.6. Binerisasi parasit

4.7. Identifikasi fase perkembangan parasit

4.8. Hitung jumlah parasit

Sedangkan langkah-langkah untuk melakukan penghitungan dan identifikasi pada menu otomatis adalah:
5.1. Buka citra sel darah merah

5.2. Proses penghitungan dan identifikasi

Tampilan source code menu penghitungan otomatis adalah sebagai berikut:

function varargout = Otomatis(varargin)
% OTOMATIS M-file for Otomatis.fig
%      OTOMATIS, by itself, creates a new OTOMATIS or raises the existing
%      singleton*.
%
%      H = OTOMATIS returns the handle to a new OTOMATIS or the handle to
%      the existing singleton*.
%
%      OTOMATIS('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in OTOMATIS.M with the given input arguments.
%
%      OTOMATIS('Property','Value',...) creates a new OTOMATIS or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before Otomatis_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to Otomatis_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 Otomatis

% Last Modified by GUIDE v2.5 18-Jul-2014 09:15:11

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
    'gui_Singleton',  gui_Singleton, ...
    'gui_OpeningFcn', @Otomatis_OpeningFcn, ...
    'gui_OutputFcn',  @Otomatis_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 Otomatis is made visible.
function Otomatis_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 Otomatis (see VARARGIN)

% Choose default command line output for Otomatis
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);
setappdata(0,'datacontainer',hObject);
movegui(hObject,'onscreen')% To display application onscreen
movegui(hObject,'center')  % To display application in the center of screen

% UIWAIT makes Otomatis wait for user response (see UIRESUME)
% uiwait(handles.figure1);
clear all
clc
axis off
hold off

% --- Outputs from this function are returned to the command line.
function varargout = Otomatis_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 BUKA_CITRA_BT.
function BUKA_CITRA_BT_Callback(hObject, eventdata, handles)
% hObject    handle to BUKA_CITRA_BT (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
[nama_file1,nama_path1]=uigetfile( ...
    {'*.bmp;*.jpg','File Citra (*.bmp,*.jpg)';
    '*.bmp','File Bitmap (*.bmp)';...
    '*.jpg','File jpeg (*.jpg)';
    '*.*','Semua File (*.*)'},...
    'Buka File Citra Asli');

if ~isequal(nama_file1,0)
    handles.data1 = imread(fullfile(nama_path1,nama_file1));
    guidata(hObject,handles);
    axes(handles.axes1);
    imshow(handles.data1),title('Citra Asli',...
        'FontName','Maiandra GD','FontSize',14,'FontWeight','bold');
    mydatacontainer = getappdata(0,'datacontainer');
    setappdata(mydatacontainer,'gambaroriginal',handles.data1);
    setappdata(mydatacontainer,'nama_file1',nama_file1);
else
    return;
end

set (handles.NAMA_CITRA_ST,'String',nama_file1);
set (handles.LEBAR_CITRA_ST,'String',size(handles.data1,1));
set (handles.PANJANG_CITRA_ST,'String',size(handles.data1,2));
diary Automatic_data.txt;
Nama_Citra = nama_file1

% --- Executes on button press in RESET_BT.
function PROSES_BT_Callback(hObject, eventdata, handles)
% hObject    handle to RESET_BT (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% NORMALISASI
mydatacontainer = getappdata(0,'datacontainer');
gambarasli = getappdata(mydatacontainer,'gambaroriginal');
K = rgb2gray(gambarasli);
m = medfilt2(K);
setappdata(mydatacontainer,'m',m);

% MENAMPILKAN CITRA NORMALISASI
axes(handles.axes2);
imshow(m),title('Citra Normalisasi',...
    'FontName','Maiandra GD','FontSize',14,'FontWeight','bold');
hold on

% THRESHOLDING
n = imadjust(m,stretchlim(m),[1 0]);
q = 1.28*graythresh(n);
r = im2bw(n,q);

% PEMISAHAN SEL
fill = imfill(r,'holes');
se = strel('disk',5);
erodedBW = imerode(fill,se);
bw = imdilate(erodedBW,se);

% MENAMPILKAN CITRA SEL TOTAL
axes(handles.axes3);
imshow(bw), title('Citra Sel Total',...
    'FontName','Maiandra GD','FontSize',14,'FontWeight','bold');
hold on

% MENGHITUNG RATA-RATA LUAS SEL NORMAL
clear = imclearborder(bw,4);
[B,L] = bwboundaries(clear,'noholes');

stats = regionprops(L,'Area');

for k = length(B)
    area = [stats.Area];
    rata2 = sum(area)/numel(area);
end

% MENGHITUNG JUMLAH SEL TOTAL
L = bwlabel(bw);
Jumlah_Sel_Total = max(max(L))
nilai = num2str(Jumlah_Sel_Total);
set(handles.JUMLAH_SEL_TOTAL_ED,'String',nilai);

% PARASIT
mydatacontainer = getappdata(0,'datacontainer');
m = getappdata(mydatacontainer,'m');
q = 255*graythresh(m);
num_citra = double(handles.data1);
[m, n] = size(handles.data1);
for i = 1:m
    for j = 1:n
        num_citra(i,j) = num_citra(i,j)+q;
        if num_citra(i,j) > 255
            num_citra(i,j) = 0;
        end;
        if num_citra(i,j) < 0
            num_citra(i,j) = 255;
        end;
    end;
end;
P = uint8(num_citra);
gambar = im2bw(P);
Q = imclearborder(gambar);
se = strel('disk',15);
fc = imclose(Q,se);
I6 = bwareaopen(fc,7);

% MENAMPILKAN CITRA PARASIT
axes(handles.axes4);
[B,L] = bwboundaries(I6,'noholes');
imshow(L), title('Citra Parasit',...
    'FontName','Maiandra GD','FontSize',14,'FontWeight','bold');
hold on

% MENGHITUNG JUMLAH PARASIT
Z = bwlabel(I6);
Jumlah_Parasit = max(max(Z))
nilai = num2str(Jumlah_Parasit);
set(handles.JUMLAH_PARASIT_ED,'String',nilai);

% MENGHITUNG PERBANDINGAN LUAS PARASIT DENGAN LUAS RATA-RATA SEL
for k = 1:length(B)
    boundary = B{k};
    plot(boundary(:,2), boundary(:,1), 'w', 'LineWidth', 2)
end

stats = regionprops(L,'Area','centroid','Perimeter');

threshold = 0.94;

% loop over the boundaries
for k = 1:length(B)
    
    % obtain (X,Y) boundary coordinates corresponding to label 'k'
    boundary = B{k};
    
    % compute a simple estimate of the object's perimeter
    perimeter = stats(k).Perimeter;
    
    % obtain the area calculation corresponding to label 'k'
    area = stats(k).Area;
    perbandingan = area/rata2;
    
    % compute the roundness metric
    metric = 4*pi*area/perimeter.^2;
    
    % mark objects above the threshold with a black circle
    if metric > threshold;
        centroid = stats(k).Centroid;
        plot(centroid(1),centroid(2),'ko');
    end
    
    % MENGIDENTIFIKASI JENIS FASE PLASMODIUM FALCIPARUM
    if perbandingan <= 0.08;
        text(boundary(2,2),boundary(1,1)+40,'trophozoite','Color','g',...
            'FontName','Maiandra GD','FontSize',12,'FontWeight','bold');
        Fase = 'trophozoite'
        
    elseif metric > 0.826;
        text(boundary(2,2),boundary(1,1)+40,'schizont','Color','y',...
            'FontName','Maiandra GD','FontSize',12,'FontWeight','bold');
        Fase = 'schizont'
        
    else
        text(boundary(2,2),boundary(1,1)+40,'gametocyte','Color','r',...
            'FontName','Maiandra GD','FontSize',12,'FontWeight','bold');
        Fase = 'gametocyte'
    end
end
diary off;

% --- Executes on button press in PANDUAN_BT.
function PANDUAN_BT_Callback(hObject, eventdata, handles)
% hObject    handle to PANDUAN_BT (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
guidata(infoto);

% --- Executes on button press in RESET_BT.
function RESET_BT_Callback(hObject, eventdata, handles)
% hObject    handle to RESET_BT (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
set(handles.JUMLAH_SEL_TOTAL_ED,'String','')
set(handles.JUMLAH_PARASIT_ED,'String','')
set(handles.NAMA_CITRA_ST,'String','');
set(handles.LEBAR_CITRA_ST,'String','');
set(handles.PANJANG_CITRA_ST,'String','');

axes(handles.axes1)
cla('reset')
set(gca,'XTick',[])
set(gca,'YTick',[])
axes(handles.axes2)
cla('reset')
set(gca,'XTick',[])
set(gca,'YTick',[])
axes(handles.axes3)
cla('reset')
set(gca,'XTick',[])
set(gca,'YTick',[])
axes(handles.axes4)
cla('reset')
set(gca,'XTick',[])
set(gca,'YTick',[])


% --- Executes on button press in KEMBALI_BT.
function KEMBALI_BT_Callback(hObject, eventdata, handles)
% hObject    handle to KEMBALI_BT (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
close(Otomatis);
guidata(ProgramPerhitunganSel);


function JUMLAH_SEL_TOTAL_ED_Callback(hObject, eventdata, handles)
% hObject    handle to JUMLAH_SEL_TOTAL_ED (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 JUMLAH_SEL_TOTAL_ED as text
%        str2double(get(hObject,'String')) returns contents of JUMLAH_SEL_TOTAL_ED as a double

% --- Executes during object creation, after setting all properties.
function JUMLAH_SEL_TOTAL_ED_CreateFcn(hObject, eventdata, handles)
% hObject    handle to JUMLAH_SEL_TOTAL_ED (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

function JUMLAH_PARASIT_ED_Callback(hObject, eventdata, handles)
% hObject    handle to JUMLAH_PARASIT_ED (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 JUMLAH_PARASIT_ED as text
%        str2double(get(hObject,'String')) returns contents of JUMLAH_PARASIT_ED as a double

% --- Executes during object creation, after setting all properties.
function JUMLAH_PARASIT_ED_CreateFcn(hObject, eventdata, handles)
% hObject    handle to JUMLAH_PARASIT_ED (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 axes5_CreateFcn(hObject, eventdata, handles)
% hObject    handle to axes5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: place code in OpeningFcn to populate axes5
axes (hObject);
imshow('Otomatis.jpg');