Transformasi Geometri


Dalam pengolahan citra digital terkadang diperlukan transformasi geometri yang di antaranya meliputi operasi flip dan rotasi. Berikut ini merupakan pemrograman GUI Matlab mengenai Geometric Image Transformations:

1. Citra Asli (Original Image)1
2. Operasi Flip Horizontal2
3. Operasi Flip Vertical3
4. Operasi Flip Horizontal dilanjutkan Flip Vertical4
5. Operasi rotasi searah jarum jam dengan sudut 54°5
6. Operasi rotasi berlawanan arah jarum jam dengan sudut 162°6
Source code dan citra geometric image transformation dapat diunduh pada laman berikut: link
Sedangkan tampilan source codenya adalah:

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

% Last Modified by GUIDE v2.5 02-Sep-2015 15:36:15

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

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

% Update handles structure
guidata(hObject, handles);
movegui(hObject,'center');
clc;clear;

% UIWAIT makes Geometry_Operations wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = Geometry_Operations_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 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)
[filename,pathname] = uigetfile({'*.*'});

if isequal(filename,0)
    return
else
    Img = imread(fullfile(pathname,filename));
    axes(handles.axes1)
    cla('reset')
    imshow(Img)
end

handles.Img = Img;
guidata(hObject, handles)

% --- Executes on button press in radiobutton1.
function radiobutton1_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton1
set(handles.radiobutton1,'Value',1)
set(handles.radiobutton2,'Value',0)

Img = handles.Img;
Flip_Hor = fliplr(Img);

axes(handles.axes2)
cla('reset')
imshow(Flip_Hor)

handles.Img = Flip_Hor;
guidata(hObject, handles)

% --- Executes on button press in radiobutton2.
function radiobutton2_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of radiobutton2
set(handles.radiobutton1,'Value',0)
set(handles.radiobutton2,'Value',1)

Img = handles.Img;
Flip_Ver = flipud(Img);

axes(handles.axes2)
cla('reset')
imshow(Flip_Ver)

handles.Img = Flip_Ver;
guidata(hObject, handles)


% --- Executes on button press in checkbox1.
function checkbox1_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of checkbox1
set(handles.radiobutton1,'Value',0)
set(handles.radiobutton2,'Value',0)
set(handles.checkbox1,'Value',1)
set(handles.checkbox2,'Value',0)

% --- Executes on button press in checkbox2.
function checkbox2_Callback(hObject, eventdata, handles)
% hObject    handle to checkbox2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hint: get(hObject,'Value') returns toggle state of checkbox2
set(handles.radiobutton1,'Value',0)
set(handles.radiobutton2,'Value',0)
set(handles.checkbox1,'Value',0)
set(handles.checkbox2,'Value',1)


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


% --- 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
Img = handles.Img;
angle = get(hObject,'Value');
set(handles.edit1,'String',angle)

val1 = get(handles.checkbox1,'Value');
val2 = get(handles.checkbox2,'Value');

if val1 == 1
    Img = imrotate(Img,-angle,'bicubic','crop');
elseif val2 == 1
    Img = imrotate(Img,angle,'bicubic','crop');
end

axes(handles.axes2)
cla('reset')
imshow(Img);


% --- 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

Save

Save

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: