Mengubah Citra RGB menjadi Citra Negatif

bagi-bagi tugas PCD nih..
script ini untuk membuat program Mengubah Citra RGB menjadi Citra Negatif dengan menggunakan GUI MATLAB

function varargout = tugas_pcd_citra_negative(varargin)

% TUGAS_PCD_CITRA_NEGATIVE M-file for tugas_pcd_citra_negative.fig

%      TUGAS_PCD_CITRA_NEGATIVE, by itself, creates a new TUGAS_PCD_CITRA_NEGATIVE or raises the existing

%      singleton*.

%

%      H = TUGAS_PCD_CITRA_NEGATIVE returns the handle to a new TUGAS_PCD_CITRA_NEGATIVE or the handle to

%      the existing singleton*.

%

%      TUGAS_PCD_CITRA_NEGATIVE('CALLBACK',hObject,eventData,handles,...) calls the local

%      function named CALLBACK in TUGAS_PCD_CITRA_NEGATIVE.M with the given input arguments.

%

%      TUGAS_PCD_CITRA_NEGATIVE('Property','Value',...) creates a new TUGAS_PCD_CITRA_NEGATIVE or raises the

%      existing singleton*.  Starting from the left, property value pairs are

%      applied to the GUI before tugas_pcd_citra_negative_OpeningFcn gets called.  An

%      unrecognized property name or invalid value makes property application

%      stop.  All inputs are passed to tugas_pcd_citra_negative_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 tugas_pcd_citra_negative

% Last Modified by GUIDE v2.5 31-Oct-2014 17:16:18

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

gui_State = struct('gui_Name',       mfilename, ...

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @tugas_pcd_citra_negative_OpeningFcn, ...

                   'gui_OutputFcn',  @tugas_pcd_citra_negative_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 tugas_pcd_citra_negative is made visible.

function tugas_pcd_citra_negative_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 tugas_pcd_citra_negative (see VARARGIN)

% Choose default command line output for tugas_pcd_citra_negative

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

% UIWAIT makes tugas_pcd_citra_negative wait for user response (see UIRESUME)

% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.

function varargout = tugas_pcd_citra_negative_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)

% untuk mengambil gambar dari folder

global im im2

[path,user_cance]=imgetfile();

if user_cance

    msgbox(sprintf('Error'), 'Error', 'Error');

    return

end

im=imread(path);

im=im2double(im); %mengubah ke double

im2=im; %untuk proses backup

axes(handles.axes1);

imshow(im);

% --- 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)

% untuk memuat ulang gambar kemabali ke kondisi semula

global im2

axes(handles.axes1);

imshow(im2);

% --- 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)

global im

imnegatif=im;

imnegatif=1-im;

axes(handles.axes1);

imshow(imnegatif);

Selamat Mencoba....

Semoga dapat membantu temen-temen menyelesaikan tugas dan menambah ilmu... :D