Deteksi Tepi dengan Operator Kompas

Tugas PCD

mendeteksi tepi sebuah Citra dengan menggunakan Operator Kompas.

 

functionvarargout = kompas(varargin)

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

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

'gui_Singleton',  gui_Singleton, ...

'gui_OpeningFcn', @kompas_OpeningFcn, ...

'gui_OutputFcn',  @kompas_OutputFcn, ...

'gui_LayoutFcn',  [] , ...

'gui_Callback',   []);

ifnargin&&ischar(varargin{1})

gui_State.gui_Callback = str2func(varargin{1});

end

ifnargout

    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});

else

gui_mainfcn(gui_State, varargin{:});

end

% End initialization code - DO NOT EDIT

% --- Executes just before kompas is made visible.

functionkompas_OpeningFcn(hObject, eventdata, handles, varargin)

% Choose default command line output for kompas

handles.output = hObject;

% Update handles structure

guidata(hObject, handles);

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

functionvarargout = kompas_OutputFcn(hObject, eventdata, handles)

varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.

function pushbutton1_Callback(hObject, eventdata, handles)

[filename,pathname] = uigetfile ( ...

    {'*.bmp;*.jpg;*.tif;*.gif', 'file lukisan (*.bmp,*.jpg,*.tif,*.gif)';

'*.bmp', 'gambar bmp (*.bmp)';...

'*.jpg', 'gambar JPEG (*.jpg)';...

'*.tif', 'gambartif (*.tif)';...

'*.gif', 'gambar gif (*.gif)';...

'*.*', 'semua File (*.*)'},...

'pick a file');

citra=imread(fullfile(pathname,filename));

[m n o]=size(citra);

axes(handles.axes1);

imshow(citra);

%Apabilaberupacitrawarnamakaakandirubahkegreeyscale

if(o == 3)

citra = rgb2gray(citra);

end

handles.citra=citra;

handles.m=m;

handles.n=n;

handles.o=o;

guidata(hObject, handles);

% --- Executes on button press in pushbutton2.

function pushbutton2_Callback(hObject, eventdata, handles)

hasil = compass(handles.citra);

hasil   = uint8(hasil);

    axes(handles.axes2);

imshow(hasil);

% --- Executes on button press in pushbutton3.

function pushbutton3_Callback(hObject, eventdata, handles)

delete(handles.figure1);

%FugnsiKompas -->dikonvolusikemudiandicarinilakekuatantepiterbesar

functionhasil = compass(citra)

    mask(:,:,1)=[1 1 1; 1 -2 1;-1 -1 -1];

    mask(:,:,2)=[1 1 1; -1 -2 1;-1 -1 1];

    mask(:,:,3)=[-1 1 1;-1 -2 1;-1 1 1];

    mask(:,:,4)=[-1 -1 1;-1 -2 1;1 1 1];

    mask(:,:,5)=[-1 -1 -1;1 -2 1;1 1 1];

    mask(:,:,6)=[1 -1 -1;1 -2 -1;1 1 1];

    mask(:,:,7)=[1 1 -1;1 -2 -1;1 1 -1];

    mask(:,:,8)=[1 1 1;1 -2 -1;1 -1 -1];

hasil = konvolusi(citra,mask(:,:,1));

for i=2:8,

hasil=max(hasil,konvolusi(citra,mask(:,:,i)));

end;

%FungsiKonvolusi

functionhasil=konvolusi(x,k)

    x = double(x);

hasil = x;

    [m n] = size(x);

for i=2:m-1,

for j=2:n-1,

hasil(i,j) = x(i-1,j-1)*k(1,1) + x(i-1,j)*k(1,2) +x(i-1,j+1)*k(1,3)...

                + x(i,j-1)*k(2,1) + x(i,j) * k(2,2) + x(i,j+1)*k(2,3)...

                + x(i+1,j-1)*k(3,1) + x(i+1,j)*k(3,2) + x(i+1,j+1)*k(3,3);

end;

end;

hasil=uint8(hasil);

selamat Mencoba.. /*:D*/