Mengenal Grafik 3D, Plots Surf,Mesh, dan Contour Pada Pengolahan Citra Menggunakan MATLAB

Untuk menggambar grafik 3- dimensi memerlukan suatu titik koordinat yaitu x,y, dan z atau bisa disebut array.

Fungsi-fungsi dari visualisasi data 3D.

SURF atau grafik permukaan, digunakan untuk memvisualisaikaan data dalam bentuk permukaan 3D dengan pewarnaan berdaarkan bobot nilai gridnya.

MESH, digunakan memvisualisasikan data dalam bentuk tiga dimensi. mesh sering disebut sebagai grafik jala yang memiliki empat titik data terdekat dalam ruang 3D.

CONTOUR, digunakan untuk membuat gariskontur dibuat dengan teknik inperpolasi titik-titik terdekat.

sebelum memulai sebaiknya membuat langkah awal seperti menampilkan axes,panel (pict typo, push button (surf,mesh,contour),stastic text, dan pop-up menu (peaks,membrane,sinc).

1. maka tampilan awal akan seperti gambar di bawah ini...

setelah itu masukkan codingnya:

function varargout = noviaa(varargin)

% NOVIAA MATLAB code for noviaa.fig

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

%      singleton*.

%

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

%      the existing singleton*.

%

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

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

%

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

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

%      applied to the GUI before noviaa_OpeningFcn gets called.  An

%      unrecognized property name or invalid value makes property application

%      stop.  All inputs are passed to noviaa_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 noviaa

% Last Modified by GUIDE v2.5 17-Mar-2020 09:46:15

% Begin initialization code - DO NOT EDIT

gui_Singleton = 1;

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

                   'gui_Singleton',  gui_Singleton, ...

                   'gui_OpeningFcn', @noviaa_OpeningFcn, ...

                   'gui_OutputFcn',  @noviaa_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 noviaa is made visible.

function noviaa_OpeningFcn(hObject, eventdata, handles, varargin)

% This function has no output args, see OutputFcn.

handles.peaks = peaks (35);

handles.membrane = membrane;

[x, y] = meshgrid (-8:0.5:8);

r = sqrt(x.^2 + y.^2) + eps;

sinc = sin(r)./r;

handles.sinc = sinc;

handles.current_data = handles.peaks;

surf(handles.current_data);

handles.peaks = peaks (35);

handles.membrane = membrane;

[x, y] = meshgrid(-8:0.5:8);

r = sqrt(x.^2 + y.^2) + eps;

sinc = sin (r)./r;

handles.sinc = sinc;

handles.current_data = handles.peaks;

surf(handles.current_data);

% --- Executes on selection change in popupmenu1.

function popupmenu1_Callback(hObject, eventdata, handles)

val = get(hObject, 'Value');

str = get(hObject, 'String');

switch str{val}

    case 'peaks' 

        handles.current_data = handles.peaks;

    case 'membrane' 

        handles.current_data = handles.membrane;

    case 'sinc'

        handles.current_data = handles.sinc;

end

guidata(hObject, handles);

% --- 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)

surf(handles.current_data);

% --- 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)

mesh(handles.current_data);

% --- 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)

contour(handles.current_data);

2. setelah itu  RUN , maka akan tampil seperti yang di bawah ini : 

 hasil dari  PEAKS

Peaks-surf

Peaks-mesh

peaks-contour

hasil dari MEMBRANE

membrane-surf

membrane-mesh

membrane-contour

hasil dari SINC

sinc-surf

sinc-mesh

sinc-contour

SEKIAN DAN TERIMAKASH!!!