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Image processing laboratory

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Image processing laboratory

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11 Aug 2010 (Updated )

An application with an intuitive GUI that you can use for some image processing exercises.

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

% Last Modified by GUIDE v2.5 04-Jun-2010 22:25:16

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

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

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes img_lab wait for user response (see UIRESUME)
% uiwait(handles.figure1);
global img                  %Dichiaro una variabile globale per il nome dell'immagine
global im                   %Dichiaro una variabile globale per l'immagine vera e propria
global choice               %Dichiaro un vettore che conterr le scelte dell'utente
im=0;                       %Inizializzo a 0 im
img='';                     %Inizializzo a vuota img
choice=[1,1,1];             %Inizializzo a 1 il vettore


% --- Outputs from this function are returned to the command line.
function varargout = img_lab_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;



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



function edit2_Callback(hObject, eventdata, handles)
% hObject    handle to edit2 (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 edit2 as text
%        str2double(get(hObject,'String')) returns contents of edit2 as a double


% --- Executes during object creation, after setting all properties.
function edit2_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit2 (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 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)
global im
global choice
global img
%Controllo se  stata scelta un'immagine sulla quale poter operare
if(isempty(img))
    disp(['Nessun file immagine specificato!']);
else
%Richiamo la funzione di equalizzazione
equalizza(im,choice(2),str2num(get(handles.edit3,'String')));
end

function edit3_Callback(hObject, eventdata, handles)
% hObject    handle to edit3 (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 edit3 as text
%        str2double(get(hObject,'String')) returns contents of edit3 as a double


% --- Executes during object creation, after setting all properties.
function edit3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to edit3 (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 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)
global choice
global im
global img
%Controllo se  stata scelta un'immagine sulla quale poter operare
if(isempty(img))
    disp(['Nessun file immagine specificato!']);
else
    %Decido se richiamare la funzione che mostra una singola componente RGB
    %oppure la funzione che mostra l'immagine in bianco e nero
    if choice(1)==4
        rgb2yuv(handles.axes1,im);
    else
        show_rgb(handles.axes1,im,choice(1));
    end
end
% --- 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 img
%setto img_temp al valore scritto in edit2
img_temp=get(handles.edit2,'String');
global im
%Controllo se  stata scelta un'immagine sulla quale poter operare
if(isempty(img_temp))
    disp(['Nessun file immagine specificato!']);
else
im=imread(img_temp);                     %Leggo l'immagine da disco
img=img_temp;                       %Se l'immagine non esiste, img non viene settata
axes(handles.axes1)                 %Fisso l'axes sul quale plottare
imshow(im);                         %Mostro l'immagine
set(handles.axes1,'Visible','On')   %La rendo visibile
axis(handles.axes1,'off')           %Elimino gli assi
end


% --- 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)
%Memorizzo la scelta dell'utente
global choice
choice(1)=2;
% Hint: get(hObject,'Value') returns toggle state of radiobutton2


% --- 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)
%Memorizzo la scelta dell'utente
global choice
choice(1)=1;
% Hint: get(hObject,'Value') returns toggle state of radiobutton1


% --- Executes on button press in radiobutton3.
function radiobutton3_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(1)=3;
% Hint: get(hObject,'Value') returns toggle state of radiobutton3


% --- Executes on button press in radiobutton4.
function radiobutton4_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(1)=4;
% Hint: get(hObject,'Value') returns toggle state of radiobutton4


% --- Executes on button press in radiobutton5.
function radiobutton5_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(2)=1;
% Hint: get(hObject,'Value') returns toggle state of radiobutton5


% --- Executes on button press in radiobutton6.
function radiobutton6_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton6 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(2)=2;
% Hint: get(hObject,'Value') returns toggle state of radiobutton6


% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
global img
global im
global choice
%Controllo se  stata scelta un'immagine sulla quale poter operare
if(isempty(img))
    disp(['Nessun file immagine specificato!']);
else
    %Richiamo la funzione che cambia i livelli di quantizzazione RGB
    set_level(1,choice(3),im);
end

% --- 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)
global img
global im
global choice
%Controllo se  stata scelta un'immagine sulla quale poter operare
if(isempty(img))
    disp(['Nessun file immagine specificato!']);
else
    %Richiamo la funzione che cambia i livelli di quantizzazione B/N
    set_level(2,choice(3),im);
end


% --- Executes on button press in radiobutton7.
function radiobutton7_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(3)=1;
% Hint: get(hObject,'Value') returns toggle state of radiobutton7


% --- Executes on button press in radiobutton8.
function radiobutton8_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton8 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(3)=2;
% Hint: get(hObject,'Value') returns toggle state of radiobutton8


% --- Executes on button press in radiobutton9.
function radiobutton9_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton9 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(3)=3;
% Hint: get(hObject,'Value') returns toggle state of radiobutton9


% --- Executes on button press in radiobutton10.
function radiobutton10_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton10 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(3)=4;
% Hint: get(hObject,'Value') returns toggle state of radiobutton10


% --- Executes on button press in radiobutton11.
function radiobutton11_Callback(hObject, eventdata, handles)
% hObject    handle to radiobutton11 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%Memorizzo la scelta dell'utente
global choice
choice(3)=5;
% Hint: get(hObject,'Value') returns toggle state of radiobutton11


% --- 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)
global img
if(isempty(img))
    disp(['Nessun file immagine specificato!']);
else
compression
end

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