1. HỌC VIỆN CÔNG NGHỆ BƯU CHÍNH VIỄN THÔNG
KHOA: VIỄN THÔNG 2
NGÀNH: ĐIỆN TỬ - VIỄN THÔNG
Môn : XỬ LÍ HÌNH ẢNH
Đề Tài : Tách ảnh đen trang ra thành 2 mặt phẳng LSB và MSB
GVHD : Ts Nguyễn Thanh Bình
LỚP : L11CQVT-N
SVTH : Nhóm 9
2. Danh sách sinh viên thực hiện :
Nguyễn Thành Tài : Nhóm Trưởng
Lí Trấn Đông
Huỳnh Bảo Phú
Lê Hồng Thành
Nguyễn Hoàng Duy Minh
Hồ Minh Quân
3. Tách ảnh trắng đen ra hai phần LSB và MSB
Ảnh gốc :
ảnh kết quả :
MSB LSB
4. Để chạy chương trình ta thực hiện các bước sau :
Bước 1 : copy file bit_plane_32 ra một thư mục khác
Bước 2 : nhấn double clich vào files trên sau khi cài đạt xong
Bước 3 : chay file bit_plane_32.exe
Bước 4 : xuất hiện hộp thoại
Bước 5 : nhấn vào open chọn đường dẫn của files hình ành
Bước 6 : nhấn vào nút lsb để xem mặt phẳng ảnh - sau do ành sẽ xuất hiện :
5. Bước 7 : nhấn vào nút msb để xem mặt phẳng ảnh – sau đó ảnh xuất hiện
Code để chương trình chạy :
function varargout = bit(varargin)
% BIT MATLAB code for bit.fig
% BIT, by itself, creates a new BIT or raises the existing
% singleton*.
%
% H = BIT returns the handle to a new BIT or the handle to
% the existing singleton*.
%
% BIT('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in BIT.M with the given input arguments.
%
% BIT('Property','Value',...) creates a new BIT or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before bit_OpeningFcn gets called. An
6. % unrecognized property name or invalid value makes property application
% stop. All inputs are passed to bit_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 bit
% Last Modified by GUIDE v2.5 15-Oct-2012 19:47:14
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @bit_OpeningFcn, ...
'gui_OutputFcn', @bit_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
7. gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
% --- Executes just before bit is made visible.
function bit_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 bit (see VARARGIN)
% Choose default command line output for bit
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes bit wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = bit_OutputFcn(hObject, eventdata, handles)
% varargout cell array for returning output args (see VARARGOUT);
% hObject handle to figure
8. % 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 open.
function open_Callback(hObject, eventdata, handles)
% hObject handle to open (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
[filename, pathname, filterindex]=uigetfile( ...
{'*.jpg','JPEG — Joint Photographic Experts Group (*.jpg)'; ...
'*.png','PNG — Portable Network Graphics (*.png)'; ...
'*.bmp','BMP — Windows Bitmap (*.bmp)';...
'*.*','All file (*.*)'}, ...
'Open picture');
link = strcat(pathname,filename);
set(handles.edit_link,'String',link);
% --- Executes on button press in source.
function source_Callback(hObject, eventdata, handles)
% hObject handle to source (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
9. % handles structure with handles and user data (see GUIDATA)
link = get(handles.edit_link,'String');
image_rgb = imread(link);
figure(1);
imshow(image_rgb);
% --- Executes on button press in gray.
function gray_Callback(hObject, eventdata, handles)
% hObject handle to gray (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
link = get(handles.edit_link,'String');
image_rgb = imread(link);
image_gray = rgb2gray(image_rgb);
figure(1);
imshow(image_gray);
% --- Executes on button press in lsb.
function lsb_Callback(hObject, eventdata, handles)
% hObject handle to lsb (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
link = get(handles.edit_link,'String');
10. image_rgb = imread(link);
image_gray = rgb2gray(image_rgb);
image_bit_lsb = bitget(image_gray,1);
figure(1);
imshow(image_bit_lsb,[]);
% --- Executes on button press in msb.
function msb_Callback(hObject, eventdata, handles)
% hObject handle to msb (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
link = get(handles.edit_link,'String');
image_rgb = imread(link);
image_gray = rgb2gray(image_rgb);
image_bit_msb = bitget(image_gray,8);
figure(1);
imshow(image_bit_msb,[]);
function edit_link_Callback(hObject, eventdata, handles)
% hObject handle to edit_link (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
11. % Hints: get(hObject,'String') returns contents of edit_link as text
% str2double(get(hObject,'String')) returns contents of edit_link as a double
% --- Executes during object creation, after setting all properties.
function edit_link_CreateFcn(hObject, eventdata, handles)
% hObject handle to edit_link (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 lsb_msb.
function lsb_msb_Callback(hObject, eventdata, handles)
% hObject handle to lsb_msb (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
link = get(handles.edit_link,'String');
image_rgb = imread(link);
image_gray = rgb2gray(image_rgb);
image_bit_lsb = bitget(image_gray,1);
