【图像隐写】基于matlab GUI DWT+SVD数字水印【含Matlab源码 606期】

一、DWT+SVD数字水印简介

理论知识参考文献：基于DWT和SVD的彩色图像数字水印算法研究
一种基于DWT-SVD的图像数字水印算法\

二、部分源代码

function varargout = main(varargin)
% MAIN M-file for main.fig
%      MAIN, by itself, creates a new MAIN or raises the existing
%      singleton*.
%
%      H = MAIN returns the handle to a new MAIN or the handle to
%      the existing singleton*.
%
%      MAIN('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in MAIN.M with the given input arguments.
%
%      MAIN('Property','Value',...) creates a new MAIN or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before main_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to main_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 main% Last Modified by GUIDE v2.5 25-May-2009 10:07:53% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...'gui_Singleton',  gui_Singleton, ...'gui_OpeningFcn', @main_OpeningFcn, ...'gui_OutputFcn',  @main_OutputFcn, ...'gui_LayoutFcn',  [] , ...'gui_Callback',   []);
if nargin & isstr(varargin{1})gui_State.gui_Callback = str2func(varargin{1});
endif nargout[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
elsegui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT% --- Executes just before main is made visible.
function main_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 main (see VARARGIN)% Choose default command line output for main
handles.output = hObject;% Update handles structure
guidata(hObject, handles);% UIWAIT makes main wait for user response (see UIRESUME)
% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.
function varargout = main_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 mouse press over axes background.
function axes1_ButtonDownFcn(hObject, eventdata, handles)
% hObject    handle to axes1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)% --- Executes during object creation, after setting all properties.
function popupmenu1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispcset(hObject,'BackgroundColor','white');
elseset(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
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)
%————————————————————显示载体图像————————————————————
f1=uigetfile('*.bmp','打开载体图像');
guidata(hObject, handles);
global cover_object;
cover_object=imread(f1);
axes(handles.axes1);
imshow(cover_object);
title('载体图像');
% --- 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)%————————————————————显示水印图像————————————————————
f2=uigetfile('*.jpg','打开原始水印图像');
guidata(hObject, handles);
global watermark;watermark=im2bw(watermark);  %对水印图像进行二值化
axes(handles.axes4);
imshow(watermark);
title('水印图像');% --- 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)
%————————————————————加密水印图像——————————————————————
global watermark;
global watermark_en;
%水印图像矩阵的行数与列数
Mm=size(watermark,1);
Nm=size(watermark,2);
N=Mm*Nm;
key=0.2345;
m(1)=key;
%产生混沌序列
for i=1:N-1m(i+1)=4*m(i)-4*m(i)^2;
end
m=mod(1000*m,256);
m=uint8(m);
m=im2bw(m);%置乱
n=1;
for i=1:Mmfor j=1:Nmwatermark_en(i,j)=bitxor(m(n),watermark(i,j));end
end% %写入加密水印图像
% imwrite(watermark_en,'watermark_en.bmp','bmp'); axes(handles.axes6);
imshow(watermark_en);
title('加密水印');
global watermark_en;% --- 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)
%————————————————————将待隐藏水印嵌入载体图像——————————————
global cover_object;
global watermark_en;
global CWI;
global Temp;
[mm,nn]=size(cover_object);  % 原图像大小
[mm1,nn1]=size(watermark_en);
[LL HL LH HH]=dwt2(cover_object,'haar');
[U,S,V]=svd(LL);  %选LH子带进行奇异值分解
af=0.03;  %嵌入强度
[lm,ln]=size(LL);
WW=zeros(lm,ln);%LL图像大小 lm lnfor j=1:nn1WW(i,j)=watermark_en(i,j);end

三、运行结果

四、matlab版本及参考文献

1 matlab版本
2014a

2 参考文献
[1] 蔡利梅.MATLAB图像处理——理论、算法与实例分析[M].清华大学出版社，2020.
[2]杨丹,赵海滨,龙哲.MATLAB图像处理实例详解[M].清华大学出版社，2013.
[3]周品.MATLAB图像处理与图形用户界面设计[M].清华大学出版社，2013.
[4]刘成龙.精通MATLAB图像处理[M].清华大学出版社，2015.
[5]梁欣.基于DWT和SVD的彩色图像数字水印算法研究[J].计算机与数字工程. 2019,47(08)
[6]张秀娟,朱春伟.一种基于DWT-SVD的图像数字水印算法[J].数字技术与应用. 2017,(10)

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