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数字水印学习教程 介绍数字水印相关知识点及其matlab实现.pdf
1 程序界面
1.1 程序代码
1.2 运行结果及说明
2 空域操作
2.1 分层显示
2.1.1 程序代码
2.1.2 运行结果及说明
2.2. 位值设置
2.2.1 代码实现
2.2.2 运行结果及说明
2.3. 二值化
2.3.1 代码实现
2.3.2 运行结果及说明
2.4. sobel边缘检测
2.4.1 代码实现
2.4.2 运行结果及说明
2.5. 分块求均值
2.5.1 代码实现
2.5.2 运行结果及说明
2.6. 元胞自动机
2.6.1 代码实现
2.6.2 运行结果及说明
2.7. LSB算法演示
2.7.1 代码实现
2.7.2 运行结果及说明
2.8. LSB嵌入水印
2.8.1 代码实现
2.8.2 运行结果及说明
2.9. LSB提取水印
2.9.1 代码实现
2.9.2 运行结果及说明
3 DWT 操作
3.1 1层DWT
3.1.1 程序代码
3.1.2 运行结果及说明
3.2 2层DWT
3.2.1 程序代码
3.2.2 运行结果及说明
3.3 3层DWT
3.3.1 程序代码
3.3.2 运行结果及说明
3.4 DWT水印演示（逼近子带）
3.4.1 程序代码
3.4.2 运行结果及说明
3.5 DWT子带水印（对角线）
3.5.1 程序代码
3.5.2 运行结果及说明
3.6 DWT嵌入水印（逼近子带）
3.6.1 程序代码
3.6.2 运行结果及说明
3.7 DWT提取水印（逼近子带）
3.7.1 程序代码
3.7.2 运行结果及说明
3.8 2层DWT水印（逼近子带）
3.8.1 程序代码
3.8.2 运行结果及说明
3.9 2层DWT水印（对角线）
3.9.1 程序代码
3.9.2 运行结果及说明
3.10 3层DWT水印（逼近子带）
3.10.1 程序代码
3.10.2 运行结果及说明
3.11 3层DWT水印（对角线）
3.11.1 程序代码
3.11.2 运行结果及说明
4 提升小波操作
4.1 1层LWT
4.1.1 程序代码
4.1.2 运行结果及说明
4.2 2层LWT
4.2.1 程序代码
4.2.2 运行结果及说明
4.3 3层LWT
4.3.1 程序代码
4.3.2 运行结果及说明
4.4 LWT水印演示（逼近子带）
4.4.1 程序代码
4.4.2 运行结果及说明
4.5 LWT子带水印（对角线）
4.5.1 程序代码
4.5.2 运行结果及说明
4.6 LWT嵌入水印（逼近子带）
4.6.1 程序代码
4.6.2 运行结果及说明
4.7 LWT提取水印（逼近子带）
4.7.1 程序代码
4.7.2 运行结果及说明
4.8 2层LWT水印（逼近子带）
4.8.1 程序代码
4.8.2 运行结果及说明
4.9 2层LWT水印（对角线）
4.9.1 程序代码
4.9.2 运行结果及说明
4.10 3层LWT水印（逼近子带）
4.10.1 程序代码
4.10.2 运行结果及说明
4.11 3层LWT水印（对角线）
4.11.1 程序代码
4.11.2 运行结果及说明
5 混沌操作
5.1 生成混沌图像
5.1.1 程序代码
5.1.2 运行结果及说明
5.2 混沌加密水印图像
5.2.1 程序代码
5.2.2 运行结果及说明
5.3 混沌置乱演示
5.3.1 程序代码
5.3.2 运行结果及说明
5.4 混沌加密图像（置乱）
5.4.1 程序代码
5.4.2 运行结果及说明
5.5 混沌解密图像（逆置乱）
5.5.1 程序代码
5.5.2 运行结果及说明
6 攻击模拟
6.1 JPEG压缩
6.1.1 程序代码
6.1.2 运行结果及说明
6.2 椒盐攻击
6.2.1 程序代码
6.2.2 运行结果及说明
6.3 高斯攻击
6.3.1 程序代码
6.3.2 运行结果及说明
6.4 旋转
6.4.1 程序代码
6.4.2 运行结果及说明
6.5 裁剪
6.5.1 程序代码
6.5.2 运行结果及说明
6.6 抖动
6.6.1 程序代码
6.6.2 运行结果及说明
6.7 放大
6.7.1 程序代码
6.7.2 运行结果及说明
6.8 缩小
6.8.1 程序代码
6.8.2 运行结果及说明
6.9 滤波
6.9.1 程序代码
6.9.2 运行结果及说明
7 帮助
7.1 说明
7.1.1 程序代码
7.1.2 运行结果及说明
7.2 关于
7.2.1 程序代码
7.2.2 运行结果及说明
数字水印学习教程
本书介绍了数字水印的相关知识点及其 Matlab 实现，适合自学。希
望能对大家的学习有所帮助。如果问题请联系，lilizong@gmail.com
李立宗
1
目 录
1 程序界面..............................................................................................................................................5
1.1 程序代码......................................................................................................................................5
1.2 运行结果及说明........................................................................................................................18
2 空域操作............................................................................................................................................19
2.1 分层显示 .....................................................................................................................................19
2.1.1 程序代码..............................................................................................................................19
2.1.2 运行结果及说明..................................................................................................................20
2.2. 位值设置 ....................................................................................................................................22
2.2.1 代码实现..............................................................................................................................22
2.2.2 运行结果及说明..................................................................................................................25
2.3. 二值化 ........................................................................................................................................26
2.3.1 代码实现..............................................................................................................................26
2.3.2 运行结果及说明..................................................................................................................27
2.4. SOBEL边缘检测...........................................................................................................................28
2.4.1 代码实现..............................................................................................................................28
2.4.2 运行结果及说明..................................................................................................................29
2.5. 分块求均值 ................................................................................................................................30
2.5.1 代码实现..............................................................................................................................30
2.5.2 运行结果及说明..................................................................................................................32
2.6. 元胞自动机 ................................................................................................................................33
2.6.1 代码实现..............................................................................................................................33
2.6.2 运行结果及说明..................................................................................................................36
2.7. LSB算法演示..............................................................................................................................37
2.7.1 代码实现..............................................................................................................................37
2.7.2 运行结果及说明..................................................................................................................39
2.8. LSB嵌入水印..............................................................................................................................41
2.8.1 代码实现..............................................................................................................................41
2.8.2 运行结果及说明..................................................................................................................43
2.9. LSB提取水印..............................................................................................................................46
2.9.1 代码实现..............................................................................................................................46
2.9.2 运行结果及说明..................................................................................................................48
3 DWT 操作 .........................................................................................................................................50
3.1 1 层DWT....................................................................................................................................50
3.1.1 程序代码..............................................................................................................................50
3.1.2 运行结果及说明..................................................................................................................52
3.2 2 层DWT....................................................................................................................................55
3.2.1 程序代码..............................................................................................................................55
3.2.2 运行结果及说明..................................................................................................................57
3.3 3 层DWT....................................................................................................................................58
1
3.3.1 程序代码..............................................................................................................................58
3.3.2 运行结果及说明..................................................................................................................60
3.4 DWT水印演示（逼近子带）...................................................................................................61
3.4.1 程序代码..............................................................................................................................61
3.4.2 运行结果及说明..................................................................................................................64
3.5 DWT子带水印（对角线）.......................................................................................................66
3.5.1 程序代码..............................................................................................................................66
3.5.2 运行结果及说明..................................................................................................................69
3.6 DWT嵌入水印（逼近子带）...................................................................................................71
3.6.1 程序代码..............................................................................................................................71
3.6.2 运行结果及说明..................................................................................................................74
3.7 DWT提取水印（逼近子带）...................................................................................................77
3.7.1 程序代码..............................................................................................................................77
3.7.2 运行结果及说明..................................................................................................................81
3.8 2 层DWT水印（逼近子带）....................................................................................................83
3.8.1 程序代码..............................................................................................................................83
3.8.2 运行结果及说明..................................................................................................................86
3.9 2 层DWT水印（对角线）........................................................................................................88
3.9.1 程序代码..............................................................................................................................88
3.9.2 运行结果及说明..................................................................................................................91
3.10 3 层DWT水印（逼近子带）..................................................................................................93
3.10.1 程序代码............................................................................................................................93
3.10.2 运行结果及说明................................................................................................................96
3.11 3 层DWT水印（对角线）......................................................................................................98
3.11.1 程序代码............................................................................................................................98
3.11.2 运行结果及说明..............................................................................................................101
4 提升小波操作..................................................................................................................................103
4.1 1 层LWT ..................................................................................................................................103
4.1.1 程序代码............................................................................................................................103
4.1.2 运行结果及说明................................................................................................................105
4.2 2 层LWT ..................................................................................................................................107
4.2.1 程序代码............................................................................................................................107
4.2.2 运行结果及说明................................................................................................................109
4.3 3 层LWT ..................................................................................................................................110
4.3.1 程序代码............................................................................................................................ 110
4.3.2 运行结果及说明................................................................................................................ 112
4.4 LWT水印演示（逼近子带）..................................................................................................113
4.4.1 程序代码............................................................................................................................ 113
4.4.2 运行结果及说明................................................................................................................ 116
4.5 LWT子带水印（对角线） .....................................................................................................118
4.5.1 程序代码............................................................................................................................ 118
4.5.2 运行结果及说明................................................................................................................121
4.6 LWT嵌入水印（逼近子带）..................................................................................................123
4.6.1 程序代码............................................................................................................................123
2
4.6.2 运行结果及说明................................................................................................................126
4.7 LWT提取水印（逼近子带）..................................................................................................129
4.7.1 程序代码............................................................................................................................129
4.7.2 运行结果及说明................................................................................................................133
4.8 2 层LWT水印（逼近子带）...................................................................................................135
4.8.1 程序代码............................................................................................................................135
4.8.2 运行结果及说明................................................................................................................138
4.9 2 层LWT水印（对角线） ......................................................................................................140
4.9.1 程序代码............................................................................................................................140
4.9.2 运行结果及说明................................................................................................................143
4.10 3 层LWT水印（逼近子带）.................................................................................................145
4.10.1 程序代码..........................................................................................................................145
4.10.2 运行结果及说明..............................................................................................................148
4.11 3 层LWT水印（对角线）.....................................................................................................150
4.11.1 程序代码..........................................................................................................................150
4.11.2 运行结果及说明..............................................................................................................153
5 混沌操作..........................................................................................................................................155
5.1 生成混沌图像..........................................................................................................................155
5.1.1 程序代码............................................................................................................................155
5.1.2 运行结果及说明................................................................................................................157
5.2 混沌加密水印图像..................................................................................................................159
5.2.1 程序代码............................................................................................................................159
5.2.2 运行结果及说明................................................................................................................161
5.3 混沌置乱演示..........................................................................................................................163
5.3.1 程序代码............................................................................................................................163
5.3.2 运行结果及说明................................................................................................................165
5.4 混沌加密图像（置乱）..........................................................................................................167
5.4.1 程序代码............................................................................................................................167
5.4.2 运行结果及说明................................................................................................................170
5.5 混沌解密图像（逆置乱）......................................................................................................172
5.5.1 程序代码............................................................................................................................172
5.5.2 运行结果及说明................................................................................................................174
6 攻击模拟..........................................................................................................................................176
6.1 JPEG压缩.................................................................................................................................176
6.1.1 程序代码............................................................................................................................176
6.1.2 运行结果及说明................................................................................................................177
6.2 椒盐攻击..................................................................................................................................180
6.2.1 程序代码............................................................................................................................180
6.2.2 运行结果及说明................................................................................................................181
6.3 高斯攻击..................................................................................................................................183
6.3.1 程序代码............................................................................................................................183
6.3.2 运行结果及说明................................................................................................................184
6.4 旋转..........................................................................................................................................186
3
6.4.1 程序代码............................................................................................................................186
6.4.2 运行结果及说明................................................................................................................188
6.5 裁剪..........................................................................................................................................190
6.5.1 程序代码............................................................................................................................190
6.5.2 运行结果及说明................................................................................................................193
6.6 抖动..........................................................................................................................................195
6.6.1 程序代码............................................................................................................................195
6.6.2 运行结果及说明................................................................................................................196
6.7 放大..........................................................................................................................................198
6.7.1 程序代码............................................................................................................................198
6.7.2 运行结果及说明................................................................................................................200
6.8 缩小..........................................................................................................................................202
6.8.1 程序代码............................................................................................................................202
6.8.2 运行结果及说明................................................................................................................204
6.9 滤波..........................................................................................................................................206
6.9.1 程序代码............................................................................................................................206
6.9.2 运行结果及说明................................................................................................................209
7 帮助.................................................................................................................................................. 211
7.1 说明..........................................................................................................................................211
7.1.1 程序代码............................................................................................................................ 211
7.1.2 运行结果及说明................................................................................................................213
7.2 关于..........................................................................................................................................215
7.2.1 程序代码............................................................................................................................215
7.2.2 运行结果及说明................................................................................................................216
4
1 程序界面
1.1 程序代码
function varargout = my2(varargin)
% MY2 M-file for my2.fig
% MY2, by itself, creates a new MY2 or raises the existing
% singleton*.
%
% H = MY2 returns the handle to a new MY2 or the handle to
% the existing singleton*.
%
% MY2('CALLBACK',hObject,eventData,handles,...) calls the local
% function named CALLBACK in MY2.M with the given input arguments.
%
% MY2('Property','Value',...) creates a new MY2 or raises the
% existing singleton*. Starting from the left, property value pairs are
% applied to the GUI before my2_OpeningFunction gets called. An
% unrecognized property name or invalid value makes property application
% stop. All inputs are passed to my2_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 my2
% Last Modified by GUIDE v2.5 23-May-2009 22:57:56
% imshow('a.bmp');
5
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @my2_OpeningFcn, ...
'gui_OutputFcn', @my2_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 my2 is made visible.
function my2_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 my2 (see VARARGIN)
% Choose default command line output for my2
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
subplot(1,1,1),imshow('fengmian.bmp');
% UIWAIT makes my2 wait for user response (see UIRESUME)
% uiwait(handles.figure1);
6
% --- Outputs from this function are returned to the command line.
function varargout = my2_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 Untitled_1_Callback(hObject, eventdata, handles)
% hObject handle to Untitled_1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% --------------------------------------------------------------------
function Untitled_2_Callback(hObject, eventdata, handles)
% hObject handle to Untitled_2 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% --------------------------------------------------------------------
function Untitled_3_Callback(hObject, eventdata, handles)
% hObject handle to Untitled_3 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% --------------------------------------------------------------------
function Untitled_4_Callback(hObject, eventdata, handles)
% hObject handle to Untitled_4 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
7
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