搜索资源列表
dct_total_ss
- 利用DCT域进行扩频水印的嵌入,含实验图像,和各种经典的攻击方式。可选择嵌入强度和攻击强度。利用Matlab编写
sswm111
- 扩频水印算法的程序,实现原始图像的读入,水印的嵌入以及水印的提取等
kuopin_wangying
- 王颖:数字图像水印 用扩频方法实现数字水印-Wayne Wang: Digital image watermarking method using spread-spectrum digital watermarking
FreqWatermark
- 一种基于DCT的扩频水印算法,本算法通过对水印信息进行扩频,在原始载体图像的DCT域内进行水印嵌入。-DCT-based spread spectrum watermarking algorithm, the algorithm is spreading through the watermark information in the original carrier image of the DCT domain for watermark embedding.
kuopin
- 关于扩频的图像数字水印 -kuopin watermark kuopin watermark
matlab_watermark
- 本文算法是将24 位真彩图的亮度分量分块 DCT ,然后利用DCT 量化系数的奇偶特性嵌入8 位灰度水印图,并通过PN 序列加密来保证水印的 安全性。算法中,将灰度图像转换为二进制数据 流,置乱后扩频调制,隐藏在宿主DCT 系数量化值 中,提取时不需要宿主信号,实现水印信号的盲提 取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantiza
Algorithm-of-colour-image-watermark
- 据扩频通信技术原理,利用m序列生成水印,通过扩频码与待检测载体图像的相关性设计了DCT域 的彩色图像水印算法-Abstract:An algorithm of colour image watermark in DCT domain based on spread spectrum communication was introduced
watermark_paper
- 首先将二值水印图像经过降维操作转化为一维序列,再将一维序列与m 序列做扩频 调制,最后对音频信号进行分段离散余弦变换,把经过调制的水印信号经过量化处理过程嵌入到离 散余弦变换后的系数中 提取水印时对含水印信号的音频信号也进行分段离散余弦变换,然后利用 原始音频信号提取水印. 实验证明了该技术的鲁棒性和不可感知性.
Multiple-Watermarking
- 利用基于m 序列的扩频技术实现了 一种数字图像空间域的多重水印算法. 根据m 序列的伪随机特性和抗干扰性能, 使水印具有良好 的隐蔽性和稳健性.-A kind of mult iple digital image watermark embedding and detect ing alg orithm in spat ial domain w as r ealized by use of spr ead spec- tr um technology based on m se
JMsim
- 数字图像扩频水印算法,将一幅水印图像以扩频的方式加载到载体图像上-Spread spectrum watermarking of digital images
kuopin
- 通过MATLAB编程实现基带的图像,调制之后的图像,扩频之后的图像,解扩解调之后的图像来完成扩频通信系统的实现-MATLAB programming by the baseband image, the image after modulation, spreading the image after the image after despreading demodulation of spread spectrum communication system to achieve comple
rakereceive_kron
- 本程序仿真了AWGN信道下,采用DS扩频对bpsk信号的影响,扩频码采用walsh码,扩频因子16; 接收端进行rake接收,然后分集合并,比较了三种分集方式对误码率的影响 从图像可以看出在扩频因子较高的情况下,最大比值合并与等增益合并性能相近-This program simulates the AWGN channel, using DS spread spectrum signal for bpsk influence spreading code using walsh code
kuopin_wangying
- 王颖:数字图像水印 用扩频方法实现数字水印-Wayne Wang: Digital image watermarking method using spread-spectrum digital watermarking
cox-watermarking-master
- 再matlab上实现基于扩频的数字水印。图像处理-This is a simple spread-spectrum based informed watermarking implementation in MATLAB.
watermake
- matlab实现的音频水印和图像水印代码 包括回声和量化方法 扩频水印以及最低位编码 附实验报告-Matlab audio watermarking and image watermarking code Including the echo and quantitative methods Spread spectrum watermarking and lowest coding experiment report
comearison
- 直接序列扩频通信系统误码率的仿真分析PN码同步方法的比较与仿真(Bit error rate of direct sequence spread spectrum communication system simulation analysis of the comparison of PN code synchronization method and simulation)
epbcify-operates
- 这是关于扩频的一些基本知识,希望能对大家有帮助,统进行了仿真(This is about some basic knowledge of spread spectrum, hope can help to you, the simulation system)
盲多用户检测LMS和RLS算法matlab实现
- LMS,RLS算法对扩频系统多用户检测,输出信干比图像(LMS, RLS algorithm to spread spectrum system multi-user detection, output signal to interference ratio image)
直接序列扩频水印的嵌入与提取
- 实现直接序列扩频水印的嵌入与提取。基于待嵌入消息生成二进制水印序列,生成扩频码,用消息序列调制生成水印序列。依次处理灰度图像的每一个载体图像像素,根据相应位置 水印序列完成嵌入修改。(Realize the embedding and extraction of direct sequence spread spectrum watermark. The binary watermark sequence is generated based on the message to be embed