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dct2_embed
- 数字水印嵌入算法,利用离散余弦变换的(dct)算法,对以往的算法有所改进-Digital watermark embedding algorithm, using discrete cosine transform (dct) algorithm, an improvement on previous algorithms
dct2_recover
- 数字水印提取算法,利用离散余弦变换的(dct)算法,对以往的算法有所改进-Digital watermark extraction algorithm using discrete cosine transform (dct) algorithm, an improvement on previous algorithms
dwt_recover
- 数字水印提取算法,利用离散余弦变换的(dct)算法-Digital watermark extraction algorithm using discrete cosine transform (dct) algorithm
DCT_SVD
- 本文提出一种在原始视频DCT(离散余弦变换)与SVD(奇异值分解)域自适应嵌入水印的算法。算法首先将视频流分割成一个个场景,场景中的视频图像被变换到DCT-SVD域中,水印量化嵌入在最大奇异上,实现了水印盲检测。同时实验证明该算法在满足透明性要求下也满足一定的鲁棒性要求,能够抵抗低通滤波、中值滤波、椒盐噪声、高斯噪声、H.264压缩攻击以及统计攻击和帧剪切等攻击。-This paper presents an original video in the DCT (Discrete Cosine
SVM_GA
- 提出一种基于支持向量机( SVM)和遗传算法(GA)的离散余弦变换(DCT)域盲数字图像水印方法. 该方法能自适应于图像的局部特征. 依据图像块的局部特性,利用SVM对图像块分类,自适应地确定水印嵌入强度, GA用来优化水印嵌入位置. 实验结果表明该方法有较好的不可见性和较强对抗攻击的鲁棒性.-Based on support vector machine (SVM) and genetic algorithm (GA), discrete cosine transform (DCT) doma
graydct
- DCT给灰度图像加二值的水印信息,运行显示四幅图,分别是原图像,水印图像,加水印的图像和提取的水印图像-DCT to gray image plus two watermark values, run the show four maps are the original image, watermark image, add watermark image and extracted watermark image
DCT
- 一个实用的DCT数字图像水印程序,可以直接运行,包括很多攻击类型以及图片-A practical digital image watermark DCT procedure can run, including many types of attacks, as well as pictures
dct1_embed
- 数字水印 数字水印算法 基于DCT的数字水印算法,水印嵌入,水印提取-Digital watermarking digital watermarking algorithm for digital watermarking algorithm based on DCT, watermark embedding, watermark extraction
digitalwatermarking
- DCT watermark images
extract
- 水印嵌入后的提取,在dct域音频水印中的基础应用-After the extraction of the watermark embedded in the dct domain based on application of audio watermarking
signature
- 该目录包含了基于可移植的C语言的数字水印算法的代码。这些代码具有示范 性的意义,且有一定的鲁棒性。 需要安装NetPGM的程序包(用来存取pgm格式图像),然后才能在linux下面编译。 NetPGM是图像文件的输入/输出软件包。可以在网上搜索得到。我们已经对 256灰度级,512×512大小的图像进行了测试。程序编译后的调用格式如下(以encode为例): wm_cox_e -s cox.sig -o wm_image.pgm image.pgm 其中,-s表示要
A.Blind.MPEG-2.Video.Watermarking.Robust.to.Regula
- Abstract—Based on the observation that low-frequency DCT coefficients of an image are less affected by geometric processing, we propose a new blind MPEG-2 video watermarking algorithm robust to camcorder recording. Both the embedding and extr
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
dct-with-noise
- it is a file to watermark the image file in matlab
watermark
- 利用噪声序列对图像DCT域的中频系数进行水印嵌入-embedding watermark in the DCT coefficient.
dct
- 本程序基于matlab开发环境,对数字水印进行8*8DCT变换,属于非盲数字水印!-Matlab-based development environment for this program, the digital watermark 8* 8DCT transform, a non-blind watermarking!
dct
- 在一个256*256像素的图像中嵌入水印,并经过高斯白噪声,最后在解调出原始图像与水印图像-In a 256* 256 pixel image embedded watermark, and after a Gaussian white noise, and finally demodulate the original image and watermark image
Binary-text-digital-image
- 提出了一种可抗 几何攻击的二值文本图像水印算法. 该算法基于DCT,它将二值图像的DCT、图像的视觉特征向 量和加密技术有机结合起来,在提取水印时不需要原始图像,是一种实用的盲水印算法-We propose a geometric attacks against Binary Text Watermarking Algorithm. The algorithm is based on DCT, it binary image DCT, the image of the visual fe
a1
- 首先将YUV格式的视频转换为MAtlab适用的格式,通过主要采用DCT变换的方式,实现视频水印的嵌入。-First, the YUV format video conversion MAtlab for the format, mainly DCT transform by way of video watermark embedding.
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