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blindwatermark
- 数字水印程序，包括多分辨嵌入水印、提取水印程序，盲水印嵌入、提取程序，以及滤波攻击和JPEG攻击程序，PSNR和相似度计算公式（MATLAB）-digital watermarking procedures, including multiresolution embedded watermark, watermark extraction procedure, blind watermark embedding and extraction procedures, Filtering and
LSB.rar
- 利用LSB算法去实现了电子水印技术。代码完全实现了嵌入以及提取， 算法同时包含了4种攻击算法以及利用psnr测量提取的水印和攻击后提取的水印,This algorithm describes digital watermark technique by using LSB. This code implement embedding and extraction. At the meanwhile, this algorithm includes 4 different kinds of att
DWT
- 代码利用DWT算法实现了电子水印技术。 其中包括了水印的插入，提取，以及4种不同的攻击。最后，测量了psnr-This algorithm describe digital watermark algorithm by using DWT. It implements embedding, extraction, and 4 different attacks. in the end, it measures psnr
watermark
- 置乱变换后图像的lsb嵌入，以及提取程序，另外还包含psnr程序，可以与本人上传的dct频域嵌入进行对比-Image scrambling transformation lsb embedding, as well as the extraction procedure, also includes psnr program, can I upload dct compare the frequency domain embedding
PSNR
- 计算一幅黑白图像加入水印后两幅图像的峰值信噪比PSNR值-Calculated by adding a black and white images watermark images after the two PSNR values of the peak signal to noise ratio
waterprint
- 用于求嵌入水印后图像的峰值信噪比PSNR以及提取水印信息的MATLAB程序-For seeking the watermarked image PSNR PSNR and watermark extraction procedure MATLAB
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
watermark
- visible watermarking of two images using DTC is given in this file.PSNR of watermarked image is also calulated along with coreletion factor-visible watermarking of two images using DTC is given in this file.PSNR of watermarked image is also calulated
dwtwm
- This program embed watermark in the wavelet coefficients.Recovery of watermark possible even in presence of noise.Evaluated with psnr
psnr
- 计算 PSNR (峰值信噪比) 傅立叶域水印源码-alculation of PSNR (Peak Signal to Noise Ratio) Fourier domain watermark source
watermark
- 文件夹LSB中是空域LSB算法程序，文件夹COX中是Cox算法主要程序，文件夹DCT中是频域加在中频的算法的程序。 步骤：把LSB，COX，DCT三个文件夹考在MATLAB目录下； 运行lsb_embed,programme,dct2_embed_mod即可。其中PSNR.m是计算峰值信噪比程序；attact.m & robust.m是攻击程序。-Content: folder LSB of spatial LSB algorithm program, folder COX Cox a
psnr-and-nc
- 数字音频水印中，原始载体音频和含水印音频之间的峰值信噪比PSNR和原始水印与提取出来的水印之间的归一化相关系数NC-Digital audio watermarking normalized correlation coefficient between PSNR PSNR between the original carrier audio and watermarked audio and the original watermark and extracted watermark, NC
Watermarks-and-Features
- This MATLAB Code will help to determine the watermark and its extraction properties like PSNR
watermatking
- 对信号进行DWT分解，并对信号进行水印提取重构，测试信噪比-decompose signal by DWT,watermark the watermarking test it s PSNR
watermarking-image-aimage
- 在Matlab环境下实现图片的水印嵌入，利用离散小波变换，较好的实现了应有的功能，并且通过计算PSNR值很好的验证了水印算法的不可见性和鲁棒性。-Watermark image is realized in Matlab environment, using the discrete wavelet transform, achieve a better functions, and are in good agreement with the watermark imperceptibilit
A-Watermarking-Algorithm(MATLAB)--
- 盲水印提取时不需要参考原始载体图像,在信息隐藏、版权保护等方面具有更广泛的应用前景。提出的盲水印算法在分块离散余弦变换(DCT)和离散小波变换(DWT)的基础上,利用关系双方DCT系数和DWT系数在受到攻击时具有相同变化趋势的特点,采用关系嵌入和量化嵌入的自适应选择嵌入策略,较大幅度地提高了盲水印提取的鲁棒性。同时在量化嵌入中采用抖动调制,实现了水印透明性和鲁棒性调节的便捷性。大量仿真实验结果表明该算法对噪声干扰、低通滤波、JPEG压缩、对比度增强等攻击有很好的鲁棒性和透明性。关键词 数字水印盲
psnr
- 峰值信噪比（PSNR），一种评价图像的客观标准。水印提取判断效果。-Peak Signal to Noise Ratio (PSNR), objective criteria for evaluating image. Determine the effect of watermark extraction.
watermark-and-psnr
- DIGITAL WATERMARKING USING LSB
Robust-Image-Watermarking-using-Tetrolet-Transfor
- This paper proposes new watermarking technique based on tetrolet domain. The tetrolet transform is a new adaptive Haar-type wavelet transform based on tetrominoes. It avoids Gibbs oscillation because it applies the Haar function at the edge o
watermark
- 利用分数阶去水印，嵌入伪随机序列，提高了峰值信噪比-Fractional use to watermark embedding pseudo-random sequence, improve the PSNR