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Description: 对原始信号做DCT的算法：Cox 和Piva 等人提出的DCT技术的经典之作。Cox利用随机数发生器产生标准正态序列作为水印信息对图像进行整体DCT变换后，选取除去DC系数之外部分较低频率系数叠加水印信息 Piva则修改整幅图像的中频部分。对原始信号分块后，再作DCT的算法：Hsu和Wu 把图像进行8*8分块，将一个二进制序列作为水印放入DCT的中频区；有些学者则计算整个图像的DCT，把一个实数序列嵌入DCT的中频系数上。选择中频区的好处是一方面尽量减少嵌入信息对图像主观视觉的影响；同时，尽量避免有损压缩对水印信息可能带来的损失。还有一种DCT方法就是把水印信息嵌入到高频系数上，但是采用这种方法，抗压缩性非常差。-done to the original signal DCT algorithm : Cox Piva and others made the DCT technology classic. Cox using random number generator producing standard normal sequence information as a watermark image of the overall DCT, DC coefficient selection removed outside some lower frequency coefficient superposition watermark information Piva will be replaced by images of the entire IF part. The original signal block, before making the DCT algorithm : Wu Hsu and put images 8* 8 block, a binary sequence as watermarks Add DCT IF; Some scholars calculated whole image of DCT, a real sequence embedded IF DCT coefficients. IF the choice is a good one to minimize the embedded information to the subjective visual images; Meanwhile, try to avoid Compression right watermark information possible losses. There
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Author: 圣子到 |
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Description: 各种水印攻击实验，包含了大部分的操作，例如压缩，剪切，旋转等-various experimental watermark attacks, including most of the operations, such as compression, shear, rotate, etc.
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Size: 2048 |
Author: 刘江 |
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Description: 用DCT算法做数字水印，水印为伪随即序列。对整个图做DCT变换-DCT algorithm used as a digital watermark, watermark for the pseudo-then sequence. The entire plan to do DCT
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Author: 付源 |
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Description: StirMark可以从多方面测试水印算法的鲁棒性,用于测试的攻击手段包括线性滤波、非线性滤波、剪切/拼接攻击、同步性等。-StirMark from numerous tests robust watermark algorithm, used in testing the means of attack, including linear filter, non-linear filtering, shear/splicing attacks, such as synchronization.
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Author: 杨琴 |
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Description: aspx源码，在上传图片时对上传图片加图片水印或文字水印-11 source, upload pictures to upload pictures and graphics or text watermark Watermarking
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Description: 视频水印matlab源码，此为第二个压缩包，在水印领域的爱好者可以下载作为参考-Video Watermarking Matlab source, which is the second-compressed, Watermark in the field of lovers can download as a reference
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Author: 宋卡 |
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Description: 本文构造一种扩频和量化混合模型,并提出了一种图像多小波变换域内基于扩频和量化的混合数字水印方案,通过理论分析给出了扩频长度、信道容量、检测错误率等参数间的关系,实验结果表明算法实现了水印鲁棒性前提下的水印容量最大化的目的.-this paper, a spread spectrum and quantitative hybrid model, and proposes a number of images based on wavelet transform domain spread spectrum and quantification of mixed digital watermarking programs, Through theoretical analysis of the spread spectrum given length, channel capacity, the error rate testing parameters such as the relationship between them, Experimental results show that the watermark algorithm robust watermark under the premise of the purpose of maximizing capacity.
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Author: 阳光 |
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Description: 一个为视频添加水印的DMO组件，可以做为学习DMO的开发和水印叠加的例子。-adding a watermark to the video components of the DMO, the DMO can be used as learning and the development of Watermark superposition example.
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Author: beiken |
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Description: 数字水印技术模型表示及其算法研究辛海涛(哈尔滨商业大学计算机应用与工程学院，黑龙江哈尔滨15(1028)摘要：随着多媒体技术和网络技术的广泛应用，对图像、音频、视频等多媒体内容的保护成为迫切的问题“数字水印作为版权保护的重要手段和一种新型的信息隐藏方法，近几年得到了迅猛发展”．对当前数字水印分类，典型原理和算法，水印的提取、检测，数字水印以及相关技术做了论述，并对未来的研究方向作出展望．-digital watermarking technology model and algorithm research said Xin Hai- (commercial Harbin University of Engineering and Computer Application Hospitals, Harbin, Heilongjiang, 15 (1028) Abstract : With the multimedia and network technology to the broad application right images, audio, Video and other multimedia content protection has become an urgent issue "digital watermarking, as copyright protection, and an important means of a novel Information Hiding, in the past few years has been the rapid development. " Digital watermarking on the current classification, a typical principles and algorithms The watermark extraction, detection, digital watermarking and related techniques are discussed and future research directions prospects.
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Author: ghostsx |
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Description: 数字水印常用变换如dct变换小波变换离散傅立叶变换等源代码-transform digital watermark used as Extra transform wavelet transform discrete Fourier transform, and other source code
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Author: 王袍 |
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Description: 嵌入水印后的图像与原
始图像在视觉效果上几乎一样,只在亮度上稍有不
图6 仿真实验结果
图7 仿真实验结果
同,提取出的水印图像与原图像基本一致。-embedded watermark image with the original image in the visual effects are almost identical, only slight brightness on the map six simulation results Figure 7 with the simulation results. extract the watermark image with basically the same as the original image.
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Author: 江力 |
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Description: 这是一个完成各种数字图像水印的算法的程序，里面也实现了dct，fft，以及水印的改进算法，程序移植性好-This is a complete range of digital image watermarking algorithm procedure, which also realize the dct, fft, as well as to improve the watermarking algorithm, transplantation procedures and good
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Author: 粘永健 |
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Description: DWT的彩色水印嵌入算法，而且嵌入的水印附图像是彩色的。-DWT color watermark embedding algorithm, and the embedded watermark such as color drawings.
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Author: 李霞 |
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Description: 提出了一种基于小波域的图像数字水印算法·该算法将相互正交的两种水印(鲁棒水印和参考
水印)同时添加到经过DWT后的载体图像小波系数中,然后用小波反变换得到添加了水印的图像·用提取出
的参考水印来估计图像所受到的攻击,由于提取出的鲁棒水印所受的攻击与参考水印受到的攻击一样,因此
可以估计出原始的鲁棒水印·通过对嵌入水印的图像进行加入噪声、滤波、压缩以及裁剪等大量图像处理等试
验,均能正确检测出水印,表明该算法具有很好的感知效果和鲁棒性
-A wavelet-based image digital watermarking algorithm that the algorithm will be mutually orthogonal two watermarks (watermark robust watermarking and reference) at the same time added to the carrier after image after DWT wavelet coefficients, and then using wavelet transform has been Add a watermark image to use to extract a reference to estimate the watermark image by the attacks, as a result of the robust watermark extracted suffered attacks and the reference watermark by the same attack, it can be estimated through the original Robust Watermarking of the embedded watermark image by adding noise, filtering, compression and cutting, such as a large number of image processing such as testing, can correctly detect the watermark, show that the algorithm has good performance and robustness of perception
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Author: 李倩 |
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Description: 数字水印具有很大参考价值的文章 基于DCT变换、分块DCT混沌脆弱水印、自嵌入水印、图像篡改定位及恢复的脆弱水印等15篇最新水印技术文章-Digital Watermarking of great reference value to the article based on the DCT transform, DCT block chaotic fragile watermarking, since the embedded watermark, image tampering localization and recovery fragile watermarking, such as the latest 15 articles watermarking technology
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Author: zhangyiyi |
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Description: 基于离散余弦变换的水印代码，可嵌入水印信息，提取水印信息以及抗攻击测试-Discrete cosine transform-based watermark code, can be embedded watermark information, extracting the watermark information, as well as anti-attack test
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Author: chenyangji |
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Description: 一个图像的水印算法 能够完成图像的水印插入 查看等功能 希望能帮到大家-An image watermarking algorithm to insert a watermark image to view features such as hope to help the U.S.
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Author: 诺亚 |
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Description: 水印的嵌入和提取程序，利用的是分块嵌入方法，嵌入的图像为二值图像-Watermark embedding and extraction procedures, take advantage of the embedded block method, the embedded image as binary image
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Author: 田建勋 |
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Description: 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
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Author: blazer |
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Description: 数字水印处理系统主要由水印嵌入和水印检测两个过程。（1）水印嵌入过程为：数字水印（X）、原图像（I）和密钥/公钥（K）通过数字水印嵌入算法形成嵌入水印后的图像（I*）。 （2）水印检测过程为：数字水印（X）、水印图像（I*）和密钥/公钥（K）通过数字水印检测算法检测出数字水印或有无水印。该程序调试已通过！-Digital watermarking system mainly consists of watermark embedding and watermark detection of the two processes. (1) The watermark embedding process as follows: Digital watermarking (X), the original image (I) and key/public key (K) by digital watermark embedding algorithm to form watermarked image (I*). (2) The watermark detection process is as follows: Digital watermarking (X), the watermark image (I*) and key/public key (K) by digital watermark detection algorithm to detect whether the digital watermark or watermark. The program debugging has passed!
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Author: Matthew |
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