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Description: 两种DCT变换域的数字水印嵌入与提取的算法,并对用这两种算法嵌入的水印图像分别进行了几种常见的图像处理的健壮性检验- the technology of DCT image watermarking, focused on achieving two DCT transform domain of embedded and extraction algorithms. Finally, we get several common image processing robust inspection to the embedded watermark image with these two algorithms.
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Size: 627712 |
Author: 朱建伟 |
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Description: 利用MATLAB软件完成基于离散余弦变换（DCT）的可见水印算法，实现可见水印的嵌入-discussed the mathematical manipulation method of visible digital watermark and realized the visible digital watermarking inserting by completing the watermark algorithm，which based discrete cosine transformation (DCT) with the MATLAB software
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Size: 99328 |
Author: 朱建伟 |
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Description: This is partial code for the paper "An Effective Blind Watermark Algorithm Based on DCT"-This is partial code for the paper "An Effective Blind Watermark Algorithm Based on DCT"
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Size: 1024 |
Author: Sathvika |
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Description: 频域法加入数字水印的原理是首先将原始信号（语音一维信号、图像二维信号）变换到频域，常用的变换一般有DWT、DCT、DFT、WP和分形。然后，对加入了水印信息的信号进行频域反变换（IDWT、IDCT、DFT、WP），得到含有水印信息的信号。-Frequency-domain digital watermarking method by adding the principle is that first of all, the original signal (voice signal of one-dimensional, two-dimensional image signal) to frequency domain transformation, commonly used in general transform DWT, DCT, DFT, WP and fractal. Then, adding the watermark information signal to the frequency domain inverse transform (IDWT, IDCT, DFT, WP), received signal containing the watermark information.
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Size: 2048 |
Author: laura |
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Description: 实现对于数字图像进行加入水印和水印提取的操作，基于的是DCT域的变换方法。-The realization of the digital images by adding watermarks and watermark extraction operation, the DCT-based transform domain.
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Size: 577536 |
Author: mimi |
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Description: Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document.
A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.
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Size: 98304 |
Author: omar |
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Description: DCT-based watermark algorithm of Koch-Zhao for semitone images
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Size: 1024 |
Author: Niko |
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Description: 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.
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Size: 28672 |
Author: 林旭亮 |
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Description: 实现对图片数字水印的添加和缩放，并且包含数字和图片水印的添加。而且增加了缩放功能。-Implementation of digital watermarking to add the picture and zoom, and includes figures and images watermark to add. And increased the zoom feature.
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Size: 2048 |
Author: talentyao |
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Description: 本算法用matalab语言编写，实现了在DCT 域内应用RBF 神经网络检测图像水印-This algorithm with matalab language, the DCT domain RBF neural network application image watermark detection
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Size: 1024 |
Author: 张敏 |
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Description: 一种基于DCT变换的音频数字水印，将MP3音乐声音文件转化为WAV声音文件，将水印信息嵌入到WAV声音文件，再将WAV声音文件转化为MP3音乐声音文件。 -DCT-based audio digital watermark, the MP3 music sound files into WAV sound files, the watermark information embedded into the WAV sound files, and then WAV sound files into MP3 music sound files.
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Size: 34816 |
Author: 帅俊 |
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Description: 基于DCT方法的数字水印论文5篇，对学习基于DCT方法的数字水印初学者会有帮助。可以了解基于DCT的水印基本方法。-DCT-based method of digital watermarking papers 5, to learn methods of digital watermarking-based DCT would be helpful for beginners. DCT-based watermark can learn the basic method.
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Size: 1826816 |
Author: zhouhao |
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Description: watermark的DCT代码 using Matlab-watermark DCT source code in Matlab
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Size: 98304 |
Author: alex |
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Description: 数字水印嵌入算法，利用离散余弦变换的（dct）算法-Digital watermark embedding algorithm, using discrete cosine transform (dct) algorithm
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Size: 1024 |
Author: 肖乐 |
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Description: 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
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Size: 1024 |
Author: 肖乐 |
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Description: 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
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Size: 1024 |
Author: 肖乐 |
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Description: 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
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Size: 1024 |
Author: 肖乐 |
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Description: 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
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Size: 1024 |
Author: 肖乐 |
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Description: 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 Transform) and SVD (singular value decomposition) algorithm for adaptive watermark embedding. Firstly, a video stream is divided into scenes, scenes of the video image is converted to the DCT-SVD domain, the watermark embedded in the largest singular quantification, the realization of the watermark signal. Furthermore, the experiments show that the algorithm meet the transparency requirements are met under certain robustness requirements, can resist the low-pass filtering, median filtering, salt and pepper noise, Gaussian noise, H.264 compression attacks and attacks and frame shear statistics attack.
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Size: 63488 |
Author: 久久 |
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Description: 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) domain blind digital image watermarking method. The method adaptive to local image features. Based on the local characteristics of image block using the SVM the image block classification, adaptive to determine the embedding strength, GA to optimize the watermark embedding location. The experimental results show that the method has good invisibility and robustness of the strong against the attacks.
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Size: 449536 |
Author: 郭事业 |
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