Description: 一种新的图像脆弱水印算法李亚琴 ，孙星明 ，杨恒伏(1．苏州市职业大学，江苏苏州215104；2．湖南大学计算机与通信学院，湖南长沙410082)摘要：提出一种基于小波变换和QR分解的图像脆弱水即方法。嵌入水印时，首先对原始图像进行三级小波分解，然后提取第三级低频子带的边缘特征，同时对此边缘特征和第三级垂直高频子带进行QR分解，用边缘特征的一部分分解结果替换垂直高频子带分解结果的相应部位来嵌入水即，最后进行小波逆变换得到嵌入水印的图像。图像认证时，首先对观测图像进行三级小波分解，第三级垂直高频子带与低频子带边缘特征的QR分解结果进行比较，就可以准确认证图像是否经过攻击，并可以精确定位受攻击的部位。实验结果表明此方法的有效性和可行性。-a new image fragile watermarking algorithm Ya-Qin Li, Sun Xingming, Heng Yang Fu (1. Suzhou City Vocational University, Suzhou City in Jiangsu 215104; 2. Hunan University College of Computer and Communication, Changsha, Hunan 410082) Abstract : A wavelet transform based on QR decomposition and the image that the fragile water ways. Embedded watermark, the first of three original image wavelet decomposition, and then extract the third level sub-band edge features, Meanwhile this edge features and third-vertical high-frequency band for QR decomposition, Edge feature with the results of the replacement part of decomposition vertical high-frequency subband results to the corresponding parts of the water that is embedded. Finally inverse wavelet transform embedded watermark images. Image Authen Platform: |
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Author:ghostsx |
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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 Platform: |
Size: 190464 |
Author:李倩 |
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Description: 基于Harr小波的彩色图像可逆水印算法的PDF文件，希望对大家有帮助-Harr Wavelet-based Color Image Watermarking Algorithm reversible PDF document, in the hope that everyone has to help Platform: |
Size: 262144 |
Author:山山 |
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Description: matlabf非常好基于Contourlet变换的水印算法.与小波变换不同的是Contourlet变换采用类似于线段（contoursegment的基得到一种多分辨、局部化、方向性的图像表示。水印信号通过基于内容的乘性方案加载到Contourlet 变换系数-matlabf very good Contourlet Transform-based watermarking algorithm. and wavelet transform is different Contourlet transform similar segment (contoursegment the base to be a multiresolution, local and express direction of the image. watermark signal by the adoption of content-based programs loaded into Contourlet transform coefficients Platform: |
Size: 477184 |
Author:ddsdsds |
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Description: 基于小波域和块分类的鲁棒自适应水印算法,基于小波域和块分类的鲁棒自适应水印算法-Based on wavelet domain and block classification of robust adaptive watermarking algorithm, based on the wavelet domain and block classification of Robust Adaptive Watermarking Algorithm Platform: |
Size: 352256 |
Author:redblue520 |
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Description: 基于扩频序列和小波变换的数字水印算法
的仿真程序-Sequence spread-spectrum based on wavelet transform and the digital watermarking algorithm simulation program Platform: |
Size: 7168 |
Author:无悔 |
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Description: 基于水印算法的音频的水印的嵌入与提取，通过转换把图像隐藏于音频中-Audio Watermarking Algorithm Based on the watermark embedding and extraction, by converting the image hidden in the audio in Platform: |
Size: 5707776 |
Author:石莹 |
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Description: 数字水印技术是近年来图像保护技术研究领域的一个热点,本文提出了一种基于小波变换的图像数字
水印嵌入算法的Matlab 实现。实验结果表明,该算法具有较好的视觉效果和透明性。- Abstract The digital watermarking technology is the most active topic in image protecting recently. In this paper ,
a digital watermarking algorithm based on Wavelet transform is proposed ,and give ou the program of this algorithm by
MatLab. The experimental results demonstrate that the method possess good vision effect and transparence. Platform: |
Size: 212992 |
Author:韩永龙 |
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Description: 基于离散小波余弦变换DCT的数字水印算法，实现了水印的嵌入提取等过程。毕业设计源代码-Discrete Cosine Transform Based on Wavelet Digital Watermarking Algorithm in DCT, the watermark embedded in the realization of the process of extraction. Graduation Project source code Platform: |
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Author:xiaobao89 |
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Description: this is partial code for paper "A Robust Wavelet-Based Watermarking Algorithm Using Edge Detection" Platform: |
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Author:Sathvika |
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Description: Owing to the broad application value of audio
watermarking in remote transmission and mobile
extraction, it is very important to study watermarking
approaches against A/D and D/A conversion. Based
on wavelet decomposition and cepstrum technology,
an audio watermarking algorithm is proposed where
the low-frequency wavelet coefficients are chosen for
cepstrum transforming. Then, the obtained cepstrum
data shows stable for watermark hiding by the
methods of edging data cutting and statistical mean
modification. The synchronization is not required in
the algorithm. Experimental results show that the
proposed algorithm can resist on the attack of A/D
and D/A successfully with features of large capacity
and zero bit error. It will be helpful for the mobile
audio in secure broadcast and management in the Platform: |
Size: 199680 |
Author:vinay |
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Description: 提出了一种新的基于离散小波变换(DWT)与奇异值分解(SVD)相结合的数字图像水印算法。该算法将原始图像作小波分解并将小波分解得到的低频子带进行分块，对每一块进行奇异值分解后，选取每块中最大的奇异值通过量化的方法嵌入经过Arnold置乱后水印信息。-A new wavelet transform based on discrete (DWT) and Singular Value Decomposition (SVD) combination of digital image watermarking algorithm. The algorithm for wavelet decomposition of the original image and wavelet decomposition low-frequency sub-band are divided into blocks, each a singular value decomposition, the selection of each block by the largest singular value methods to quantify Arnold scrambled after embedding the watermark . Platform: |
Size: 38912 |
Author:久久 |
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Description: 提出了一种基于离散小波变换的数字水印算法, 选择低频子带嵌入水印, 保证了水印的不可见性 -Proposed a number of discrete wavelet transform based watermarking algorithm, select the low frequency sub-band watermark to ensure the watermark invisibility Platform: |
Size: 401408 |
Author:陈万虹 |
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Description: 基于小波变换的零水印算法，包括水印的嵌入及提取，用到了阿诺德变换-Zero-watermarking algorithm based on wavelet transform, including the watermark embedding and extraction, use Arnold transformation Platform: |
Size: 3072 |
Author:傅新星 |
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Description: 基于相关理论的小波域数字盲水印算法,通过小波变换，将水印添加到图片中，介绍了盲水印的实现方法-Wavelet domain digital watermarking algorithm based on the theory, wavelet transform, add a watermark to the image, we introduce the implementation of watermarking Platform: |
Size: 309248 |
Author:刘晓萌 |
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Search - wavelet based watermarking algorithm