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 Platform: |
Size: 33792 |
Author:圣子到 |
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Description: 图像变换关于离散余炫域数字水印技术的相关程序欢迎下载-Image Transform on the discrete domain I Xuan digital watermarking technology related procedures welcome to download Platform: |
Size: 109568 |
Author:刘剑 |
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Description: 数字水印的嵌入和检测，dct，
作者Mao Li
Purpose:an algorithm to achieve the embeding watermarking to a image by
dct bloking and hvs,then detect the watermarking by comparability.
-digital watermark embedding and detection, Copy, the writer Mao Li Purpose : an algorithm to achieve the embeding watermark ing to a image by Extra bloking and hvs. then detect the watermarking by comparability . Platform: |
Size: 1024 |
Author:awen |
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Description: 一种基于视觉模型的DCT数字水印算法
提出了一种水印系统与人眼视觉模型相结合的离散余弦变换数字水印算法。该算法利用了人眼视觉模型
(Hvs)来选取水印嵌入区域，使其既能够保证水印信息的鲁棒性又能够满足其不可见性。利用基于能量关系的算法进
行水印嵌入。最后进行了仿真实验，嵌入水印的图像中很难发现水印的痕迹，具有较高的清晰度。-based on the visual model DCT digital watermarking algorithm presents a watermarking system and the human visual model Guitar with the discrete cosine transform digital watermarking algorithm. The algorithm uses the human visual model (Hvs) to select embedding region, it is to ensure watermark robustness is not able to meet its visibility. Based on the energy use of the embedded watermark algorithm. Finally, the simulation experiments, the embedded watermark image watermark is difficult to find traces of high clarity. Platform: |
Size: 716800 |
Author:ghostsx |
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Description: 图像数字水印的方案毕业论文，基于dct和dwt的算法，有详细程序。-digital watermark image of the program thesis, based on Extra dwt and the algorithm, a detailed procedure. Platform: |
Size: 1234944 |
Author:shen |
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Description: 基于DCT域的数字图像水印的处理，经测试可以达到对水印检测的功能-DCT-based digital watermark image processing, testing can be achieved by the right watermark detection function Platform: |
Size: 2048 |
Author:胡先生 |
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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 Platform: |
Size: 53248 |
Author:粘永健 |
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Description: 基于DCT域的数字水印的嵌入和提取，处理图像是BMP-DCT domain based on digital watermarking embedding and extraction, processing image is BMP Platform: |
Size: 4820992 |
Author:秋水飘零 |
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Description: 基于DCT域的图像数字水印技术：
摘要：数字水印技术作为数字媒体版权保护的有效办法，近年来在国内外引起了人们极大的兴趣。作者采用了DCT离散余弦变换的算法，对图像这种多媒体数字作品进行了数字水印的嵌入和检测研究。并且使用了高效实用的编程工具MATLAB来介绍了一种DCT域的图像数字水印嵌入和提取的实例，并且在最后对嵌入水印的图像进行了攻击实验，验证了该算法的鲁棒性和不可见性。-Based on the DCT domain image watermarking techniques: Abstract: Digital watermarking of digital media technology as an effective means of copyright protection, in recent years both at home and abroad has aroused great interest. The author adopted the DCT discrete cosine transform algorithms, the image of this multi-media digital works for the digital watermark embedding and detection research. And the use of efficient MATLAB programming tools useful to introduce a DCT domain image watermarking embedding and extraction examples, and in the final of the embedded watermark image of the attack experiments verify the robustness of the algorithm and non- Visibility. Platform: |
Size: 533504 |
Author:绯村剑心 |
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Description: 基于8*8分块的DCT域水印嵌入算法水印图像为64*64的，原始图像为256*256的，把原始图像变成64*1024的-Based on 8* 8 sub-block DCT domain watermark image watermark embedding algorithm is 64* 64, the original image is 256* 256, and the original image into 64* 1024 Platform: |
Size: 1024 |
Author:张婷婷 |
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Description: 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 Platform: |
Size: 1566720 |
Author:xaoi |
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Description: 彩色数字水印的程序，实现在彩色图像中通过DCT变换来嵌入水印信息-Color digital watermarking process to achieve the color image by DCT transform to embed watermarks Platform: |
Size: 425984 |
Author:马荣强 |
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Description: 主要研究了彩色图像数字水印算法，在DCT域进行了水印的自适应嵌入和提取，并用Matlab进行了仿真实验，测试算法的性能-The main color image watermarking algorithm in the DCT domain adaptive watermark embedding and extraction, and with the Matlab simulation experiment to test the performance of algorithm Platform: |
Size: 2409472 |
Author:卢雪宁 |
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Description: 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 Platform: |
Size: 988160 |
Author:Lnai |
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Description: 实现图片水印的嵌入和提取，并且做了些攻击测试(To achieve the image watermark embedding and extraction, and made some attack tests) Platform: |
Size: 870400 |
Author:五厘米的悲伤
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