Description: 本程序基于matlab开发环境，对数字水印进行8*8DCT变换，属于非盲数字水印！-Matlab-based development environment for this program, the digital watermark 8* 8DCT transform, a non-blind watermarking! Platform: |
Size: 1024 |
Author:李可维 |
Hits:
Description: 基于MATLAB的图像数字水印技术源代码，使用的是英文的解说，看懂应该没有什么问题,dct域和DTF域的-MATLAB-based image watermarking technology source code, using the English definition should read no problem, dct domain and domain DTF Platform: |
Size: 199680 |
Author:牛太清 |
Hits:
Description: 作为信息隐藏的重要分支，数字水印是一种有效的数字产品版权保护和数据安全维护技术。近年来数字水印技术成为了信息安全领域的研究热点，也得到了较大的发展。基于变换域的水印技术是目前研究的热点和重点。本文系统介绍了数字水印的原理和应用方法，概要介绍了数字水印的几种主流算法，并重点研究了一种基于离散余弦变换(DCT)数字图像水印算法，并借助 MATLAB编程工具，实现数字水印的嵌入和提取仿真，以及为测试鲁棒性而对水印图像进行攻击实验。-As an important branch of information hiding, digital watermarking is an effective copyright protection of digital products and data security maintenance technology. In recent years, digital watermarking has become a hot research field of information security, has also been considerable development. Transform domain watermarking technique based on the current research focus and focus. This system describes the principles and applications of digital watermarking methods, an overview of several mainstream digital watermarking algorithms, and focus on a discrete cosine transform (DCT) digital image watermarking, and with the MATLAB programming tools, digital watermark embedding and extraction simulation, as well as test the robustness of the watermark image on the attack experiments. Platform: |
Size: 2048 |
Author:yang cheng |
Hits:
Description: 一个用 MATLAB 编写的数字水印算法实例
基于DCT算法的数字水印的嵌入算法与提取-MATLAB prepared a digital watermarking algorithm based on DCT algorithm instance digital watermark embedding and extraction algorithms Platform: |
Size: 3072 |
Author:蓝冰 |
Hits:
Description: 通过matlab实现DCT域图像水印技术，内容详细，通俗易懂，可供大家使用，互相学习。-Through matlab DCT domain image watermarking technology, detailed, easy to understand, and available for everyone to use, learn from each other. Platform: |
Size: 115712 |
Author:辛力 |
Hits:
Description: 基于DCT和DWT的水印的嵌入与提取，以及鲁棒性的检测，攻击检测-Based on the DCT and DWT watermarking embedding and extraction, as well as the robustness of detection, attack detection Platform: |
Size: 1238016 |
Author:YJL |
Hits:
Description: 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 数字水印盲水印关系嵌入量化嵌入离散余弦变换离散小波变换
按这篇文章的算法，自己编的matlab,没有攻击时水印提取率为1，加水印后图像PSNR有45+，。有攻击后提取率也有0.9+。-Blind watermark extraction can be fulfilled without referring to the original host image. Therefore it hasmuch
prospective applications in the fields of information hiding and copyright protection. Based on blocking Discrete Cosine
Transform (DCT) and blocking DiscreteWaveletTransform (DWT), the proposed blind watermarking algorithm uses an
embedding strategy of adaptively selecting either relationship embedding or quantization embedding. The relationship em-
bedding comes from the observation thatboth themagnitudes of coefficients concerned in the relationship usually have thesame change trend when the image is attacked. This strategy remarkably improves the robustness ofwatermark extraction.In addition, dithermodulation is used in quantization embedding, bywhich the tradeoff between transparency and robus-tness ofwatermarking can be easily adjusted. Simulation results show that the algorithm is fairly robust against the attacks such as noise, filtering, compression, and contrast Platform: |
Size: 758784 |
Author:CXF |
Hits:
Description: 基于DCT数字水印算法的Matlab实现源代码,1. 将文字水印和图像水印转换为二值序列水印；
2. 对水印进行置乱，提高其安全性；
3. 选择合适大小的块，给出DCT域中频分块编码方案；-DCT-based digital watermarking algorithm Matlab source code, a text watermark and image watermark converted into a binary sequence watermark .. 2 watermark scrambling to improve their safety 3 Select the appropriate size of the block, given DCT domain frequency block coding scheme Platform: |
Size: 1024 |
Author:邢月月 |
Hits:
Description: 用MATLAB编写数字水印程序的主要优点是语言本身适合水印技术所需的大量的函数库。并且MATLAB本身具有可扩展性、易学易用性和高效性的优点。-The main advantages of MATLAB prepared by digital watermarking procedure is a function library of language itself suitable for watermarking technology required. And MATLAB itself is scalable, Yi Xueyi with the advantages and efficiency. Platform: |
Size: 4096 |
Author:张鹏飞 |
Hits:
Description: 基于dct的数字水印源程序，是matlab代码，并且带有解释信息-Dct-based digital watermarking source is matlab code, and with explanatory information Platform: |
Size: 191488 |
Author:程磊 |
Hits:
Description: 在频率域内对图像进行水印，使用DCT算法在MATLAB中实现。-a method of digital image watermarking in frequency domain using DCT algorithm in MATLAB Platform: |
Size: 1024 |
Author:郑慧敏 |
Hits:
Search - dct watermarking matlab