Description: 一种基于感知模型的盲水印算法 ：根据Watson模型，结合仿射变换置乱技术和DCT量化系数奇偶特性，本文提出了一种在分块DCT中频交流系数中嵌
入有含义二值水印图像，以实现盲检测的水印方案。实验结果表明，该算法对于JPEG有损压缩、图像剪切等处理有很强的
鲁棒性。-a model based on the perception of the blind watermarking algorithm : According to Watson model, with affine transformation Scrambling Technology and DCT coefficient quantization Parity characteristics, This paper presents a block in exchange DCT coefficient meaning embedded in a binary image watermarking, Blind to achieve the watermark detection program. Experimental results show that the algorithm for JPEG lossy compression, image processing shear is very robust. Platform: |
Size: 225358 |
Author:ghostsx |
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Description: 该程序用于实现h.264中的DCT变换、量化、反DCT变换、反量化 采用了h.264白皮书中介绍的算法-the procedures used to achieve h.264 of DCT, quantization, anti- DCT, quantization using the anti-h.264 White Paper introduced by the algorithm Platform: |
Size: 10240 |
Author:王全明 |
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Description: 一种基于感知模型的盲水印算法 ：根据Watson模型，结合仿射变换置乱技术和DCT量化系数奇偶特性，本文提出了一种在分块DCT中频交流系数中嵌
入有含义二值水印图像，以实现盲检测的水印方案。实验结果表明，该算法对于JPEG有损压缩、图像剪切等处理有很强的
鲁棒性。-a model based on the perception of the blind watermarking algorithm : According to Watson model, with affine transformation Scrambling Technology and DCT coefficient quantization Parity characteristics, This paper presents a block in exchange DCT coefficient meaning embedded in a binary image watermarking, Blind to achieve the watermark detection program. Experimental results show that the algorithm for JPEG lossy compression, image processing shear is very robust. Platform: |
Size: 225280 |
Author:ghostsx |
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Description: 介绍了数字水印技术的发展，现状和对一些关键数字水印方法的介绍，包括基于格矢量量化的数字水印算法等。-Introduced digital watermarking technology, the status quo and some of the key digital watermarking methods, including lattice-based vector quantization of digital watermarking algorithm. Platform: |
Size: 1577984 |
Author:lulu |
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Description: matlab编的基于图像矢量量化的水印程序，用分割码本的办法嵌入水印！-matlab for image vector quantization-based watermarking process, with the approach of the division of code embedded watermark! Platform: |
Size: 2048 |
Author:周赟 |
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Description: 量化算法是数字水印技术嵌入算法的重要组成部分。通过修改数字图像的低频系数将所需嵌入的水印信息嵌入到载体图像中-Quantization Watermarking embedding algorithm is an important part. Digital image by modifying the frequency coefficients will be required to embed the watermark information is embedded into the carrier image Platform: |
Size: 1024 |
Author:舒旭 |
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Description: 基于邻域均值关系的Contourlet 域量化水印算法-Quantization watermarking scheme based on neighboring mean value relation in Contourlet transform domain. Platform: |
Size: 556032 |
Author:xiaozhang |
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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 |
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Description: 实现了基于小波变换的数字水印算法，包括小波变换，量化，分块等。具有很好的鲁棒性-Realization of the digital watermarking algorithm based on wavelet transform, including wavelet transform, quantization, block and the like. Having a good robustness Platform: |
Size: 43008 |
Author:杜鹏 |
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Search - Quantization watermarking