Description: Firstly, research on robust image watermarking. A digital watermarking scheme based on wavelet transform was proposed. It realizes the watermarking extract without the original image using 64×64×8 bit gray image as the watermark signal. In order to enhancing the security of the watermark, we employ an encryption technology based on chaos and bit plan. Simulation results show that our scheme have good invisibility and can survive low-quality JPEG compression, median filtering and so on. In addition, the analysis of the extracted watermark can help us to detect and localize tampers. Platform: |
Size: 102725 |
Author:xiaxianming |
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Description: 水印技术由于水印提取函数chaosdetect是水印嵌入
函数逆过程,编程思想非常相似,-watermarking technology as watermark extraction function is chaosdetect watermark embedding process inverse function, programming ideas are very similar, Platform: |
Size: 1024 |
Author:唐糖堂 |
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Description: 一个基于奇异值分解的数字水印源代码，其中可以实现混沌之乱和奇异之分解的数字水印嵌入
-A singular value decomposition-based Digital Watermarking source code, which can be achieved Chaos chaos and singular decomposition of the digital watermark embedded Platform: |
Size: 82944 |
Author:anlang |
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Description: 一种基于分块 D C T的混沌半脆弱图像水印技术，半脆弱数字水印；混沌理论 -DCT block based on chaotic semi-fragile image watermarking technology, semi-fragile digital watermarking Chaos Theory Platform: |
Size: 335872 |
Author:陈彩琼 |
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Description: Firstly, research on robust image watermarking. A digital watermarking scheme based on wavelet transform was proposed. It realizes the watermarking extract without the original image using 64×64×8 bit gray image as the watermark signal. In order to enhancing the security of the watermark, we employ an encryption technology based on chaos and bit plan. Simulation results show that our scheme have good invisibility and can survive low-quality JPEG compression, median filtering and so on. In addition, the analysis of the extracted watermark can help us to detect and localize tampers.-Firstly, research on robust image watermarking. A digital watermarking scheme based on wavelet transform was proposed. It realizes the watermarking extract without the original image using 64 × 64 × 8 bit gray image as the watermark signal. In order to enhancing the security of the watermark, we employ an encryption technology based on chaos and bit plan. Simulation results show that our scheme have good invisibility and can survive low-quality JPEG compression, median filtering and so on. In addition, the analysis of the extracted watermark can help us to detect and localize tampers. Platform: |
Size: 102400 |
Author:xiaxianming |
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Description: 本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。将经过二维混沌映射置乱后的数字水印信号嵌入图像小波域的低频系数，实现了数字水印的隐蔽性、保密性和稳固性；利用二维混沌映射Arnold变换对水印信号进行置乱，不仅增强了水印信号保密性，同时有效提高了视觉上抵抗图像剪切攻击的能力。-In this paper, two-dimensional chaotic map based on digital image watermarking algorithm, Chaos with random noise and the likelihood of extreme sensitivity to initial conditions and so on. Two-dimensional chaotic map will be scrambling after the digital watermark embedded image signal of the low-frequency coefficients in wavelet domain, the realization of a digital watermark hidden, security and stability the use of two-dimensional chaotic map on Arnold transform scrambling watermark signal, not only enhances the confidentiality of the watermark signal at the same time improve the visual image shear resistance attacks. Platform: |
Size: 668672 |
Author:lafeng |
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Description: 文章展示了一种新的方法用于功率系统中短期负载预测。提出的方案使用混沌时间序列分析基于确定性混沌去捕捉复杂的负载行为特征。确定性的混沌允许我们重构一个时间序列并决定输入的变量个数。这篇文章描述了混沌时间序列对日间功率系统峰值的分析。确定性混沌的非线性图形通过多层感知器的神经网络得到。提出的方案在一个例子中具体阐述。-This paper presents a new approach to short-term load forecasting in power systems. The proposed method makes use of chaos time series analysis that is based on deterministic chaos to capture characteristics of complicated load behavior. Deterministic chaos allows us to reconstruct a time series and determine the number of input variables. This paper describes chaos time series analysis of daily power system peak loads. The nonlinear
mapping of deterministic chaos is identified by the multilayer perceptron of an artificial neural network. The proposed approach is demonstrated in an example. Platform: |
Size: 382976 |
Author:will |
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Description: 本文提出了基于二维混沌映射的数字图像水印算法，混沌具有随机性、似噪声及对初始条件的极端敏感性等特点。-In this paper, two-dimensional chaotic map based on digital image watermarking algorithm, Chaos is random, like noise and extreme sensitivity to initial conditions and so on. Platform: |
Size: 665600 |
Author:陈万虹 |
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Description: 基于混沌理论和量化方法实现一种针对灰度图像的鲁棒水印算法。-Based on chaos theory and quantitative methods to achieve a robust watermarking algorithm for grayscale images. Platform: |
Size: 854016 |
Author:刘辉 |
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Description: 基于混沌理论和量化方法实现一种针对灰度图像的鲁棒和脆弱相结合的双重水印算法。-Double watermarking algorithm based on chaos theory and quantitative methods to achieve a combination of robust and fragile phase of the gray-scale image. Platform: |
Size: 1033216 |
Author:刘辉 |
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Description: 各种视频水印技术的总结,包括小波变换，DCT变换，混沌算法等。-Summary of the various video watermarking technology, including wavelet transform, DCT, chaos algorithm. Platform: |
Size: 1129472 |
Author:简捷 |
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Description: 一篇讨论各种加密算法的论文，着重运行了猫脸变换，混沌学加密和水印算法，原创有图有程序。-A discussion of various encryption algorithms papers, focusing running cat face transformation, Chaos encryption and watermarking algorithm, the original map with the program. Platform: |
Size: 4681728 |
Author:周煜 |
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Description: 基于互功率谱的时延估计，混沌的判断指标Lyapunov指数计算,实现了图像的加水印，去噪，加噪声等功能。- Based on the time delay estimation of power spectrum, Chaos indicator for Lyapunov index calculation, Realize image watermarking, de-noising, plus noise and other functions. Platform: |
Size: 4096 |
Author:孙建建 |
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Description: The use of chaos in signal processing and telecommunication
in the last few years originates several results,
especially in spread spectrum system, cryptography and watermarking.
The aim of this paper is to exploit the features Platform: |
Size: 3266560 |
Author:feltekh |
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Search - chaos watermarking