Description: 基于小波变换和混沌映射的多功能图像水印算法，完成的图像数字水印加密-based on wavelet transform and the chaotic map multifunctional image watermarking algorithm to complete the digital watermark image encryption Platform: |
Size: 36294 |
Author:xxx |
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Description: 基于小波变换和混沌映射的多功能图像水印算法，完成的图像数字水印加密-based on wavelet transform and the chaotic map multifunctional image watermarking algorithm to complete the digital watermark image encryption Platform: |
Size: 35840 |
Author:xxx |
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Description: 数字水印具有很大参考价值的文章 基于DCT变换、分块DCT混沌脆弱水印、自嵌入水印、图像篡改定位及恢复的脆弱水印等15篇最新水印技术文章-Digital Watermarking of great reference value to the article based on the DCT transform, DCT block chaotic fragile watermarking, since the embedded watermark, image tampering localization and recovery fragile watermarking, such as the latest 15 articles watermarking technology Platform: |
Size: 6259712 |
Author:zhangyiyi |
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Description: 利用同一密钥的混沌序列对经过置乱的水印信息实现双重加密，考虑小波变换的能量分布问题，把水印信息嵌入低频系数中，确保水印信息的可靠性。提取时利用图像复原方法实现盲检测。-Using the same key after a chaotic sequence of scrambling the watermark information to achieve the double encryption, consider the wavelet energy distribution problem, the watermark information embedded in low-frequency coefficients to ensure the reliability of watermark information. Extracted using image restoration method to achieve blind detection. Platform: |
Size: 625664 |
Author:王宇 |
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Description: 水印添加函数库水印嵌入函数水印检测函数可能比较乱请自己整理下-Add a watermark embedding function library watermark detection function may be more chaotic, under your own finishing Platform: |
Size: 2048 |
Author:zhangxiaoyu |
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Description: 本网站上下载的混沌加密的m代码，通过logistic映射生成了混沌序列并调制，实现了对水印信息的预处理。-The website of the chaotic encryption of m code, through the logistic chaotic sequence generated mapping and modulation to achieve a pre-processing of watermark information. Platform: |
Size: 48128 |
Author:xiaobao89 |
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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: 摘 要: 提出了一种基于医学图像中感兴趣区域(ROI)的盲检测水印算法, 将包含重要病理信息的灰度图像作为数字水印, 经置乱后在混沌序列的控制下嵌入到宿主小波域非感兴趣区域中。实验结果表明, 该算法在保护医学 ROI 的同时提高了水印抗 JPEG 压缩的鲁棒性, 并对篡改、 几何剪切、 滤波等均具有良好的鲁棒性和透明性, 而且混沌序列增强了系统的安全性。-Abstract: This paper presents a region of interest based on medical images (ROI) of the blind detection watermarking algorithm will contain important pathological information of gray image as digital watermark, after scrambling after the chaotic sequence embedded into the host under the control of wavelet-domain Non-interest area. The experimental results show that the algorithm in the protection of medical ROI while increasing watermark robustness against JPEG compression, and tampering, cropping, filtering Dengjun has good robustness and transparency, but also enhanced the system chaotic sequence security. Platform: |
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Author:还都 |
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Description: 笨算法主要是基于混沌序列的图像加密，通过产生随机序列，产生加了水印的图像-Stupid algorithm is mainly based on chaotic sequence encryption, by generating random sequence, resulting in increase of the watermark image Platform: |
Size: 108544 |
Author:韩小芳 |
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Description: 实现基于小波变换数字水印的嵌入和提取,并实现对压缩，噪声等攻击的检测。-Using the same key after a chaotic sequence of scrambling the watermark information to achieve the double encryption, consider the wavelet energy distribution problem, the watermark information embedded in low-frequency coefficients to ensure the reliability of watermark information. Extracted using image restoration method to achieve blind detection. Platform: |
Size: 868352 |
Author:飞无影 |
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Description: 经过置乱变换的水印再用混沌技术进行加密,在密钥未知的前提下,非授权者无法获取嵌入的数字水印,从而提高了水印系统的安全性-After scrambling transformation chaotic watermarking technology and then encrypted in the key premise of the unknown, unauthorized persons can not obtain the embedded watermark, so as to enhance the security of the watermarking system Platform: |
Size: 5120 |
Author:朱晓峰 |
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Description: 基于DCT域音频水印完整源代码，包括水印图像的预处理（二维二值图像Arnold变换、混沌加密、降维），水印的嵌入提取以及检测，信噪比和相似性系数。-Based on the the DCT domain audio watermarking complete source code, including the watermark image preprocessing (two-dimensional binary images Arnold transform chaotic encryption, dimensionality reduction), the embedded watermark extraction and detection, signal-to-noise ratio and similarity coefficient. Platform: |
Size: 21720064 |
Author:zhangmingyang |
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Description: 基于DCT域的数字水印算法主要包括水印调制、水印嵌入和水印提取，首先在嵌入载体图像之前用Logistic混沌序列对水印进行调制，得到一个只有+1和-1随机序列的水印，同时将载体图像进行全局DCT变换，然后将水印图像嵌入人类视觉系统最重要的部分，即DCT最大的系数，DC（Direct Current）部分也包含在这最大的系数中，这部分的系数满足人类视觉特性，会使水印嵌入的性能更好。嵌入算法是将水印与这些系数进行相乘获得新的系数，再用新的系数来替换原来的系数，即获得嵌入水印后的离散余弦域的图像，然后对这个变换后的图像进行IDCT，就会得到需要的水印图像。-While the carrier image digital watermarking algorithm based on DCT domain include watermark modulation, watermark embedding and watermark extraction, the first of the watermark embedded in a carrier modulated image before using Logistic chaotic sequence, only+1 and-1 to get a random sequence of watermark, Global DCT transform, then the watermark image is embedded most important part of the human visual system, i.e. the largest DCT coefficients, DC (Direct Current) in this section also contains the largest coefficient, the coefficient of this part of the human visual characteristics to meet, make watermarks Embed better performance. The watermark embedding algorithm is with these coefficients are multiplied to obtain new coefficients, and then a new factor to replace the original coefficients, namely discrete cosine domain to obtain an image watermarked and then transformed the image of this conduct IDCT, on watermark image will be needed. Platform: |
Size: 4096 |
Author:kelly |
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Description: 本文件实现的是对水印的加密及解密，有3种方式，猫脸变换，混沌置乱和zigzag置乱。-The file contains sseveral functions, which can encrypt and decrypt the watermark,including Arnold Transform,chaotic and zigzag. Platform: |
Size: 78848 |
Author:张志 |
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