Description: 该程序是水印提取的简单例子,但可读性很强,适合初做水印和小波的朋友,-The watermark extraction procedure is a simple example, but it is eminently readable, so for the early watermark and wavelet friends, huh Platform: |
Size: 990 |
Author:yj |
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Description: 又一种实现数字水印的代码，希望喜欢，用到了DCT和小波变换-also a digital watermark code, like that used by DCT and wavelet transform Platform: |
Size: 49028 |
Author:刘贺 |
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Description: 基于小波变换的数字水印嵌入程序（将二值图像嵌入尺寸相同的灰度图象中）-based on wavelet transform digital watermark embedding process (will embed binary images the same size as the gray image) Platform: |
Size: 52072 |
Author:li yue |
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Description: 基于一级小波变换的将2值图像嵌入宿主图像低频子带的水印嵌入及提取算法-based on a wavelet transform the image of two images embedded host low-frequency band and the embedded watermark extraction algorithm Platform: |
Size: 58822 |
Author:li yue |
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Description: 将基于小波变换的嵌入水印后的宿主图像进行压缩处理再提取灰度水印。-will be based on the wavelet transform the embedded watermark image of the host compressed again from Gray watermark. Platform: |
Size: 162221 |
Author:li yue |
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Description: 将基于小波变换的水印嵌入后的宿主图像加噪处理再提取灰度水印。-will be based on the wavelet transform the watermark embedded in the host Image Noise from Gray again watermark. Platform: |
Size: 173027 |
Author:li yue |
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Description: 一种利用小波变换的水印算法，实现了盲检测，可以对抗常见的几何攻击。-a wavelet transform the watermark algorithm achieved a blind testing can be used to confront common geometric attacks. Platform: |
Size: 1386 |
Author:袭乐宣 |
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Description: 根据嵌入水印值改变直方图,图象经过小波变换后提取其中一个子带的直方图-under the embedded watermark values change histogram, image after wavelet transform from one of the histogram Subband Platform: |
Size: 1551 |
Author:刘德庆 |
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Description: 采样一幅图．利用小波变根据二进制数（水印）来改变图片，提取其中一个子带的直方图．-a sampling plan. Using wavelet based binary variable (Watermark) to change the picture, which extraction of a subband histogram. Platform: |
Size: 1601 |
Author:刘德庆 |
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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: 36294 |
Author:xxx |
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Description: 基于Contourlet变换的水印算法.与小波变换不同的是Contourlet变换采用类似于线段（contoursegment的基得到一种多分辨、局部化、方向性的图像表示。水印信号通过基于内容的乘性方案加载到Contourlet 变换系数。-on Contourlet Transform algorithms. And wavelet transform is different Contour let transformation similar to that segment (the base contoursegment be a multiresolution, Local, Image directional said. Watermark signal through content-based program by loading Contourlet Transform - few. Platform: |
Size: 708876 |
Author:阳光 |
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Description: 本文构造一种扩频和量化混合模型,并提出了一种图像多小波变换域内基于扩频和量化的混合数字水印方案,通过理论分析给出了扩频长度、信道容量、检测错误率等参数间的关系,实验结果表明算法实现了水印鲁棒性前提下的水印容量最大化的目的.-this paper, a spread spectrum and quantitative hybrid model, and proposes a number of images based on wavelet transform domain spread spectrum and quantification of mixed digital watermarking programs, Through theoretical analysis of the spread spectrum given length, channel capacity, the error rate testing parameters such as the relationship between them, Experimental results show that the watermark algorithm robust watermark under the premise of the purpose of maximizing capacity. Platform: |
Size: 469524 |
Author:阳光 |
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Description: 这是一篇应用二分树复数小波进行数字水印的一篇文章，希望与对二分树复数小波感兴趣的人一同切磋-This is the application of two hours a tree Complex Wavelet digital watermark an article, with the hope that the two sub-tree Complex Wavelet interested in the interaction together Platform: |
Size: 278965 |
Author:lily |
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Description: 一种新的图像脆弱水印算法李亚琴 ，孙星明 ，杨恒伏(1．苏州市职业大学，江苏苏州215104；2．湖南大学计算机与通信学院，湖南长沙410082)摘要：提出一种基于小波变换和QR分解的图像脆弱水即方法。嵌入水印时，首先对原始图像进行三级小波分解，然后提取第三级低频子带的边缘特征，同时对此边缘特征和第三级垂直高频子带进行QR分解，用边缘特征的一部分分解结果替换垂直高频子带分解结果的相应部位来嵌入水即，最后进行小波逆变换得到嵌入水印的图像。图像认证时，首先对观测图像进行三级小波分解，第三级垂直高频子带与低频子带边缘特征的QR分解结果进行比较，就可以准确认证图像是否经过攻击，并可以精确定位受攻击的部位。实验结果表明此方法的有效性和可行性。-a new image fragile watermarking algorithm Ya-Qin Li, Sun Xingming, Heng Yang Fu (1. Suzhou City Vocational University, Suzhou City in Jiangsu 215104; 2. Hunan University College of Computer and Communication, Changsha, Hunan 410082) Abstract : A wavelet transform based on QR decomposition and the image that the fragile water ways. Embedded watermark, the first of three original image wavelet decomposition, and then extract the third level sub-band edge features, Meanwhile this edge features and third-vertical high-frequency band for QR decomposition, Edge feature with the results of the replacement part of decomposition vertical high-frequency subband results to the corresponding parts of the water that is embedded. Finally inverse wavelet transform embedded watermark images. Image Authen Platform: |
Size: 231599 |
Author:ghostsx |
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Description: 彩色图像的篡改检测及自恢复算法赵春晖，孙建军，朱海峰(哈尔滨工程大学信息与通信工程学院，黑龙江哈尔滨150001)摘要：数字水印是图像认证的有效手段之一．利用小波变换提出一种计算简单的彩色图像水印算法，将一个图像的主要内容嵌入该图像自身之中，用均值量化的方法在亮度信号中嵌入水印，实现篡改检测和定位篡改区域；用多余的色度空间嵌入亮度信号和色度信号，用于恢复被篡改的图像内容．该算法可以获取较高的峰值信噪比，具有很好的鲁棒性．实验结果表明，该算法对删除、替换等恶意图像篡改具有良好的检测、定位和自修复能力．-color image tamper detection and self-recovery algorithm Zhao Chunhui, Sun Jianjun, Zhu Haifeng (Harbin Engineering University, Information and Communication Engineering Institute, Harbin, Heilongjiang 150001) Abstract : digital watermark image authentication is one of the effective means. Using wavelet transform A simple calculation of the color image watermarking algorithm, an image of the main elements embedded in the image itself, and use of quantitative methods mean the luminance signal embedded watermark, achieve tamper detection and localization tampering with the region; use of surplus space embedded color luminance signals and chrominance signals, for the restoration of tampering with the image content. The algorithm can generate a higher signal-to-noise ratio of the peak value, h Platform: |
Size: 238214 |
Author:ghostsx |
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