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CGHwatermarkmatlabcode
说明: 关于半色调编码计算全息图的信息隐藏Matlab程序的说明:
算法实现主程序为CGHwatermark;
位相恢复函数为phaseSL;
用计算全息记录已知振幅和位相的复波前函数为Hologen;
半色调编码函数为AMhalftone;
嵌入信息的提取直接调用Matlab自带的FFT2函数;
主程序的函数调用关系如下
读入宿主信息和水印信息-----------phaseSL--->Hologen--->AMhalftone(完成嵌入)--->FFT2(提取水印信息)
主程序结果保存于holo&mark文件夹
对算法鲁棒性测试的程序:
1. 对于剪切操作 Cliptest 结果存放于cliptest文件夹
2. 对于缩放操作 zoomtest 结果存放于zoomtest文件夹
3. 对于旋转操作 rotatetest 结果存放于rotate文件夹
4. 对于滤波操作 filtertest 结果存放于filtertest文件夹
5. 测试算法的时间效率 timetest
6. 分析嵌入信息后图像质量与参数alpha,tao的关系 msetest(err)
- 2008-09-09 10:14:23下载
- 积分:1
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Digital-Image-Watermarking
Smith Nguyen Studio. Smith Nguyen Studio. Smith Nguyen Studio. Smith Nguyen Studio. Smith Nguyen Studio.
- 2013-07-24 16:46:25下载
- 积分:1
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Paper-5
this is a very interesting paper, ple read it
, I will upload source code later. I am finding it in my computer
- 2012-11-16 11:05:08下载
- 积分:1
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Monte-Carlo
Monte Carlo方法的实质是通过大量随机试验,利用概率论解决问题的一种数值方法,基本思想是基于概率和体积间的相似性。它和Simulation有细微区别。单独的Simulation只是模拟一些随机的运动,其结果是不确定的;Monte Carlo在计算的中间过程中出现的数是随机的,但是它要解决的问题的结果却是确定的。(The essence of the Monte Carlo method is a numerical method to solve the problem through a large number of randomized trials, the use of probability theory, the basic idea is based on the similarity between the probability and volume. There are subtle differences between it and Simulation. Separate the Simulation simulation of random movement, the result is uncertain number of the Monte Carlo calculations in the middle of the process is random, but it is to solve the problem the result is determined.)
- 2012-05-12 22:18:55下载
- 积分:1
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intersections
This program computes the point locations where two curves intersect. The curves can be broken with NaNs or have vertical segments.
- 2011-06-20 16:44:29下载
- 积分:1
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QPSK
QPSK modulation with awgn channel
- 2013-12-08 22:27:12下载
- 积分:1
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AFD
光伏并网发电系统有源频率漂移孤岛检测法(AFD)(active frequency drift(AFD) island detection method of photovotaic grid-connected generation system)
- 2010-07-06 15:12:32下载
- 积分:1
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lorenz
Generate lorenz data. You can control the parameters and it may be useful for nonlinear analysis.
- 2011-09-09 12:08:10下载
- 积分:1
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PCA-SIFT
特征提取代码,提取pca_sift特征,用于图像特征提取,图像配准或匹配,可供做这方面研究的同学参考。(feature extraction image matching)
- 2013-05-08 21:34:40下载
- 积分:1
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TSPMatlab
TSP问题(货郎担问题,旅行商问题)的模拟退火算法通用malab源程序
f目标最优值,T最优路线,d距离矩阵,t0初始温度,tf结束温度
- 2010-08-20 21:32:42下载
- 积分:1