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dwprotected
Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document.
A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.
- 2009-07-13 12:14:31下载
- 积分:1
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matlabbook1
与matlab有关的,非常实用的一些网页(with the Matlab, some very useful website)
- 2006-11-27 15:29:24下载
- 积分:1
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project_effect1
用来评估信号去噪的效果,采用模拟评估法,matlab程序(Used to assess the effects of signal de-noising, analog Assessment Act, matlab program)
- 2013-03-25 00:44:44下载
- 积分:1
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glGUIrel9a
一套跨平台的GUI库,可以自己进行扩展。(a cross-platform GUI library that their expansion.)
- 2005-01-12 13:26:46下载
- 积分:1
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WritingFastMATLABCod
说明: 由于matlab代码中若有很多循环结构,执行效率就会降低。本文献教你怎么写出高质量的matlab代码(Because if many matlab code cycle structure, the implementation of the efficiency is reduced. The literature teach you how to write high-quality matlab code)
- 2008-12-06 14:15:34下载
- 积分:1
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s变换
说明: S变换源码,附带详细的英文注释,可直接调用函数进行变换(S-Transform function with some examples)
- 2020-11-21 13:36:49下载
- 积分:1
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Channel
多径信道误码率计算,有相位和幅度的图像显示。(Multi-path channel bit error rate calculation, has phase and amplitude of the image display.)
- 2008-06-03 02:19:44下载
- 积分:1
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MATLAB
BPAM,BQAM for Matlab simulink
- 2010-02-11 22:36:13下载
- 积分:1
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Untitled
说明: 利用MATLAB语言来实现Levinson-Durbin递推算法,并估计AR模型参数,从而对正弦信号加白噪声进行功率谱估计。(Using MATLAB language to implement Levinson-Durbin recursive algorithm, and estimate the AR model parameters, thus sinusoidal signal plus white noise power spectrum estimation.)
- 2011-04-01 13:42:18下载
- 积分:1
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Matlab-programming-language
这本电子书用来学习如何用Matlab来编程序和绘制图形(This ebook used to learn how to Matlab to programming and drawings)
- 2012-06-25 21:45:24下载
- 积分:1