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criptografia_visual

于 2009-05-23 发布 文件大小:3KB
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下载积分: 1 下载次数: 153

代码说明:

  this is a matlab code of the method of visual cryptography based in the shadows method of Visual Cryptography, Moni Naor, Adi Shamir.

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  • ControlPanel
    上传的都是一些没有完成的小程序,希望大家帮帮忙,小女子这厢有礼了(I m a new student)
    2010-01-11 09:32:06下载
    积分:1
  • Canon
    用MATLB演奏《卡农》的程序源码设计,可用类似方法编写其他歌曲(" Canon" played with MATLB program source design, can be written in a similar way to other songs)
    2013-04-08 09:50:49下载
    积分:1
  • 3423421342
    马尔可夫的pdf资料,讲解详细。资源不错。希望大家和我一样能有所收获。(Markov pdf data, explain in detail. Good resources. I hope you like me can be harvested.)
    2014-01-04 14:27:52下载
    积分:1
  • HumanDetection
    this describes how we can use Matlab for Human detection in a Video.
    2010-08-30 21:45:34下载
    积分:1
  • OFDM-simulation-in-matlab
    本文详尽阐述了如何在matlab环境下进行MIMO ofdm编程。符合国际标准(This paper elaborates how the MIMO ofdm matlab programming environment. Compliance with international standards)
    2011-01-23 10:41:56下载
    积分:1
  • a1
    说明:  svd matlab code helps alot for the begginers
    2013-11-19 03:06:23下载
    积分:1
  • tuxiangxingtaifenge
    该程序是MATLAB源程序,可以用来对纹理图像进行分割。(MATLAB source code of the procedure can be used for texture image segmentation.)
    2009-05-09 20:49:26下载
    积分:1
  • Helmholtz-MATLAB
    说明:  分析亥姆霍兹线圈轴线磁场分布现象的数学模型基础上, 运用MATLAB对亥姆霍兹线圈轴线磁场均匀分布进行验证及仿真的方法。(Axis Helmholtz coil magnetic field distribution of the mathematical model of the phenomenon, based on the use of MATLAB on the axis of the Helmholtz coil magnetic field uniform method of verification and simulation.)
    2011-03-08 10:17:11下载
    积分:1
  • 3-Chanel-mimo
    xin chao cac ban dung tai file nay vi khong duoc gi
    2011-05-29 12:44:47下载
    积分:1
  • fangzhen
    实验一 双极性矩形随机信号的归一化功率谱密度一 1.1 功率谱密度简介 平稳过程的任何一个非零样本函数的持续时间为无限长,显然都不满足绝对可积和总能量有限的条件。因此,它的傅里叶变换不存在即没有频谱函数。所以我们用功率谱密度来表述其频谱特性。 随机过程的任一实现是一个确定的功率型信号。而对于任意的确定功率信号f(t),它的功率谱密度为: 式中, 是f(t)的截短函数 对应的频谱函数。f(t)是平稳随机过程 的一个实现。而随机过程某一个实现的功率谱密度不能作为过程的功率谱密度。过程的功率谱密度应该看作是任一实现的功率谱密度的统计平均,即 虽然该式给出了平稳随机过程的功率谱密度,但我们通常都不利用这个式子来计算功率谱。我们知道,确知的非周期功率信号的自相关函数与功率谱密度是一对傅里叶变换。对于平稳随机过程,也有类似的关系,即 和 对于平稳随机过程我们通常先求出其自相关函数再利用上式求出其功率谱密度。 1.2 实验要求  1.了解平稳随机信号功率谱的概念及计算方法  2.仿真不同占空比,等概、非等概双极性矩形随机信号的归一化功率谱密度  3.分析不同信号所包含的频谱分量,有无直流分量和定时分量信息 (A pair of rectangular random experiment polarity signal sample return a nonzero function of any duration power spectral density of a 1.1 power spectral density of a stationary process Introduction of infinite length, apparently not satisfied absolutely integrable and the total energy of the limited conditions. Therefore, it is the Fourier transform of the spectrum that does not function does not exist. Therefore, we use the power spectral density to express their spectral characteristics. Any random process is a realization of a certain type signal power. For arbitrarily determined power signal f (t), its power spectral density is: wherein, is f (t) is a function corresponding to the truncated spectrum function. f (t) is a stationary random process of realization. The random process to achieve a certain power spectral density can not serve as the power spectral density of the process. Power spectral density process should be seen as a statistical average power spectral density of any r)
    2014-11-30 20:39:29下载
    积分:1
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