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dcthide
dct隐写技术matlab实现资料。算法原理:通过在一个图像块中调整两个DCT系数的相对大小,隐藏秘密信息。
将载体图像分为8×8的块,做二维DCT变换
用来表示选中的两个系数的坐标对于第i bit秘密信息
if(要隐藏信息‘1’)
make
else
make
逆DCT变换,还原图像
(dct steganography matlab implementation information. Algorithm principle: an image block by adjusting the relative size of the two DCT coefficients, hidden secret information. The vector image is divided into 88 blocks, making two-dimensional DCT transform coefficients used to represent the coordinates of the selected two for the first i bit secret information if (to hide information ' 1 ' ) make else make the inverse DCT, restore image)
- 2013-11-01 19:47:13下载
- 积分:1
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SA
说明: 最简单的模拟退火算法,自己编的小程序,用于优化问题,求全局最小值。(simmulated annealing (SA))
- 2015-01-09 21:03:39下载
- 积分:1
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fenceng
对小波信号进行去噪处理,主要采用分层重构,软硬阀值的方法进行仿真。(To deal with the noise of the wavelet signal, mainly adopts hierarchical reconstruction, hard and soft threshold method are simulated.
)
- 2015-06-13 22:10:58下载
- 积分:1
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matlabflow
use fir load flow in any buss system
- 2010-12-18 07:51:25下载
- 积分:1
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QMF_filter_bank_design_employing_Johnston_coeffs
This is a code to design and simulate the QMF filter banks.
- 2009-06-23 01:46:53下载
- 积分:1
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upfc_power_flow
说明: 在极坐标下计算电力系统网络潮流以及加设FACTS(UPFC)原件后的潮流调整(Calculated in polar coordinates, and the trend of power system network to install FACTS (UPFC) original trend after adjustment)
- 2011-04-15 22:24:47下载
- 积分:1
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NMO
说明: 地震勘探动校正程序,地震勘探中的常规处理(NMO code for seismic exploration, conventional processing in seismic exploration.)
- 2019-06-22 18:22:44下载
- 积分:1
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MITPMATLAB
麻省理工学院的matlab教程,应该很给力吧,还比较详细(MIT matlab tutorial, it should be to force it, but also more detailed)
- 2011-06-09 22:29:04下载
- 积分:1
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BARKER
产生雷达发射信号,相位编码采用巴克码,画出其调制信号的时域图和频谱图(barker code of radar .
draw the graphic in time domain.
draw the graphic in frequency domain.)
- 2015-05-25 20:12:10下载
- 积分:1
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matlab
有关MATLAB的图像绘制功能的ppt,很方便,很实用的(The MATLAB' s image rendering capabilities of the ppt, very convenient and very practical)
- 2010-06-07 15:30:01下载
- 积分:1