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dsakf
% 文件名:randlsbget.m
% 程序员:余波
% 编写时间:2007.6.25
% 函数功能: 本函数将完成提取隐秘于上的秘密信息
% 输入格式举例:result=( scover.jpg ,56, secret.txt ,2001)
% 参数说明:
% output是信息隐藏后的图象
% len_total是秘密信息的长度
% goalfile是提取出的秘密信息文件
% key是随机间隔函数的密钥
% result是提取的信息
function result=randlsbget(output,len_total,goalfile,key)
ste_cover=imread(output)
ste_cover=double(ste_cover)
% 判断嵌入信息量是否过大
[m,n]=size(ste_cover)
frr=fopen(goalfile, a )
% p作为信息嵌入位计数器将信息序列写回文本文件
p=1
% 调用随机间隔函数选取像素点
[row,col]=randinterval(ste_cover,len_toal,key)
for i=:len_toal
if bitand(ste_cover(row(i),col(i)),1)==1
fwrite(frr,1, bit1 )
result(p,1)
else
fwrite(frr,0, bit1 )
result(p,1)=0
end
if p==len_total
break
end
p=p+1
end
fclose(frr)
()
- 2007-06-28 16:08:04下载
- 积分:1
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matlab
the code of the book come form the book of marlix laboratory with the book of singal
(the code of the book come form the book of marlix laboratory with the book of singal)
- 2008-01-16 12:53:20下载
- 积分:1
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ica_ng
说明: 盲信号分离中性能评价的串音误差分析的MATLAB程序(Performance Evaluation of blind signal separation in crosstalk error analysis of MATLAB program)
- 2010-04-30 00:10:14下载
- 积分:1
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ofdm2
在qpsk调制下实现ofdm的仿真 信道是高斯信道(qpsk ofdm awgn)
- 2011-05-05 16:00:09下载
- 积分:1
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funfui
利用自然梯度算法,ML法能够很好的估计信号的信噪比,考虑雨衰 阴影 和多径影响。( Use of natural gradient algorithm, ML estimation method can be a good signal to noise ratio, Consider shadow rain attenuation and multipath effect.)
- 2016-05-25 11:01:44下载
- 积分:1
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LeastSignificantBit_Embed_Program
说明: DCT域的嵌入程序,可以获得较高的鲁棒性,且嵌入秘密信息后的不可感知性也很好。(DCT embedded procedures, get higher robustness, and secret information embedded in the perception is also not very good.)
- 2006-03-22 12:54:03下载
- 积分:1
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emd
这是一个EMD分解程序,matlab运行的环境,只要导入数据,肯定可以运行(This is an EMD decomposition process, as long as the import data, they can definitely run)
- 2013-04-16 21:32:46下载
- 积分:1
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AlgebraMATLA
英文书籍,主要介绍了线性代数和矩阵论的matlab编程,适合于理工科学生使用(this book is to present an introdction about the linear algebra for engineers with MATLA)
- 2015-03-12 20:41:57下载
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MS_student_m
说明: 最小二乘法仿真,系统辨识算法,经典数学算法(Least squares simulation)
- 2019-03-21 13:55:23下载
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ECGmatematica.mat
ECG on mathematical test taken on 250 Hz (sampling frequency) You can use in order to obtain (and compare) the stress (from HRV)
- 2013-08-22 00:32:28下载
- 积分:1