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MyPaper
its a paper about compression
- 2010-06-03 04:10:48下载
- 积分:1
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Rossler
Lyapunov指数程序。适合初学者,可以直接通过替换方程,来进行计算。清晰实用。
(Lyapunov index procedure. For beginners, you can directly replace the equation to calculate. Clear and practical.)
- 2014-10-14 15:30:59下载
- 积分:1
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interpolate
mimo-ofdm系统中导频间的信道差值算法代码(mimo-ofdm system guide channel frequency difference between the algorithm code)
- 2013-12-04 17:08:34下载
- 积分:1
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filterdesign
用matlab构造滤波器,非常有用。用matlab构造等波纹滤波器(Matlab filter structure with very useful)
- 2010-10-07 14:37:23下载
- 积分:1
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Matlab-cmds
Matlab常用函数简介,包括一些通用命令,基本运算,编程语言结构(Introduction of some Matlab commands)
- 2011-01-24 15:15:20下载
- 积分:1
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convexprog
primary dual 算法 解决Interior point(primary dual algorithm to solve Interior point)
- 2008-08-10 11:56:47下载
- 积分:1
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zishiyinglvbo
matlab自适应滤波器实现。性能比较:估计值与真实值之差
(matlab adaptive filter implementation. Performance comparison: estimated value and the true value of the difference)
- 2013-07-11 20:19:18下载
- 积分:1
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Porous
The Open Porous Medium (OPM) consortium provides industry-compatible open-source finite-element flow simulation code with robust
- 2014-01-26 18:28:03下载
- 积分:1
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ViterbiDetector_Main
Viterbi (MLSE) algorithm for signal detection in ISI channel by Matlab Code
- 2015-06-07 14:31:04下载
- 积分:1
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dct
M=512 原图像长度
N=64
K=8
I=zeros(M,M)
J=zeros(N,N)
BLOCK=zeros(K,K)
显示原图像
I=imread( f:ceshiyuanshitu.bmp )
figure
imshow(I)
xlabel( 原始图像 )
显示水印图像
J=imread( f:ceshilogistic_nuaa64.bmp )
figure
imshow(J)
xlabel( 水印图像 )
嵌入水印
tem=1
for p=1:N
for q=1:N
x=(p-1)*K+1
y=(q-1)*K+1
BLOCK=I(x:x+K-1,y:y+K-1)
BLOCK=dct2(BLOCK)
if J(p,q)==0
a=-1
else
a=1
end
BLOCK(2,1)=BLOCK(2,1)*(1+a*0.01)
BLOCK=idct2(BLOCK)
I(x:x+K-1,y:y+K-1)=BLOCK
end
end
显示嵌入水印后的图像
figure
imshow(I)
xlabel( 嵌入水印后的图像 )
imwrite(I, f:ceshiembedded.bmp )
- 2010-06-13 18:43:39下载
- 积分:1