-
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
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3
说明： eeg data,i have processed the datas,you can easily use load to load and use the data
- 2010-05-24 16:05:33下载
- 积分：1
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MCMC-
欧式看涨亚式期权的马尔科夫链蒙特卡洛数值模拟算法(European call Asian Options Simulation Markov chain Monte Carlo algorithm)
- 2014-11-13 17:10:01下载
- 积分：1
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teager-and-lmd
用teager能量算子来解调出复杂信号的纯调频挑夫函数，用LMD来进行局部均值分解(Pure FM demodulated complex signal porters function with Teager energy operator, using LMD to carry out the local mean)
- 2016-09-01 08:46:20下载
- 积分：1
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fastlms
快速块LMS算法 利用FFT，实现频域的LMS快速算法，并且能够加快算法的收敛速度(Fast Block Least Mean Squares)
- 2020-07-04 12:40:02下载
- 积分：1
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3machines9bus
美国西部电网3机9节点系统的matlab模型(American Western Power 3 machine 9-bus system matlab model)
- 2021-04-07 10:39:01下载
- 积分：1
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juanjicode
卷积码编译码的快速实现算法，非常适合初学者迅速上手(Fast convolution code encoding and decoding algorithm is very suitable for beginners to get started quickly)
- 2014-02-17 19:50:33下载
- 积分：1
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mvdr_5141040
最坏情况鲁棒自适应波束形成优化。实际应用中,由于阵元位置的细微偏差、阵元之间的幅度相位响应也不可能完全相同、以及有限采样效应等因素,使得实际的方向矢量与其理想值之间存在误差,严重影响了波束的性能。针对这一问题，论文作者在最坏情况下自适应波束形成方法进行研究，并作比较。(Worst case robust adaptive beamforming optimization. In practical applications, the errors between the actual direction vector and its ideal value are caused by the slight deviation of the element position, the impossibility of identical amplitude and phase responses between the elements, and the limited sampling effect, which seriously affects the performance of the beam. In order to solve this problem, the author of this paper studies and compares the adaptive beamforming methods in the worst case.)
- 2021-01-04 17:38:55下载
- 积分：1
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code
it contains matlab code for ofdm systems it is .m file extension
- 2010-03-12 09:25:56下载
- 积分：1
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ThreePhaseSPWM
三相DC-AC逆变器的谐波注入SPWM调制技术
性能指标：直流输入350~640V，三相交流输出线电压220V AC，输出功率5kVA，功率因数0.8，输出频率50Hz。(Harmonic Injection SPWM Modulation Technology for Three-phase DC-AC Inverter
Performance indicators: DC input 350 ~ 640V, three-phase AC output line voltage 220V AC, output power 5KA, power factor 0.8, output frequency 50Hz.)
- 2019-05-19 16:28:48下载
- 积分：1
