-
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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GLOBALIZACION_CALENTAMIENTO
Articulo del calentamiento global
- 2010-08-19 04:20:13下载
- 积分:1
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moving_object_detection
This code detects object in a Video and indicates its position in each time frame and keeps track of it.
The code is written in *.m format which is executable in MATLAB(This code detects object in a Video and indicates its position in each time frame and keeps track of it.
The code is written in*.m format which is executable in MATLAB)
- 2009-11-04 19:24:38下载
- 积分:1
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power-spectral-analys
随机信号功率谱分析
(1) 生成信号,被淹没在在噪声中;
(2) 试用周期图法估计信号的功率谱;
(3) 选用不同窗,使用修正周期图法估计信号的功率谱;
(4) 对一段语音信号,使用LD算法估计其功率谱;
(5) 详细列出功率谱估计的步骤和原理。
(power spectral analys)
- 2012-04-03 19:55:58下载
- 积分:1
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sa_Ex6_2
Matlab有关于天线结构设计的源代码分析,适用于RF的天线设计工程师(Matlab about the antenna structure design source code analysis for RF antenna design engineer)
- 2014-02-14 04:59:26下载
- 积分:1
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vcbffndh
matlab程序运行时导入数据文件作为输入参数,是路径规划的实用方法,用MATLAB实现的压缩传感,用于信号特征提取、信号消噪,多姿态,多角度,有不同光照,时间序列数据分析中的梅林变换工具。( Import data files as input parameters matlab program is running, Is a practical method of path planning, Using MATLAB compressed sensing, For feature extraction, signal de-noising, Much posture, multi-angle, have different light, Time series data analysis Mellin transform tool.)
- 2016-03-07 21:56:52下载
- 积分:1
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matlab
经典功率谱估计的MATLAB程序,需要的可以看看,验证过了(Classical power spectrum estimation of the MATLAB program, the need to look at, been verified)
- 2011-02-06 16:51:31下载
- 积分:1
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xiaobo1
主要通过小波算法,实现对信号的分析,然后通过信号重构,实现与原信号对比。(Wavelet analysis, signal reconstruction)
- 2014-08-28 21:33:49下载
- 积分:1
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rgb2hsi
convert rgb to hvi colors space
- 2012-01-30 14:14:01下载
- 积分:1
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book
说明: 美国著名教授agrawal写的非线性光学原理及应用,是一本很好的学习非线性光学的书籍,里面包含了中文和英文版本(Written by American professors agrawal nonlinear optics and applications, is a good learning books on nonlinear optics, which includes the Chinese and English version)
- 2011-03-30 21:54:34下载
- 积分:1